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Hardware & tools
DIN603 Stainless Steel Carriage Bolts
DIN603 carriage bolt, also known as coach bolt, is one of the most popular standard fasteners for structural and outdoor fastening applications. It is equivalent to ISO 8677 and GB/T 14 standard, widely recognized and accepted in European, African, Southeast Asian and global engineering projects.
SupplierMD Fastener Crop.www.md-fastener.com
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About this product
Product information from the supplier.
Material | SS304 ,SS316,SS316L |
Grade | A2-70,A4-70 |
Standard | DIN603,ISO8677 |
Type of Head | Round head |
Surface Treatment | Polishing |
Diameter | M5-M20 |
Length | 16-200MM (Customized as your need) |
Testing equipment | Automatic Optic Inspector,Projecting Apparatus,Salt Spray Test,Hardness/Tensile Machine |
Certification | SGS,RoHS,Material Certication,PPAP |
Sample | Accepted,we will send samples for your approval |
Package Description | Small box ,Carton ,bag ,small plastic bag and pallet |
Delivery Term | EXW,FOB,CIF,CNF |
Lead Time | Samples10- 15workdays,Mass productions 15-20 workdays after payment received. |
Payment Term | T/T, Paypal,Cash |
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DIN603 Carriage Bolt / Coach Bolt – Round Head Square Neck Bolt
DIN603 carriage bolt, also known as coach bolt, is one of the most popular standard fasteners for structural and outdoor fastening applications. It is equivalent to ISO 8677 and GB/T 14 standard, widely recognized and accepted in European, African, Southeast Asian and global engineering projects.
Product Feature
DIN603 carriage bolt features a smooth large dome round head and a square neck under the head. The unique square neck design effectively prevents the bolt from rotating during nut tightening, providing stable locking performance and greatly improving installation efficiency. The smooth curved head offers a safe, burr-free surface, suitable for exposed installation scenarios.
Material & Grade
We supply full series materials and strength grades to meet different working conditions:
• Stainless Steel: A2-70 (304), A4-70 (316) — excellent rustproof and corrosion resistance, ideal for outdoor, marine and humid environments
• Carbon Steel: 4.8, 8.8 grade — high tensile strength for construction, timber and mechanical fastening
• Surface finish: plain, zinc plated, hot-dip galvanized, black oxide
Size Range
Standard metric sizes from M5 to M20
Length range: 16mm – 200mm
Both partial thread (standard) and full thread can be customized according to customer requirements.
Application
DIN603 carriage bolts are widely used for:
• Wooden structure construction & timber connection
• Fence, guardrail and outdoor furniture installation
• Solar bracket and strut channel fixing
• Agricultural machinery, playground equipment and general industrial assembly
Our Advantages
1. Strictly produced according to DIN603 standard, precise dimension and stable mechanical performance
2. Complete size inventory, fast delivery for regular sizes
3. Support OEM & customized length, special surface treatment
4. Provide official material test certificate (MTC) for bulk orders
DIN603 carriage bolts are cost-effective, highly versatile and reliable fasteners, serving as the preferred solution for permanent and stable structural fastening worldwide.
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MD Fastener Crop.
