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M6 Standard Hex Cap Screws Bolts DIN 933 Steel Nickel Fastener
M1.6 to M52 standard DIN933 hex cap screws with grade 4.8 to 12.9 for vast applicaton requests .
Hex cap screw is also known as hex bolt . Normally . it has a hexagonal head with chamfer edges for hex socket wrench or spanner rotating during operation , machine thread style is fine or course and the threaded length is about 2/3 of total shaft length for the lengths over 70 mm .
Full Specifications
We offer hex cap screws from M1.6 to M52 ( thread diameter ) and max length is up to 350 mm .
DIN933/GB5783-86/ISO4017
| M | k | s | e |
| 1.6 | 1.1 | 3.2 | 3.41 |
| 2 | 1.4 | 4 | 4.32 |
| 2.5 | 1.7 | 5 | 5.45 |
| 3 | 2 | 5.5 | 6.01 |
| 3.5 | 2.4 | 6 | 6.58 |
| 4 | 2.8 | 7 | 7.66 |
| 5 | 3.5 | 8 | 8.79 |
| 6 | 4 | 10 | 11.05 |
| 7 | 4.8 | 11 | 12.12 |
| 8 | 5.3 | 13 | 14.38 |
| 10 | 6.4 | 17 | 18.9 |
| 12 | 7.5 | 19 | 21.1 |
| 14 | 8.8 | 22 | 24.49 |
| 16 | 10 | 24 | 26.75 |
| 18 | 11.5 | 27 | 30.14 |
| 20 | 12.5 | 30 | 33.53 |
| 22 | 14 | 32 | 35.72 |
| 24 | 15 | 36 | 39.98 |
| 27 | 17 | 41 | 45.2 |
| 30 | 18.7 | 46 | 50.85 |
| 33 | 21 | 50 | 55.37 |
| 36 | 22.5 | 55 | 60.79 |
| 39 | 25 | 60 | 66.44 |
| 42 | 26 | 65 | 71.3 |
| 45 | 28 | 70 | 76.95 |
| 48 | 30 | 75 | 82.6 |
| 52 | 33 | 80 | 88.25 |
Materials
The property class for hex cap screws involve 4.8 ,6.8 ,8.8 ,10.9 and 12.9 , different classes different material to be taken .
Stainless steel : SUS 201, SUS 304 ,SUS 316 , SUS 416 ,SUS 430 and SUS 420 ( above grade 8.8 )
Carbon steel : 1008 , 1010 , 1018 , 1022 , 1035 , 1045 , SCM 435 and 40CRO ( grade 4.8 to 12.9 )
Aluminum : 2024 , 6061 and 7075 (Below grade 4.8 )
Brass : CuZn35 , CuZn37 , CuZn40 , CuZn37Pb1 and CuZn39Pb1 ( Below grade 4.8 )
Note : Aluminum and brass material are for quite light-load .
Finish
| Description | Charicteristic |
| Zinc | Various color can be choosed and perfect on anti-corrosion |
| Nickel | Make the surface of the screws more bright and hardened and the performance of screws will be improved |
| Polish | Improving the brightness of surface but is inferior is not as zinc in anti-corrosion |
| Tin | it is very perfect to be anti-rust , and widely used to components |
| Brass | It is usually used with Nickel for more good anti-corrrosion. |
| Dacromet | Is used for screws with big sizes and can stop screws to be rusted long time even under bad surroundings . |
| Passivation | A little dark on the surface , good corrosion resistance |
Applications
Hex cap screws are widely used to different areas for industry and agricultures
Aerospace
Vessel
Trucks and cars
Official items
Furniture
Building
Railway
Industrial machines
