The winged drill screw has a self-tapping thread that is firmly locked. The special wing structure can effectively expand the hole during the drilling process and prevent the thread from biting, completing the operation smoothly and efficiently.
The winged drill screw has a self-tapping thread that is firmly locked. The special wing structure can effectively expand the hole during the drilling process and prevent the thread from biting, completing the operation smoothly and efficiently.
| Material | Carbon steel |
| Head type | Countersunk head with ribs, countersunk head |
| Hardness | Heat treatment strengthened |
| Thread size | Length | ||||||
| 3.5(#6) | 13,16,19,25,32,38mm (1/2"~1-1/2") |
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| 4.2(#8) | 19,25,32,38,45,50mm (3/4"~2") |
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| 4.8(#10) | 19,25,32,38,45,50,63,75mm (3/4"~3") |
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