Jiaxing Haina Fastener Co.,Limited
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drive Hot Dip Galvanized Hex Head Roofing Self Drilling Screw and Washer
Description
The properties of drilling screw : 1) Exact forging standard of knife edge and high hardness of surface make it easy to drill. 2). The Special technology treatment of the surface makes the product anti-corrosion , antirust and durable. 3) Using the advanced technology to control the core hardness, avoiding rupture effectivity,
Hex Washer (Unslotted) Head Self Drilling Screws (Zinc-Plated Steel) are designed for use in metal applications. Like self tapping screws, self drilling screws cut threads while being installed. A self drilling screw, however, has a notched point that acts as a drill point and therefore does not require a pre-drilled hole before installing. The generic name for these screws are Self Drilling,
Specification
| Name | drive Hot Dip Galvanized Hex Head Roofing Self Drilling Screw and Washer |
| Size | #6-20 |
| Sample | Free |
| Material | Carbon Steel, Stainless steel Alloy Steel,etc |
| Finish | Polish,Plain,Zinc-Plated,Blue White Zinc,HDG, Dacromet ,et |
| Packing | Standard export packing or According to customer's requirement |
| Origin | Jiaxing,zhejiang,China |
| Delivery | 3-20days |
| Port | Ningbo or Shanghai |
| Web | www.hainafastener.com |
Production Process
1.Wire Drawing Production Process
Coiling -Roughing-Spheroidizing-Purifying- Finished Product Wire
Wire drawing : pulling the raw wire till the diameter we need.
2.Screw Molding
Heading - threading
3. Heat treatment-Electroplating-packing
