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| Product Name: | Hex. Bolt | Standard: | DIN931 |
|---|---|---|---|
| Head Type: | Hexagon Head | Thread: | Half Thread |
| Material: | Stainless Steel | Size: | M3-M39 |
| High Light: | Half Thread Hex Head Bolt, Hex Socket Head Bolt SS304, M8 Stainless Hex Head Bolts | ||
SS304 Hex.Head Bolts Half Thread In Standard DIN931 / M8 hex head long bolt
DIN931 hexagonal bolts, also known as external hexagonal bolts, are fasteners consisting of two parts: a hexagonal head and a screw with external threads, which are generally used in conjunction with nuts and are commonly used to fasten connections between two parts with through holes.
Hex. bolts must be marked with the manufacturer's identification mark and the sex grade mark, preferably with a raised or concave mark on the top surface of the head, or with a concave mark on the side of the head.
For all performance grades of hexagonal bolts must be marked, stainless steel hexagonal bolts logo should also include the steel group
The performance grade of stainless steel :
| Material | Chemical composition% | ||||||||
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | |
| A2 | 0.1 | 1 | 2 | 0.05 | 0.03 | 15-20 | - | 8-19 | 4 |
| A4 | 0.08 | 1 | 2 | 0.045 | 0.03 | 16-18.5 | 2-3 | 10-15 | 1 |
| C3 | 0.17-0.25 | 1 | 1 | 0.04 | 0.03 | 16-18 | - | 1.5-2.5 | - |
| C4 | 0.08-0.15 | 1 | 1.5 | 0.06 | 0.15-0.35 | 12-14 | 0.6 | 1 | - |
Marking method of DIN931 hexagonal bolts:
Example of marking of DIN931 external hexagon bolts.
The hexagon head bolts with thread size d=M12, nominal length L=80, performance grade A4-80 and product grade A are marked as
SUS316 hexagon bolts DIN931-M12*80-A
Product photo:
Application:
Hexagonal bolt connection, simple assembly, easy disassembly, high efficiency, and wide application, mainly used in various mechanical equipment, electronic products, communication equipment, furniture equipment, construction industry and other industries of production, installation, maintenance, etc..
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