Socket Head Allen Bolt Dimensions & Head Bolt Dimensions | Supplier
Tired of costly sourcing delays and inconsistent bolt quality? We deliver factory-direct socket head bolts with verified dimensions, full traceability, and 30% lower total cost – trusted by 30+ countries.
Every year, procurement teams waste $47,000+ on rejected shipments, rework, and emergency sourcing – all because socket head allen bolt dimensions didn't match the spec sheet. When your assembly line stops, every minute costs money.
💡 The solution isn't just "any bolt" – it's precisely dimensioned socket head bolts from a supplier who treats your spec as law.
Every dimension is verified with ±0.02 mm tolerance using digital CMM equipment. We supply both metric (ISO 4762 / DIN 912) and inch (UNC/UNF) series.
12.9 / 10.9 / 8.8 grade alloy steel, 304/316 stainless
Head Ø, height, hex socket size, thread length, chamfer
Black oxide, zinc plating, hot-dip galvanized, Dacromet, PTFE
Bulk, boxed, poly-bag with barcode – your branding
Grade 12.9 socket head bolts used in heavy machinery frames and structural steel connections. Our M16 bolts deliver 40 kN tensile strength – exceeding ASTM A574 requirements.
Zinc-plated M8–M12 socket head bolts resist corrosion in tractor assemblies and harvesters. 10.9 grade ensures reliability under vibration.
Precision M6–M10 socket head bolts for battery pack enclosures and motor mounts. 316 stainless available for thermal management systems.
Hot-dip galvanized socket head bolts for wind turbine towers and solar tracker structures. Salt spray tested to 720+ hours.
Serving 30+ countries across Europe, Americas, and Southeast Asia
🏭 Production Line
🔬 QC Lab
📦 Export Warehouse
👥 Export Team🏢 Our Partners & Clients
+ 20 more
ISO 9001
CE
UL
FCC
💬 Client Inquiry
💬 Order Confirmation
💬 After-Sales Support
"We switched to Boen for M8 socket head bolts and reduced our reject rate from 4.2% to 0.3%. The dimensional report matches every batch. Saved 28% on total cost."
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"Boen's socket head bolt dimensions are exactly to DIN 912. The 12.9 grade black oxide finish is flawless. Delivery to Hamburg in 8 days – impressive."
⭐⭐⭐⭐⭐
"The custom packaging with our SKU barcodes saved us 6 hours of warehouse labor per week. Fastener quality is consistent. Our go-to supplier for socket head bolts."
⭐⭐⭐⭐⭐A: M6 x 1.0 thread, head diameter 10.0 mm, head height 6.0 mm, hex socket size 5.0 mm, thread length 18 mm. Tensile strength min 5,200 N. We supply with full dimensional certificate.
A: Yes. We offer OEM/ODM services for under-head length, head diameter, socket depth, and thread length. Minimum order quantity is 5,000 pcs per size. Send your drawing for a rapid quote.
A: We hold ±0.02 mm on head diameter and ±0.05 mm on length. All dimensions are verified with digital CMM and documented in the inspection report per batch.
A: ISO 9001 quality system, 100% dimensional inspection on critical parameters, 3rd-party testing available (SGS, TÜV). We provide COC (Certificate of Conformance) with every shipment.
A: Standard sizes: 7–15 days. Custom dimensions: 20–25 days. Express shipping (DHL/FedEx) to USA/Europe in 5–8 days. Sea freight: 25–35 days.
A: Yes. We provide free samples for qualified buyers. You pay only shipping. Request up to 10 pieces per size for dimensional and fit testing.
A: T/T bank transfer (30% deposit, 70% before shipment), L/C at sight, PayPal for small orders (< $2,000). We also accept Alibaba Trade Assurance.
A: Email your RFQ to shuan@fastenboen.com or mary@fastenboen.com with size, grade, quantity, and coating. We reply within 4 hours with a detailed commercial offer.

Li Wei is a Senior Fastener Engineer at Handan Boen Fastener with 14 years of experience in socket head bolt design and international standardization. He has overseen 500+ B2B shipments and authored technical training for procurement teams across 12 countries. His expertise ensures every dimension we publish is production-verified.
📧 liwei@boenfasteners.comLimited-time: Free sample kit (10 pcs) with every first order above $500. Factory-direct pricing with full dimensional certification.
✅ Risk-free: Free samples • Dimensional report • 100% satisfaction guarantee • ISO 9001 certified