5mm Socket Head Cap Screw & 6mm Cap Screw | Supplier
Premium 5mm Socket Head Cap Screw & 6mm Cap Screw â Factory-Direct Supplier
âď¸ Stop overpaying for inconsistent fasteners. We deliver ISO-certified, high-tensile socket head cap screws in 5mm and 6mm diameters â with factory-direct pricing, 10-day lead times, and full traceability for OEMs, distributors, and procurement teams across 30+ countries.
đ Table of Contents
đ¨ The Real Cost of Cheap Fasteners
Every purchasing manager knows the pain â but the numbers tell a stark story.
Premium Markup on Imports
Distributors in the US and Europe often add 30â40% to the factory price. You're paying for warehousing, not quality.
Fasteners Fail Inspection
Industry data shows ~8% of low-cost socket head cap screws fail on hardness or thread tolerance â leading to costly rework.
Average Lead Time (Ocean Freight)
Long shipping times + port delays = production halts. Your line can't wait 3â4 weeks for a box of screws.
Hidden Cost per Rejection
Between inspection, documentation, return shipping, and downtime â a single rejected batch can cost thousands.
đ You don't need a cheaper screw. You need a reliable, traceable, factory-direct partner for your 5mm socket head cap screw and 6mm cap screw supply.
â Why Boen Fasteners â Your Trusted 5mm Socket Head Cap Screw & 6mm Cap Screw Supplier
We don't just sell fasteners â we engineer reliability into every thread. Here's what sets us apart.
Powerful Factory, Direct Pricing
Over 10 years of export experience, 30,000+ sqm facility, and 200+ skilled workers. We control every step â from raw material to heat treatment to final inspection. No middlemen, no markup.
Quality Assurance You Can Trust
Every 5mm socket head cap screw and 6mm cap screw undergoes hardness testing, tensile strength verification, and thread gauge inspection. ISO 9001:2015, RoHS, and CE certified â with full batch traceability.
High-Speed Delivery
10â15 days for standard production. Air freight options available in 5â7 days. We maintain buffer stock of popular sizes â including 5mm and 6mm socket head cap screws â to slash your lead time.
OEM/ODM Customization
Need a specific coating, drive type, or grade? We offer custom head markings, zinc/nickel plating, black oxide, and Dacromet. Send us your drawing â we'll deliver the exact 5mm or 6mm cap screw you need.
Global Logistics, One-Stop Service
We ship to 30+ countries across the US, Europe, and Southeast Asia. Full documentation â from COO to customs clearance â handled by our team. DDP terms available for hassle-free importing.
ERP Integration & Supply Stability
We work with procurement teams to align forecast-based ordering, consignment stock, and scheduled releases. Reduce your inventory carrying cost while ensuring your 5mm and 6mm cap screws are always on hand.
đ Technical Specifications â 5mm Socket Head Cap Screw & 6mm Cap Screw
Detailed specs for engineers, QC teams, and procurement verification. All data is tested per ISO 898-1 and DIN 912 standards.
| Parameter | 5mm Socket Head Cap Screw | 6mm Cap Screw |
|---|---|---|
| Thread Diameter (d) | M5 x 0.8mm | M6 x 1.0mm |
| Head Diameter (dk) | 8.5mm (max) | 10.0mm (max) |
| Head Height (k) | 5.0mm (max) | 6.0mm (max) |
| Hex Socket Size | 4mm (Allen key) | 5mm (Allen key) |
| Tensile Strength (Grade 12.9) | ⼠1220 MPa | ⼠1220 MPa |
| Hardness (HRC) | 38 â 44 HRC | 38 â 44 HRC |
| Material Grades | Alloy Steel 40Cr, 42CrMo4, Stainless A2-70 / A4-80 | Alloy Steel 40Cr, 42CrMo4, Stainless A2-70 / A4-80 |
| Surface Finish | Black Oxide, Zinc Plated, Nickel Plated, Dacromet, HDG | Black Oxide, Zinc Plated, Nickel Plated, Dacromet, HDG |
| Available Lengths | 6mm â 60mm (custom up to 120mm) | 8mm â 80mm (custom up to 150mm) |
đ All grades and finishes are RoHS compliant. Custom specifications available for OEM projects. Contact us for a full material certificate.
đ§ Where Precision Matters â Real-World Applications
Our 5mm socket head cap screw and 6mm cap screw are trusted across industries that demand reliability.
Automotive
Engine mounts, transmission housings, brake calipers. Grade 12.9 for high-stress environments.
Agricultural Machinery
Tractor assemblies, harvester components, irrigation systems. Corrosion-resistant finishes for outdoor use.
Construction & Structural
Steel frame connections, scaffolding, heavy equipment fastening. High-clamp-load performance.
Industrial Machinery
CNC equipment, presses, conveyors, robotics. Precision threads for vibration-resistant assemblies.
đ Case Snapshot: A US-based agricultural equipment OEM switched to Boen Fasteners for their M6 cap screw supply. Result: 22% cost reduction, zero defects in 6 months, and lead time cut from 28 to 12 days.
đ Trusted by Industry Leaders Across the Globe
Our fasteners are used by companies that demand uncompromising quality.
"We switched our M5 and M6 socket head cap screw supply to Boen. Their consistent quality and fast shipping saved us 18% on total procurement cost. Highly recommend."
"The traceability and certification documentation for their 6mm cap screws is outstanding. Zero quality issues in over 200,000 units delivered."
"Boen's factory-direct pricing on 5mm socket head cap screws cut our fastener budget by 25%. The team is responsive and shipping is always on time."
â Frequently Asked Questions
Everything you need to know about sourcing 5mm socket head cap screw and 6mm cap screw from Boen Fasteners.
What grades do you offer for 5mm socket head cap screws and 6mm cap screws?
We supply Grade 12.9 alloy steel (standard), Grade 10.9, and stainless steel A2-70 / A4-80. For high-corrosion environments, we offer hot-dip galvanized and Dacromet-coated options. All grades are fully certified per ISO 898-1.
What is the minimum order quantity (MOQ) for M5 and M6 cap screws?
Our standard MOQ is 5,000 pcs per size for stock items. For custom specifications (special coating, length, or head marking), MOQ is 20,000 pcs. We also offer sample orders (50â200 pcs) for qualification â shipped within 5 days.
How do you ensure quality control for 5mm and 6mm socket head cap screws?
Every batch undergoes 3-stage inspection: incoming raw material chemical analysis, in-process dimensional & hardness checks, and final random sampling per AQL 2.5. We provide a Mill Test Certificate with each shipment. Third-party inspection (SGS, BV) is available on request.
What are the typical lead times for 5mm and 6mm cap screw orders?
For standard sizes: 10â15 days production + shipping. Air freight: 5â7 days total. Sea freight: 25â35 days depending on destination. We keep buffer stock of popular sizes â request our Quick Ship list for 7-day dispatch.
Do you offer OEM/ODM customization for 5mm socket head cap screws?
Absolutely. We can customize head markings, drive types, thread lengths, coatings, and packaging. Send us your drawing or specification â our engineering team will provide a tailored solution. Free samples available for custom designs.
How do you handle shipping and customs for international orders?
We offer FOB, CIF, and DDP terms. Our logistics team handles all documentation â COO, packing list, commercial invoice, and bill of lading. For DDP, we manage customs clearance and door delivery. We ship via DHL, FedEx, Maersk, and COSCO.
Can I get a sample of 5mm or 6mm cap screws before placing a bulk order?
Yes. We provide free samples (up to 50 pcs) for standard specifications. You only pay shipping. Custom samples are available at cost, refundable with your first order. Contact us to request your sample kit.
What payment terms do you accept for international buyers?
We accept T/T (30% deposit, 70% before shipment), L/C at sight, and PayPal for smaller orders. For established customers, we offer net 30 terms (subject to credit approval). All payments are processed through verified banking channels.
â Real Reviews from Our Customers
Hear directly from procurement and engineering professionals who use our 5mm socket head cap screw and 6mm cap screw every day.
"We've been sourcing M5 and M6 socket head cap screws from Boen for over 2 years. Consistent quality, competitive pricing, and their team always responds within 2 hours. A reliable partner for our production line." âââââ
"The dimensional accuracy of their 6mm cap screws is exceptional. We measured 100 pcs from their first shipment â all within tolerance. Full certification package included. Exactly what we need for our ISO 9001 system." âââââ
"We switched our entire M5 socket head cap screw supply to Boen. Their factory-direct model saved us 30% compared to our previous distributor. Shipping is always on time, and the quality is superior." âââââ
About the Author
David Liu â Senior Technical Advisor, Handan Boen Fastener Manufacturing Co., Ltd. With 15+ years in the industrial fasteners industry, David has helped over 200 procurement teams across 30+ countries optimize their fastener supply chain. He specializes in socket head cap screw engineering, quality systems, and cost-effective sourcing strategies. âď¸ david.liu@fastenboen.com
đ Ready to Secure Your 5mm & 6mm Cap Screw Supply?
Get factory-direct pricing, ISO-certified quality, and 10-day lead times. No middlemen, no delays, no compromises.
đ Hanguang Industrial Park, Yongnian District, Handan City, Hebei Province, China | Daily 09:00 â 17:00
