hexagon head self-drilling Screw
Wuhan Xinquan Hardware Co., Ltd. [China] 
hexagon head self-drilling Screw 1. hardened drill point 2. with/without seal washer 3. zinc/yellow zinc/HDG finish
Heagon Head Self-drilling Screw:
1)with material of ordinary carbon steel and stainless steel;
2)surface treatment of galvanized ,hot galvanized and dacrotized are available;
3)convenient and efficient ,collection can be completed together with drilling.
| Screw Thread Specs | Screw Thread Specs | ST3.5(6#) | ST3.9(7#) | ST4.2(8#) | ST4.8(10#) | ST5.5(12#) | ST6.3(14#) |
| De | Max | 8.3 | 8.3 | 8.8 | 10.5 | 11.0 | 13.2 |
| De | Min | 7.6 | 7.6 | 8.1 | 9.8 | 10 | 12.2 |
| K | Max | 3.45 | 3.45 | 4.3 | 4.45 | 5.45 | 6.45 |
| K | Min | 3.2 | 3.2 | 4 | 4.15 | 5.15 | 6.15 |
| S | Max | 5.5 | 5.5 | 7 | 8 | 8 | 10 |
| S | Min | 5.32 | 5.32 | 6.78 | 7.8 | 7.78 | 9.78 |
| L | 19MM-250MM |
hexagon head self-drilling Screw
