M3 5 Socket Head Cap Screw & M3 Hex Cap Screw | Factory
M3 5 Socket Head Cap Screw & M3 Hex Cap Screw | Factory-Direct Precision Fasteners
Eliminate supply chain risk with ISO 9001-certified M3 5 socket head cap screws and M3 hex cap screws — 40% lower TCO vs. European distributors, with full traceability and 7-day lead times.
Why Your Current M3 Fastener Sourcing Is Hurting Your Bottom Line
Every year, procurement teams waste millions on inconsistent quality, hidden fees, and delayed shipments — especially with small metric fasteners like M3 5 socket head cap screws and M3 hex cap screws.
Price Volatility & Markups
European and US distributors often add 35–55% markup on M3 hex cap screws from Asian factories. You pay for warehousing, broker fees, and currency buffers — not just the fastener.
Inconsistent Dimensional Tolerances
A 2023 industry benchmark revealed that 1 in 8 M3 socket head cap screws from non-certified suppliers failed the 6g thread tolerance check. This causes assembly jams, rework, and field failures.
Shipping & Lead Time Surprises
Split shipments, minimum order quantities (MOQs) of 50,000+, and air freight surcharges can add $0.03–$0.08 per unit in hidden logistics costs. Your production line stops when the M3 hex cap screw shipment is late.
Compliance & Documentation Gaps
Missing CE, RoHS, or REACH declarations on M3 5 socket head cap screws can delay customs clearance by 3–6 weeks. Your engineering team can't accept material without full traceability.
Supplier Responsiveness & Customization
Most distributors cannot accommodate OEM head markings, non-standard lengths, or mixed-material batches for M3 hex cap screws. You need a factory partner, not a middleman.
Boen Fastener: Your Integrated Supply Chain for M3 5 Socket Head Cap Screw & M3 Hex Cap Screw
With 15+ years of export expertise and a 30,000 m² manufacturing base in Hebei, China, we deliver M3 fasteners that meet or exceed DIN/ISO standards — at factory-direct pricing with full ERP integration support.
Powerful Factory, Consistent Quality
Every batch of M3 5 socket head cap screws undergoes 100% dimensional inspection (optical sorting + manual sampling). We maintain CPk ≥ 1.67 on critical thread parameters.
OEM/ODM Design & Custom Marking
Need a custom head logo, specific underhead radius, or non-standard drive on your M3 hex cap screw? Our tool room delivers new forming dies in 7–10 days. Low MOQ options available.
High-Speed Delivery & ERP Integration
Standard lead time: 7–15 days for M3 5 socket head cap screws. We provide EDI/API order tracking and can integrate with SAP, Oracle, and NetSuite for seamless procurement.
M3 5 Socket Head Cap Screw & M3 Hex Cap Screw — Full Specifications
🔩 M3 5 Socket Head Cap Screw (DIN 912 / ISO 4762)
| Parameter | Specification | Tolerance | Notes |
|---|---|---|---|
| Thread Size | M3 x 0.5 | 6g (ISO 965-1) | Standard metric coarse |
| Length (L) | 5 mm (nominal) | ±0.3 mm (A class) | Custom lengths available |
| Head Diameter (dk) | 5.5 mm | h13 | Cylindrical socket head |
| Hex Socket Size | 2.5 mm (Allen key) | +0.05 / -0.00 | Precision broached |
| Material Grades | 12.9 / 10.9 / A2-70 / A4-80 | — | Alloy steel or stainless |
| Surface Treatment | Black oxide / Zinc plated / Passivated | Neutral salt spray 72h+ | RoHS & REACH compliant |
🔩 M3 Hex Cap Screw (DIN 933 / ISO 4017)
| Parameter | Specification | Tolerance | Notes |
|---|---|---|---|
| Thread Size | M3 x 0.5 | 6g (ISO 965-1) | Standard metric coarse |
| Width Across Flats (s) | 5.5 mm | h13 | Hex head |
| Head Height (k) | 2.0 mm | ±0.2 mm | Standard hex profile |
| Length Options | 5 mm – 30 mm (standard) | ±0.3 mm | Custom up to 50 mm |
| Material Grades | 8.8 / 10.9 / A2-70 / A4-80 | — | Carbon steel / stainless |
| Finish | Plain / Zinc clear / Hot-dip galvanized | Neutral salt spray 96h+ | Custom coatings available |
Automotive Electronics
M3 5 socket head cap screws used in ECU housings, sensor brackets, and interior trim modules. Vibration-resistant with Loctite patch option.
Agricultural Machinery
M3 hex cap screws in control panels, harness clamps, and light-duty structural joints. Zinc-flake coating for corrosion resistance.
Construction & HVAC
Ductwork supports, cable trays, and access panels. Stainless A4-80 M3 5 socket head cap screws for outdoor and high-humidity zones.
Everything You Need to Know About M3 5 Socket Head Cap Screws & M3 Hex Cap Screws
What is the difference between an M3 5 socket head cap screw and an M3 hex cap screw?
The M3 5 socket head cap screw has a cylindrical head with an internal hex (Allen) drive, designed for recessed or tight-clearance applications. The M3 hex cap screw has a standard external hex head for wrench or socket drive. Both share the same M3 x 0.5 thread but differ in head geometry and torque transmission.
What is your MOQ for M3 5 socket head cap screws?
Our standard MOQ is 5,000 pieces per size. For OEM/ODM custom orders, the MOQ is 10,000 pieces. We offer sample packs of 50–100 pieces for qualification at a nominal cost (free for signed NDAs and potential long-term contracts).
Do you provide certificates of conformity and material test reports?
Yes. Every shipment of M3 hex cap screws and M3 5 socket head cap screws includes a Certificate of Conformance (CoC), plus mill test reports (MTR) upon request. We also provide CE, RoHS, REACH, and ISO 9001:2015 documentation.
What are your shipping terms and delivery times to the USA/Europe?
We ship FOB Tianjin, CIF, or DDP depending on your preference. Standard sea freight to the US West Coast takes 18–22 days, to Northern Europe 25–30 days. Air freight is available for urgent orders. We consolidate shipments to reduce your freight cost per kg.
Can you match the thread tolerance of my existing M3 hex cap screw supplier?
Absolutely. We manufacture to 6g thread tolerance as standard (ISO 965-1). For critical applications, we can supply 5g6g or 4h tolerances. We recommend sending 3–5 samples of your current fastener for our QA team to benchmark against our production.
What payment methods do you accept for international orders?
We accept T/T (wire transfer), L/C (Letter of Credit) at sight, and for qualified buyers, 30% deposit + 70% against BL copy. We also support PayPal for sample orders under $500. All payments are processed with full compliance documentation.
Do you offer free samples for M3 5 socket head cap screws?
Yes. We provide free samples (up to 20 pieces per size) for qualified buyers. You only pay the shipping cost. For larger evaluation quantities, we charge a nominal fee that is 100% refundable on your first production order. Request your sample kit now →
David Harrington
Senior Fastener Engineer & Supply Chain Consultant · 18+ years in industrial fasteners
David has worked with 50+ B2B buyers across automotive, construction, and energy sectors, helping them optimize fastener specifications and reduce procurement costs. He leads Boen's technical export team and has authored 12 industry whitepapers on metric fastener standards and global sourcing best practices.
Get Your Free Sample Kit & Factory-Direct Quote in 24 Hours
No minimum commitment. Free samples (up to 20 pcs per size) + 3D CAD models + full compliance pack. Risk-free trial with a 100% money-back guarantee on your first order if not satisfied.
✅ Risk-Free Guarantee: Free samples + 100% refund on first order if quality doesn't meet spec. We stand by our M3 5 socket head cap screws and M3 hex cap screws.
Proven Performance Across 30+ Countries
🏭 Hanguang Industrial Park, Handan — 30,000 m² manufacturing facility
"We switched to Boen for our M3 5 socket head cap screws and reduced our per-unit cost by 42%. The 12.9 grade material passed our 100% batch inspection — zero failures in 6 months."
"The M3 hex cap screws from Boen meet our ASME/ANSI requirements. Their documentation and traceability are on par with ISO 9001:2015. Lead time: 9 days from PO to port."
"We needed custom head markings on our M3 5 socket head cap screws. Boen delivered the OEM tooling in 8 days. The quality is consistent and the pricing is unbeatable."