M12 Bolt & M12 Fine Thread Bolt M12 Through Bolts M12 x 1.25 Bolt | Supplier
M12 Bolt & M12 Fine Thread Bolt M12 Through Bolts M12 x 1.25 Bolt | Supplier
Premium M12 Bolt & Fine Thread Fasteners โ Factory Direct, Engineered for Global Industry
M12 fine thread bolt, M12 through bolts and M12 x 1.25 bolt solutions that cut procurement costs by 22โ37% while meeting ISO, DIN, and ASTM specs.
๐ฏ Trusted by procurement teams at Siemens, COSCO, CRCC, Gazprom and 200+ OEMs.
๐ญ 12,000 mยฒ production facility ยท 150+ skilled workers
Why 63% of procurement teams overpay for M12 bolts
Price volatility & hidden fees
Spot prices for M12 fine thread bolt fluctuated 18% in 2025. Brokers add 12โ25% margin. You pay for uncertainty.
Inconsistent thread quality
A M12 x 1.25 bolt with poor pitch control causes assembly line stoppages. One batch rejection costs $4,000+ in downtime.
Long lead times & stockouts
Standard lead times for M12 through bolts from Europe: 8โ12 weeks. We ship 70% of orders in 15โ25 days.
Compliance & documentation gaps
Missing EN 10204 3.1 certificates or incorrect batch numbers delay customs. We provide full traceability on every m12 bolt order.
โWe switched to Boen and cut our M12 bolt spend by 31% while improving on-time delivery from 72% to 98%.โ โ Senior Procurement Manager, European agricultural machinery OEM
Your Complete M12 Bolt Ecosystem โ From Raw Material to Global Delivery
M12 Fine Thread Bolt โ Precision for High-Vibration Assemblies
Pitch 1.25 mm and 1.5 mm options. Grade 8.8, 10.9, and 12.9 available. Ideal for automotive powertrains, agricultural gearboxes, and construction equipment. Reduced loosening under dynamic loads.
- DIN 960 / DIN 961 compliant
- Surface treatments: zinc-plated, Dacromet, HDG
- 100% thread gauge inspection
M12 Through Bolts โ Full Thread Engagement for Structural Joints
Fully threaded M12 through bolts in lengths from 20 mm to 300 mm. Used in steel-to-steel connections, wind towers, and heavy machinery. Shear strength up to 48 kN (Grade 10.9).
- ASTM A325 / A490 equivalent grades
- Black oxide, zinc-nickel, or plain finish
- Bolt + nut + washer kits available
M12 x 1.25 Bolt โ The Metric Fine Thread Standard
M12 x 1.25 bolt is the go-to for automotive, motorcycle, and precision machinery. Fine threading provides 30% more clamp load compared to coarse thread. We stock in 40+ lengths.
- ISO 8676 / DIN 961 standard
- Heat-treated for fatigue resistance
- OEM packaging with barcode labeling
๐ Technical Specifications โ M12 Bolt Family
| Parameter | M12 Fine Thread Bolt | M12 Through Bolts | M12 x 1.25 Bolt |
|---|---|---|---|
| Pitch | 1.25 mm / 1.5 mm | 1.75 mm (coarse) | 1.25 mm |
| Grade | 8.8 / 10.9 / 12.9 | 8.8 / 10.9 | 8.8 / 10.9 / 12.9 |
| Material | Carbon steel / Alloy steel / Stainless | Carbon steel / Stainless 304/316 | Alloy steel / Stainless 304 |
| Standards | DIN 960, DIN 961, ISO 8676 | DIN 933, DIN 931, ASTM A325 | ISO 8676, DIN 961 |
| Length Range | 20 โ 300 mm | 20 โ 300 mm | 20 โ 250 mm |
๐ Full 3.1 inspection certificates, batch traceability, and PPAP Level 3 available on request.
Automotive
Engine blocks, suspension, chassis
Construction
Steel structures, scaffolding, brackets
Agricultural Machinery
Tractors, harvesters, implements
Energy
Wind towers, solar racks, pipelines
Everything You Need to Know About M12 Bolt Procurement
๐ What is the difference between M12 fine thread bolt and M12 coarse thread bolt?
A M12 fine thread bolt (pitch 1.25 mm or 1.5 mm) has a tighter thread pitch than a coarse thread (1.75 mm). Fine threads provide higher clamp load, better vibration resistance, and finer adjustment. Coarse threads are more forgiving in dirty or soft materials. Choose fine thread for precision assemblies and dynamic loads.
๐ What grades are available for M12 through bolts?
We supply M12 through bolts in Grade 8.8 (medium carbon steel), Grade 10.9 (alloy steel, quenched & tempered), and stainless steel (A2-70, A4-80). Grade 10.9 offers ~48 kN tensile strength and is commonly used in structural steel connections.
๐ Can you provide M12 x 1.25 bolt with custom length and coating?
Yes. We offer OEM/ODM customization for M12 x 1.25 bolt including custom lengths (20โ250 mm), coatings (zinc, HDG, Dacromet, Geomet, PTFE), and head marking. Minimum order quantity for custom specs is typically 5,000 pieces.
๐ What is the typical lead time for M12 bolt orders?
For standard m12 bolt sizes and grades, we ship within 15โ25 days from order confirmation. Custom orders (special coatings, lengths, or packaging) typically require 25โ35 days. Express delivery available for urgent orders.
๐ Do you provide quality certificates and traceability?
Absolutely. Every shipment of M12 fine thread bolt and M12 through bolts comes with EN 10204 3.1 inspection certificates, batch traceability, material mill test reports, and dimensional inspection reports. PPAP Level 3 is available for automotive and aerospace clients.
๐ What payment terms do you offer?
We accept T/T (30% deposit + 70% balance before shipment), L/C at sight, and for established clients, net 30โ60 days upon credit approval. We also accept PayPal and Western Union for small orders. All payments are secured via our company bank account.
๐ How do you handle shipping and logistics for international orders?
We ship via sea freight (FOB/CIF/CNF), air freight, or express courier (DHL, FedEx, UPS). Our logistics team handles all customs documentation, including certificate of origin, bill of lading, and packing list. We offer free storage for up to 2 weeks if you need to consolidate orders.
๐ Can I request free samples before placing a bulk order?
Yes, we offer free samples for M12 bolt, M12 fine thread bolt, and M12 x 1.25 bolt (up to 10 pieces per type). You only pay for shipping. Samples are dispatched within 3โ5 working days.
What Our Customers Say About Our M12 Bolt Solutions
โWe source M12 through bolts for our wind tower projects. Boen's quality is consistent, and their 3.1 certificates are always complete. Saved us 27% compared to our previous German supplier.โ
Senior Buyer, NordicWind Energy
โThe M12 x 1.25 bolt we ordered for our motorcycle assembly line was perfect. Thread fit was excellent, and the zinc-nickel coating passed 720h salt spray test. Highly recommended.โ
Production Manager, MotoItalia S.p.A.
โBoen Fasteners is now our primary supplier for M12 fine thread bolt. Their responsiveness and willingness to customize packaging for our ERP system made a huge difference.โ
Procurement Lead, AgriConstruct Ltd.
With 18+ years in fastener engineering and global sourcing, James has helped over 120 manufacturing companies optimize their bolt procurement. He leads Boen's technical advisory board and regularly speaks at industry events on fastener standards and supply chain resilience.
Ready to Cut Your M12 Bolt Costs by 22โ37%?
Get factory-direct pricing, full traceability, and delivery in as fast as 15 days. No middlemen. No quality compromises.
๐ก๏ธ Risk-Free Guarantee: Free samples up to 10 pcs ยท Money-back guarantee on first order if specs not met ยท 100% inspection certificates included
Handan Boen Fastener Manufacturing Co., Ltd. ยท Hanguang Industrial Park, Yongnian District, Handan, Hebei, China ยท +86 15630072814 / +86 13293070568
Real Results from Real Partners
๐ผ 10+ years of export expertise ยท 150 skilled workers
โ Certified Quality & Compliance
โWe replaced three European suppliers with Boen for M12 fine thread bolts. Saved 34% on unit cost and cut lead time from 9 weeks to 3 weeks.โ
Procurement Director, AgriTech GmbH
โThe M12 through bolts from Boen meet our ASTM A325 spec perfectly. Zero rejects in 6 months. Their PPAP documentation is world-class.โ
Supply Chain Manager, SteelConstruct Ltd.
โWe needed a reliable source for M12 x 1.25 bolt for our motorcycle line. Boen delivered 50,000 pieces ahead of schedule. Quality is consistent.โ
VP Operations, MotoPrecision Inc.