Bolts
Hex Bolts
Hexagonal Head Bolts / 六角螺栓
Our hex bolts are the most widely used fasteners in industrial and construction applications. Manufactured through precision cold heading, they feature a standard hexagonal head for wrench or socket tightening. Available in grades from 4.8 to 12.9, with both full-thread (DIN 933) and partial-thread (DIN 931) options, in carbon steel, alloy steel, and stainless steel. Surface treatments include zinc plating, black oxide, hot-dip galvanizing, and Dacromet to suit different environmental requirements.
Key Features
Cold-headed for superior tensile strength and grain flow
Available in grades 4.8, 8.8, 10.9, and 12.9
Full thread (DIN 933) and partial thread (DIN 931)
Comprehensive size range M4 through M24
Multiple surface finishes for corrosion protection
Manufactured to DIN, ISO, and GB standards
Technical Specifications
| Product Name | Hex Bolts (Hex Head Bolts) |
| Chinese Name | 六角螺栓 |
| Brand | ZCM / Zhongchun |
| Standards | DIN 931, DIN 933, ISO 4014, ISO 4017, GB/T 5782, GB/T 5783 |
| Grade | 4.8 / 8.8 / 10.9 / 12.9 |
| Material | Carbon Steel (1035, 1045), Alloy Steel (SCM435, 40Cr), Stainless Steel (304, 316) |
| Size Range | M4 - M24 |
| Length Range | 8mm - 300mm |
| Thread | Full Thread (DIN 933) / Partial Thread (DIN 931) |
| Head Type | Hexagonal |
| Surface Treatment | Plain, Zinc Plated (White/Yellow/Blue), Black Oxide, HDG, Dacromet, Geomet |
| Packaging | Carton + Pallet, or per customer request |
| MOQ | Contact us for details |
| Lead Time | 15 days for standard orders |
Applications
Hex bolts are the most versatile and commonly used fasteners across virtually every industry.
Structural steel construction and building frames
Automotive and vehicle assembly
Heavy machinery and equipment manufacturing
Bridge and infrastructure engineering
Agricultural and farming equipment
Mining and quarrying machinery
Petrochemical plant piping and flanges
General industrial maintenance and repair
Interested in Hex Bolts?
Send us your specifications for a competitive quote. Standard orders delivered in 15 days.