Spring Loaded
Contact Pins
CNCPioneer is a precision spring loaded contact pins manufacturer delivering high-reliability spring loaded electrical contact components with tolerances as tight as ±0.003mm — 78+ Swiss CNC lathes, 66+ MAZAK mill-turn centers, gold, rhodium, silver, and palladium plating, wearable charging contacts through heavy industrial power spring contacts.
What Are Spring
Loaded Contact Pins?
Spring loaded contact pins — also known as pogo pins, spring probe pins, or spring contact pins — are precision-machined electromechanical components that establish temporary, repeatable electrical connections through a spring-actuated plunger mechanism. A spring loaded contact pin consists of three elements: the plunger (moving contact element), the barrel (cylindrical housing), and the compression spring (maintaining consistent contact pressure across a defined compression range).
Spring loaded electrical contact pins maintain consistent, controlled contact force over a defined compression range regardless of mechanical tolerances, thermal expansion differences, or dimensional variation in the mating assembly. This compliance makes them the preferred contact solution wherever fixed contact pins would generate unacceptable contact resistance variation or intermittently lose electrical connection through tolerance accumulation, thermal cycling, or vibration.
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Matched plunger-barrel clearance Plunger shaft ±0.003mm and barrel bore ±0.003mm producing consistent 0.005–0.015mm sliding clearance — smooth compression without binding, minimum lateral play for fine-pitch spring contact applications.
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Complete size range Ultra-miniature Ø0.3mm plunger for smart ring and wearable contacts through Ø20mm heavy-duty industrial power spring contacts — covering every spring loaded electrical contact pin application.
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All tip geometries & mounting types Crown, spear, flat, concave, pointed, serrated, dimple, fork — matched to mating surface. Through-hole, SMT, press-fit, threaded, flange, and snap-in barrel mounting configurations.
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40–60% China cost advantage China spring loaded contact pins machining delivers 40–60% cost reduction versus Japanese and US manufacturers — same ±0.003mm tolerances, Ra 0.2μm surface finish, and plating documentation at significantly lower cost.
Why CNCPioneer for
Spring Loaded Contact Pins?
CNCPioneer offers Swiss CNC precision, precious metal plating capability, and manufacturing scale that makes us a preferred supply partner for electronics OEMs, test equipment manufacturers, wearable device companies, medical device OEMs, and industrial connector suppliers worldwide.
Matched Clearance ±0.003mm
Plunger shaft ±0.003mm matched with barrel bore ±0.003mm produces consistent 0.005–0.015mm sliding clearance across production lots — smooth compression without stiction, minimum lateral play, no individual part matching or selective assembly required.
Ø0.3mm Minimum Plunger
Swiss CNC lathe guide bushing support enables plunger shaft diameters as small as Ø0.3mm with barrel bore as small as Ø0.35mm — covering ultra-miniature smart ring and wearable charging contacts through large-diameter industrial power spring contacts.
All Tip Geometries
Crown, spear, flat, concave, pointed, serrated, chisel, dimple, fork — dedicated machining protocols for each geometry with angular accuracy ±0.5°, tip radius ±0.01mm, and 100% optical tip geometry inspection on every spring loaded contact pin produced.
Complete Assembly Programs
Plunger, spring, and barrel components assembled and functionally tested — contact resistance ≤20mΩ at rated contact force verified, spring force within ±10%, over-travel range confirmed — delivered ready for direct installation into customer housing designs.
Selective Gold Plating
Gold plating on plunger tip and barrel external contact zone only — reduces precious metal cost 40–60% for high-volume consumer electronics spring contact applications while maintaining full contact performance at the critical electrical interface zones.
40–60% China Cost Advantage
China spring loaded contact pins machining delivers 40–60% cost reduction versus Japanese and US spring contact manufacturers — same ±0.003mm dimensional tolerances, Ra 0.2μm surface finish, XRF plating documentation, and 100% CCD sorting.
Types of Spring Loaded
Contact Pins We Manufacture
CNCPioneer produces the complete range of spring loaded contact pins — from ultra-miniature wearable device charging contacts and PCB test fixture spring probes to high-current battery contact springs, IP-rated industrial spring contacts, and biocompatible medical device spring contacts — in all tip geometries and mounting configurations.
Standard Pogo Pin Spring Contacts
Through-hole (solder tail), SMT (flat base), press-fit (knurled barrel), right-angle, and threaded barrel configurations. Plunger shaft ±0.003mm, barrel bore ±0.003mm, contact resistance ≤50mΩ at rated force. Beryllium copper and brass in all standard tip geometries with gold, palladium, and nickel plating.
Wearable Device Charging Contact Pins
Ultra-miniature spring loaded contact pins for smartwatch cradles (Ø0.5–1.5mm), fitness tracker charging, TWS earphone cases, and smart ring contacts (Ø0.3–0.5mm). O-ring groove geometry for IPX7/IPX8 sealing. Hard gold plating (0.5–1.0μm) over nickel for 3,000–10,000 cycle wearable charging life.
Battery Contact Spring Pins
Single-cell battery contact pins (AA/AAA/18650/coin cell), Li-ion battery pack contact arrays, and high-current EV/e-bike battery contacts (5–50A). Copper C11000 and silver-plated contacts for maximum current-carrying capacity. Multi-point battery contact arrays with ±0.05mm position accuracy for simultaneous multi-terminal engagement.
PCB Test Fixture Spring Contact Pins
ICT and functional test spring contacts with crown, spear, flat, and concave tip geometries for HASL, ENIG, OSP, and conformal-coated PCB contact. Fine-pitch spring contacts at 0.5mm, 0.8mm, and 1.0mm pitch. BeCu C17200 AT plungers with rhodium plating for 500,000–1,000,000+ compression cycle life.
Industrial Spring Contact Pins
High-current industrial power spring contacts (10–100A), high-temperature spring contacts with Inconel springs and PEEK barrels (to 260°C), IP67/IP68/IP69K waterproof sealed spring contacts, AGV charging docking contacts, and vibration-resistant spring contacts for harsh industrial environments.
Medical Device & Aerospace Spring Contacts
Biocompatible spring loaded contact pins — platinum-iridium, MP35N, titanium — for implantable medical device connectors (IS-1, DF-1, MRI-safe) with ISO 10993 compliance. AS9100D certified MIL-spec aerospace spring contacts with full FAIR documentation. High-temperature burn-in socket spring contacts with Paliney and Kovar components.
Industries & Applications
CNCPioneer supplies spring loaded contact pins to electronics OEMs, test fixture manufacturers, wearable device companies, medical device OEMs, industrial equipment suppliers, and automotive electronics companies across the full spectrum of spring loaded electrical contact pin applications worldwide.
Consumer Electronics
Spring loaded electrical contact pins for smartphone charging cradles, tablet docking stations, TWS earphone charging cases, smart speaker contacts, and portable electronic device power and data interfaces. High-volume China spring contacts with selective gold plating for competitive consumer electronics contact cost.
Wearable Technology
Ultra-miniature spring loaded contact pins for smartwatch charging cradles, fitness tracker interfaces, smart glasses data contacts, hearable charging cases, and body-worn health monitor interfaces. Miniaturization, waterproofing compatibility, and aesthetic integration are the primary design drivers for wearable spring contact applications.
PCB Test & Inspection
Spring loaded contact pins for ICT test fixtures, functional test jigs, flying probe test systems, and in-system programming (ISP) fixtures. High-cycle BeCu plungers with rhodium plating for 500,000–1,000,000+ compression cycle life in electronics manufacturing test operations.
Medical Devices
Biocompatible spring loaded electrical contact pins for wearable medical device charging interfaces, implantable connector systems (IS-1, DF-1, MRI-safe), diagnostic equipment probe connections, and surgical robot tool changer electrical interfaces. ISO 10993 compliant materials with full material traceability.
Industrial Automation & EV
High-current spring loaded contact pins for industrial robot tool changer electrical interfaces, AGV charging docking contacts (10–100A), and EV charging station docking contacts. IP67/IP68/IP69K rated sealed barrel designs for harsh industrial environments. IATF 16949 certified for automotive EV supply chain programs.
Aerospace, Defense & Space
High-reliability spring loaded contact pins for aerospace avionics test equipment, military electronics contact systems, spacecraft electrical interface testing, and burn-in socket spring contacts. AS9100D certified production with full FAIR documentation and MIL-specification plating compliance for flight-critical applications.
Spring Loaded Contact Pins
Machining Capabilities
CNCPioneer's Shenzhen facility combines 78+ Swiss CNC lathes for miniature plunger tip geometries, shaft elements, and barrel bore machining with 66+ MAZAK mill-turn centers for larger barrel housings and industrial spring contact bodies — with 100% CCD sorting, CMM verification, XRF plating inspection, and assembly functional testing.
Swiss CNC Lathe Fleet
78+ Swiss CNC lathes (Star SR-32J, Citizen A20/A16, Tsugami B206, Nomura) · Plunger diameter Ø0.3mm minimum · Plunger shaft tolerance ±0.003mm · Barrel bore ±0.003mm · Concentricity bore-to-OD ±0.003mm · Tip angle ±0.5° · Tip radius ±0.01mm · Contact surface finish Ra 0.2μm.
MAZAK Mill-Turn Fleet
66+ MAZAK mill-turn centers (Integrex, Quick Turn series) · Large-diameter industrial power spring contact barrels · High-current battery contact bodies · 5-axis simultaneous machining · Complex flange and O-ring groove geometry · Heavy-duty AGV docking contact housings.
Spring Contact Pin Tolerances
Plunger shaft ±0.003mm · Barrel bore ±0.003mm · Plunger-barrel clearance 0.005–0.015mm · Tip angle ±0.5° · Tip radius ±0.01mm · Concentricity ±0.003mm · Overall length ±0.02mm · SMT base flatness 0.005mm · O-ring groove width ±0.02mm · Contact resistance ≤20mΩ.
Spring Contact Materials
BeCu C17200 AT / C17500 · Brass C3604 / C2600 · Phosphor bronze C51000 · Copper C11000 ETP · Stainless 303/316L / 17-4PH · Titanium Grade 5 · MP35N · Pt-Ir · Inconel 718 · Kovar · Paliney 7 — all with XRF incoming verification and lot certifications.
Contact Surface Plating
Hard gold MIL-G-45204 (0.5–2.0μm) · Soft gold (wearable contacts) · Selective gold (40–60% cost reduction) · Rhodium (HV 800–1000, 1M+ cycles) · Palladium-nickel HV 400–600 · Silver ASTM B700 (high-current) · Matte tin · Nickel underplate AMS 2403 — XRF every lot.
Assembly & Functional Testing
100% CCD automatic sorting — plunger OD and barrel bore · CMM dimensional reports · Optical tip geometry inspection · 4-wire contact resistance ≤20mΩ verified · Spring force ±10% at defined compression · Over-travel range verification · Plunger sliding force for stiction compliance.
Spring Loaded Contact Pins
Machining Materials
Material selection for spring loaded contact pins balances electrical conductivity, mechanical spring properties for plunger shaft function, ductility for barrel crimping, corrosion resistance, and plating compatibility across applications ranging from ultra-miniature wearable contacts to high-current industrial power springs.
C17200 AT
Highest-strength copper alloy · Excellent spring-back · Good conductivity · High-cycle ICT probes, high-reliability wearable contacts, aerospace spring contacts — 1,000,000+ cycle life
C17500
High conductivity BeCu · Good spring properties · High-conductivity power spring contact plungers requiring lower electrical resistance in the current path
C3604 / C2600
Excellent machinability · Good conductivity · C3604: high-volume consumer electronics, ICT barrels · C2600: high ductility for crimp barrel deformation operations
C51000
Good spring properties · Excellent corrosion resistance · Moderate-cycle spring contacts, corrosion-resistant applications in marine and food processing environments
C11000 ETP
Highest conductivity · Excellent ductility · High-current battery contact plungers, EV charging spring contacts — minimum contact resistance at 5–100A current densities
303 / 316L
Good corrosion resistance · Non-magnetic · Corrosion-resistant barrel bodies for food, marine, and harsh chemical environment spring contact applications
17-4PH
High strength · Good corrosion resistance · High-load spring contact structural components and high-retention-force barrel bodies in demanding mechanical environments
MP35N / Pt-10%Ir / Ti Grade 5
MP35N: high strength, biocompatible · Pt-Ir: biocompatible, high hardness · Ti: lightweight, non-magnetic · Implantable medical device spring contacts, medical wearable contacts
Inconel 718 / Paliney 7
Inconel: high-temperature spring strength to 260°C · Paliney: excellent high-temperature spring properties, oxidation resistant · High-temperature industrial and burn-in socket spring contacts
Kovar (ASTM F15)
Matched thermal expansion with ceramics · Good machinability · Hermetic sealed spring contact assemblies requiring glass-to-metal or ceramic-to-metal seal integrity in aerospace and defense applications
Plating & Surface Finishing
for Spring Loaded Contact Pins
Surface plating on spring loaded electrical contact pin components serves multiple simultaneous functions: minimizing contact resistance at the tip-to-surface and plunger-to-barrel sliding interfaces, preventing base metal oxidation, providing wear resistance across high contact cycle counts, and ensuring galvanic compatibility with mating contact surfaces. Ra 0.2μm contact surface finish ensures uniform plating on every geometry.
Hard Gold — MIL-G-45204 Class 1
Industry standard for high-reliability spring loaded electrical contact pin plunger tips and barrel external contact surfaces. Cobalt-hardened gold (HV 130–200), 0.5–2.0μm over 1.0–2.5μm nickel underplate. Stable low contact resistance immune to atmospheric oxidation across thousands of mating cycles. XRF thickness verification every production lot.
Selective Gold Plating
Gold plating applied only to plunger tip contact zone and barrel external contact zone, with nickel or tin on non-contact surfaces. Selective plating reduces precious metal cost by 40–60% for high-volume consumer electronics spring loaded contact applications while maintaining full contact performance at the critical electrical interface zones. Standard practice for smartwatch and wearable device charging contacts.
Rhodium Plating
Ultra-hard rhodium (HV 800–1000) for spring loaded contact pins in the highest-cycle applications exceeding one million compression cycles — ICT test fixtures and high-frequency production test spring contacts. Rhodium provides 5–10× longer contact tip life compared to hard gold, significantly reducing probe replacement frequency and fixture maintenance cost.
Silver Plating — ASTM B700
High-conductivity silver plating for high-current spring loaded electrical contact pins — battery contact springs, EV charging contacts, and industrial power spring contacts — where silver's superior electrical and thermal conductivity minimizes resistive heating at high current densities. Tarnish inhibitor treatment applied for storage and handling protection.
Palladium-Nickel Plating
Cost-effective wear-resistant plating for spring loaded electrical contact pins requiring better cycle life than gold at lower precious metal cost than rhodium. Palladium-nickel (80% Pd, 20% Ni, HV 400–600) provides good oxidation resistance and intermediate hardness for moderate-cycle ICT and functional test spring contact applications.
Tin & Nickel Plating
Matte tin (preferred over bright tin — minimal tin whisker risk) for standard-reliability barrel and solder tail surfaces with excellent solderability for PCB through-hole and SMT mounting. Nickel underplate (AMS 2403) beneath all gold, rhodium, and palladium on plunger tip and barrel contact surfaces — preventing base metal diffusion through the precious metal layer over time.
All spring loaded contact pins plating certifications — XRF thickness records per production lot, plating adhesion tape test results, and visual inspection records under 10× magnification — are provided with every shipment as part of the quality documentation package supporting OEM qualification programs.
Quality Assurance for
Spring Loaded Contact Pins
Spring loaded contact pin quality assurance covers base material qualification, matched plunger-barrel dimensional inspection, 100% CCD automatic sorting, plating verification, and assembly functional testing — contact resistance, spring force, over-travel range, and plunger sliding compliance — on every spring loaded contact pin order.
Material Incoming Inspection
BeCu lot certification confirming C17200 AT hardness (HRC 38–43) and tensile strength; XRF composition verification on all materials; dimensional verification of bar stock diameter and straightness; beryllium content documentation per OSHA 29 CFR 1910.1024 for all BeCu orders. Stainless steel, titanium, MP35N, and specialty alloy composition verification by XRF.
Machining Process Controls
Dedicated spring contact pin tooling with monitored wear limits; in-process plunger shaft diameter measurement by air gauge at defined production intervals; barrel bore monitoring by calibrated bore gauge; tip geometry verification by optical measurement on first article and production samples; 100% CCD automatic sorting of critical plunger and barrel diameters at production speeds.
First Article Dimensional Inspection
Complete Mitutoyo CMM dimensional report — plunger shaft diameter, barrel bore diameter, barrel outer diameter, tip geometry angular accuracy and radius, solder tail dimensions, overall extended and compressed lengths, concentricity, O-ring groove dimensions (where applicable), and SMT base flatness. Balloon drawing referencing all drawing dimensions. Optical tip geometry measurement.
Assembly Functional Testing
4-wire milliohm contact resistance measurement at rated contact force — ≤20mΩ for high-performance spring contacts, ≤50mΩ standard; spring force measurement at defined compression points by calibrated force gauge within ±10%; over-travel range verification; plunger sliding force measurement for stiction and binding compliance; plunger retention force verification for crimp or press-fit barrel retention.
Plating Verification
XRF plating thickness measurement on gold, palladium, rhodium, and silver plated spring loaded contact pins every production lot. Plating adhesion tape test per applicable military and commercial specifications. Visual inspection under 10× magnification for plating uniformity and coverage on plunger tip and barrel contact surfaces.
Documentation Package
Material certifications with full lot traceability; CMM dimensional reports; optical tip geometry records; XRF plating thickness records; assembly functional test records (contact resistance, spring force, over-travel); and Certificate of Conformance — with every spring loaded contact pins shipment. FAIR per AS9102 for aerospace programs; PPAP for automotive programs.
AS9100D & IATF 16949 Quality System
for Spring Loaded Contact Pins
CNCPioneer's AS9100D and IATF 16949 dual-certified quality system meets the documentation and measurement requirements of spring loaded contact pin OEM qualification programs across aerospace, automotive, medical, and consumer electronics applications. We welcome on-site supplier qualification audits.
Dimensional Inspection
Complete CMM dimensional report with balloon drawing — plunger shaft, barrel bore, concentricity, tip geometry, solder tail, SMT base flatness, and overall lengths. 100% CCD automatic sorting of critical plunger shaft OD and barrel bore ID at production speeds.
- 100% CCD sorting — plunger OD & barrel bore
- CMM: concentricity, tip geometry, lengths
- Optical tip radius ±0.01mm & angle ±0.5°
Assembly Functional Testing
4-wire contact resistance measurement ≤20mΩ at rated contact force. Spring force within ±10% at defined compression points by calibrated force gauge. Over-travel range verification. Plunger sliding force compliance — no stiction or binding across full compression stroke.
- Contact resistance ≤20mΩ 4-wire verified
- Spring force ±10% calibrated force gauge
- Over-travel & sliding force compliance
XRF Plating & Material Verification
XRF plating thickness measurement on gold, rhodium, silver, and palladium plated spring contacts every production lot. Plating adhesion tape test per applicable specifications. Material composition XRF on incoming BeCu and specialty alloy materials. BeCu lot hardness and tensile strength certification per OSHA beryllium safety documentation requirements.
- XRF gold/rhodium/silver thickness every lot
- Plating adhesion tape test & 10× visual
- BeCu AT condition hardness certified
OEM Documentation Package
Material certifications with lot traceability, CMM reports, optical tip geometry records, surface finish records, XRF plating records, assembly functional test records, and Certificate of Conformance. FAIR per AS9102 for aerospace programs; PPAP with Cpk ≥ 1.67 for automotive programs; ISO 10993 biocompatibility documentation for medical programs.
- Certificate of Conformance (C of C)
- FAIR (aerospace) or PPAP (automotive)
- ISO 10993 docs for medical applications
Spring Loaded Contact Pins FAQ
Common questions from electronics OEMs, test fixture manufacturers, wearable device companies, and industrial equipment suppliers about CNCPioneer's spring loaded contact pins machining capabilities and supply programs.
Spring loaded contact pins incorporate a compressed spring mechanism that maintains controlled, consistent contact force over a defined compression range regardless of mechanical tolerance variation in the mating assembly. Fixed contact pins rely on rigid mechanical contact without spring compliance — connection reliability depends entirely on dimensional accuracy of both pin and mating surface position. Spring loaded electrical contact pins are preferred wherever dimensional tolerance accumulation, thermal expansion differences, vibration, or repeated mating cycles would cause fixed contact pins to generate unacceptable contact resistance variation or lose electrical connection intermittently. The spring compliance absorbs these variations while maintaining the contact force needed for reliable, low-resistance electrical connection throughout the product's operational life.
CNCPioneer maintains plunger shaft-to-barrel bore diametric clearance of 0.005–0.015mm in standard spring loaded contact pin assemblies and 0.005–0.010mm in high-precision assemblies requiring minimum lateral plunger play. This range balances two competing requirements: sufficient clearance for smooth plunger sliding without stiction across the full compression stroke and operating temperature range, and minimum clearance for low lateral plunger displacement in fine-pitch spring contact applications. CNCPioneer achieves this by matching plunger shaft outer diameter tolerance of ±0.003mm with barrel bore inner diameter tolerance of ±0.003mm, producing consistent clearance across production lots without individual part matching or selective assembly.
CNCPioneer achieves assembled spring loaded electrical contact pin contact resistance below 50mΩ at rated contact force for standard gold-plated designs, and below 20mΩ for high-performance spring contacts with optimized plunger tip geometry and plating. Contact resistance has three contributions: plunger tip-to-mating surface (governed by contact force, tip geometry, and plating), internal plunger shaft-to-barrel sliding contact (governed by bore clearance and plating), and barrel-to-PCB connection (governed by solder or press-fit quality). CNCPioneer optimizes internal resistance through barrel bore surface finish of Ra 0.4μm, gold plating on barrel bore internal surfaces, and precise plunger-to-barrel clearance control.
For wearable device charging spring loaded electrical contact pins — smartwatch and fitness tracker charging contacts see 1,000–2,000 compression cycles per year totaling 3,000–10,000 cycles over 3–5 year product lifetimes — we recommend beryllium copper C17200 AT condition plunger material with hard gold plating (0.5–1.0μm cobalt-hardened gold over nickel underplate). BeCu AT condition provides the spring-back properties and fatigue resistance maintaining consistent contact force across the product lifetime without permanent deformation. For ultra-high cycle wearable applications exceeding 50,000 cycles, rhodium plating over BeCu provides significantly extended contact tip life. Our engineering team recommends the optimal material and plating combination for your specific wearable device contact cycle requirement during DFM review.
Yes. CNCPioneer machines spring loaded electrical contact pin barrel components with integrated O-ring groove geometry for IP67/IP68 rated sealed spring contact assemblies. The O-ring groove — width tolerance ±0.02mm, depth tolerance ±0.01mm, groove base radius to standard O-ring specifications — is machined with dimensional accuracy ensuring correct O-ring compression (typically 15–25% diametric compression) for IP-rated sealing without excessive O-ring stress that would impair plunger sliding function. CNCPioneer verifies O-ring groove geometry by CMM on every first article. IP rating performance verification is coordinated with customer sealing system validation testing.
CNCPioneer machines spring loaded contact pin plunger components with shaft diameters as small as Ø0.3mm and barrel bore diameters as small as Ø0.35mm on our Swiss CNC lathes. At these minimum dimensions, plunger shaft tolerance of ±0.003mm and barrel bore tolerance of ±0.003mm remain achievable through dedicated sub-millimeter machining protocols. Practical lower limits are governed by spring selection — springs small enough to fit within Ø0.35mm barrel bores have limited force output, restricting ultra-miniature spring loaded contact pins to low-contact-force applications such as wearable charging contacts, signal contacts, and low-current battery contacts. Our engineering team advises on spring force feasibility during DFM review for ultra-miniature spring contact designs.
Prototype quantities of standard tip geometry spring loaded contact pins in brass or BeCu without plating: 5–7 business days. Prototype quantities with gold plating and assembly functional testing: 8–12 business days. Custom tip geometry or special material spring contacts: 10–14 business days for prototype quantities. Production quantities of standard spring contact configurations: 3–4 weeks. Production quantities of custom or specialty spring loaded electrical contact pins: 4–6 weeks depending on material, tip geometry complexity, plating specification, and order volume. Wholesale programs with blanket orders and committed lead times are available for customers requiring consistent large-volume supply.
CNCPioneer supplies both fully assembled spring loaded contact pins (plunger + spring + barrel, assembled and functionally tested) and individual machined components depending on customer requirements. Fully assembled spring contacts are delivered with contact resistance ≤20mΩ at rated contact force, spring force within ±10%, and over-travel range compliance verified — ready for direct installation into customer housing designs. Component supply (plunger, barrel, spring) is available for customers performing their own assembly operations. Complete assembly programs eliminating customer spring contact assembly operations are available for high-volume consumer electronics and wearable device programs.
Get a Quote for Spring Loaded Contact Pins
Upload your spring loaded contact pin drawing, dimensional specification, or product requirement and receive a free DFM review and competitive quotation within 24 hours. CNCPioneer's engineering team will review your spring contact design for machining feasibility, recommend optimal material and tip geometry for your application, confirm plating specification for your required contact cycle life, coordinate spring force specification with spring procurement, and provide a complete OEM program quotation covering prototype, qualification, and volume production pricing.