Zinc Coated Steel Flat Countersunk Head Self Drilling Screws with 2 Wings for Wood to Sheet Metal
Shanghai Monsun Technology Co., Ltd.- Material：Carbon Steel
- Type：Countersunk Head
- Groove：Cross
- Connection：Common Bolt
- Head Style：Counter Sunk Bolt
- Standard：DIN, GB
Base Info
- Model NO.：MS0226-83
- Grade：12.9
- Colour：White,White-Blue,Black
- Delivery Period：30days,45days,60days,Follow Customer Wishes
- Transport Package：Bulk, Bag, Box, Plastic Barrel
- Specification：M3.9- M6.3
- Trademark：OEM
- Origin：Zhejiangchina
- HS Code：731814
- Production Capacity：60000tons,Year
Description
These Self Drilling Screws are designed for wood and steel material combination.
A. Wings
B. Timber
C. Metal substructure
1. The wings behind the drill head, ream up a clearance hole in the timber, which is of larger diameter than the screw thread.
2. The wings are designed to shear off as they strike the substructure.
3. The screw drills its own core hole into the substructure and forms a thread so that the timber will be fastened to the substructure. The ribs under the head trimming the drilled hole for a clean countersink.
