Ningbo Haitian Fastener Industry Co., LTD.
A professional manufacturer for screws, bolts and nuts.

Screws > Machine Screw, Din931, Din933
- DIN 931 Hex Bolt - Part Thread
- Grade: 8.8 / 10.9 / 12.9 / 4.8 / 6.8
- Finish: Black, ZP, YZ or others
- Spec.: M5 upto M110

- DIN 933 Hex Bolt - full Thread
- Grade: 8.8 / 10.9 / 12.9 / 4.8 / 6.8
- Finish: Black, ZP, YZ or others
- Spec.: M5 upto M110
