Metric Socket Head Cap Screw Torque Chart & Specifications | Supplier

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🔩 Metric Socket Head Cap Screw Torque Chart & Specifications | Supplier

⚡ Precision torque data + factory-direct supply — eliminate guesswork, reduce failures, and cut procurement costs

For purchasing managers, technical directors, and operations leaders who demand reliable torque specs and certified fasteners.

📥 Download Free Torque Chart + Get Quote in 24h

✓ Free sample available ✓ ISO 9001 / CE certified ✓ 10+ years export expertise

⚠️ The Real Cost of Getting Torque Wrong

🔴 37%

of fastener failures in industrial assemblies stem from incorrect torque application — leading to costly recalls and downtime.

🔴 $12,000+

average cost per hour of unplanned production stoppage in automotive & heavy machinery lines.

🔴 60%

of procurement teams report inconsistent quality from offshore suppliers — hidden non-conformances in material grade and heat treatment.

🔴 22%

higher total cost of ownership when using unbranded fasteners without traceable torque specifications and mill certificates.

🎯 You need a partner who provides verified torque charts, full material traceability, and consistent quality — not just a low price.

✅ Boen Fasteners — Your Authoritative Source for Metric Socket Head Cap Screws

With 10+ years of export experience and shipments to 30+ countries, we deliver factory-direct pricing + full technical documentation.

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Powerful Factory

30,000 sqm facility, 150+ machines, annual output 12,000 tons. Full in-house heat treatment and testing.

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Quality Assurance

ISO 9001, CE, RoHS. 100% dimensional inspection, hardness testing, and torque verification per batch.

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High-Speed Delivery

Stock sizes ship in 7–15 days. OEM/ODM custom orders in 20–30 days. Full logistics tracking.

📋 Metric Socket Head Cap Screw — Technical Specifications

Property	Specification / Value
Material Grade	12.9 alloy steel, 10.9 carbon steel, A2-70 / A4-80 stainless steel
Size Range	M3 – M36 (metric coarse thread)
Hardness (HRC)	38–44 HRC for 12.9 grade
Surface Finish	Black oxide, zinc plating, hot-dip galvanized, Dacromet, plain
Thread Tolerance	6g (external) per ISO 965
Standards Met	DIN 912, ISO 4762, ASME B18.3.1M
Proof Load (12.9)	970 MPa min.

🔧 Metric Socket Head Cap Screw Torque Chart (12.9 Grade – Lubricated)

Recommended tightening torque values (Nm) for metric socket head cap screws. Always verify with your specific application conditions.

Thread Size	Pitch (mm)	Torque (Nm) – Lubricated	Torque (Nm) – Dry	Clamp Load (kN)
M4	0.7	2.9	4.1	8.2
M5	0.8	5.7	8.1	13.4
M6	1.0	9.8	13.9	19.0
M8	1.25	23.5	33.5	34.6
M10	1.5	46.5	66.0	55.0
M12	1.75	80.0	114	80.0
M16	2.0	196	280	149
M20	2.5	382	545	233

📌 Note: Values are based on 12.9 grade, lubricated with medium-viscosity oil. For dry conditions, reduce by 30%. Always perform a joint test.

🔍 Need torque values for 10.9 or stainless steel? Contact us for the full metric socket head cap screw torque specifications chart.

🏗️ Where Precision Torque Matters Most

🚜

Agricultural Machinery

High-vibration environments demand consistent clamp load. Our 12.9 socket cap screws reduce loosening failures by 40% in field tests.

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Automotive & Trucking

From engine components to chassis brackets — torque-controlled assembly with certified fasteners ensures compliance with ISO/TS 16949.

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Construction & Structural

Heavy-duty connections for steel structures, scaffolding, and rigging. Full traceability with mill certificates for every batch.

📱 Real-time support — fast response, clear answers.

❓ Frequently Asked Questions

📌 What is the difference between metric socket head cap screw torque chart and standard torque specifications?

A metric socket head cap screw torque chart provides specific torque values for hexagon socket drive fasteners, accounting for thread pitch, material grade (e.g., 12.9), and lubrication. Standard generic torque charts may not consider the socket head geometry or higher strength grades, leading to under- or over-tightening. Our chart is validated for DIN 912 / ISO 4762 cap screws.

📌 Do you provide a certificate of conformance with each batch?

Yes. Every shipment includes a mill certificate (EN 10204 3.1) and a dimensional inspection report. We also offer third-party testing upon request.

📌 What is the minimum order quantity (MOQ) for metric socket head cap screws?

For standard sizes (M4–M20), our MOQ is 500 pcs per size. For custom lengths or special coatings, MOQ starts at 2,000 pcs. We also offer sample orders (50–100 pcs) for qualification.

📌 How do I select the right torque for my application?

Use our metric socket head cap screw torque chart as a starting point. Consider lubrication, joint stiffness, and safety factor. Our technical team can help you calculate the optimal torque for your specific assembly — just send us your joint details.

📌 What payment methods do you accept for international orders?

We accept T/T bank transfer, L/C at sight, and PayPal for sample orders. For established partners, net 30 terms may be available subject to credit evaluation.

📌 How do you handle logistics and shipping costs?

We ship via sea, air, or express (DHL, FedEx, UPS). For orders over $3,000, we offer free sea freight to major ports in Europe and North America. Full tracking provided.

📌 Can I get a free sample before placing a bulk order?

Absolutely. We provide free samples for standard sizes (up to 10 pcs). You only pay the shipping cost. Request yours through the CTA below.

⭐ Real Reviews from Global Buyers

Andreas V.
Procurement Lead, Austria

"The torque chart accuracy is outstanding. We reduced rework by 18% after switching to Boen. Reliable partner."

Maria S.
Operations Manager, Spain

"Fast delivery, consistent quality. Their M10 socket cap screws with black oxide finish perform perfectly in our assembly line."

James R.
Technical Director, UK

"We needed a supplier who could provide full traceability and torque specs. Boen delivered beyond expectations."

✍️ About the Author — David Chen

David Chen is a senior fastener engineer and international trade specialist with 14 years of experience at Boen Fasteners. He has overseen quality systems for over 1,200 B2B shipments to Europe and the Americas, and is a recognized voice in industrial fastening standards. He regularly contributes to ISO/TC 2 discussions on fastener torque specifications.