Self-tapping is the ability of a screw to advance when turned, while creating its own thread.[ashokfasteners.com] This ability is sometimes created by a gap in the continuity of the thread on the screw. These edges cut a thread as the screw is driven in to the material. The cutting edge drills away the material, leaving a hole for the screw to go into.Chan Chin C. has established since 1987 and engaged in OEM business initially. Thereafter, the business of Chan Chin C. has been lead to 100% export market successfully from 1994 till now. The major products of the company are all kinds of screws such as roofing, self tapping, drywall, chipboard, wood, thread cutting, special cutting, Euro, furniture, and <strong>self drilling screws</strong>, as well as washers.<br /><br />We accept customized order and supply based on small quantity, multiplicity, small packaging and DIY special packaging. Due to various facilities of Lab equipments, we could control each shipment quality fully by our inspectors. If you are interested in our self drilling screws, please feel free to contact us anytime.<br /><br />Followings are some features of this item:<br /><br />1. Self drilling screws: hex washer head flange with PVC washer or NEO washer.<br />2. Pan head DIN 7504 N.<br />3. CSK head DIN 7504 P.<br />4. Hex washer DIN 7504 K.<br />5. Large wafer head.<br /><br />
Hex washer head with bonded washer
Self-Drilling Screws with Modified Truss (Button) Head
DIN7504N Self drilling Screws Pan Head Phillips.<BR>Zinc plated with painted head.
Self drilling screw with wings flat head.
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