DIN / ANSI Standard Chipboard Wood Screws , Hex Washer Self Drilling Screw

Steel Hex Self Drilling Screw With EPDM Washer ,DIN7504K, Zinc Plated,Hex Head,C1022 Hardened, Heat Treatment

1. Product Description

Self drilling screws, Drlling tapping self drilling screw, say again "drlling screw" "drlling screw" "self drilling screw," the north is also known as "dovetail screw".

Self Drlling tapping screws" say again "drlling screw" "drlling screw" "self drilling screw," the north is also called "dovetail screw".English: the SELF DRILLING SCREWS.Its execution standard GB/T 15856.1-2002. German standard DIN7504N - 1995, JIS B 1124-2003.

This screw with drilling the tail tip named as twist drill, screw during assembly to drill out the center by Confucius, and then with the aid of the nearby threaded portion on the carrier hole tapping squeeze cut out with the thread, so called the drilling and tapping screws.

Self Drlling screw according to standards can be divided into: GB/T, DIN, JIS and ISO international standards.

A. according to the purpose and shape can be divided into the following categories:

1. The Cross slot pan head self-drilling screw with tapping screw, Cross recessed pan head drilling screws with tapping screw thread, executive standard: GB/T 15856.1 2002

2. Philips countersunk head self-drilling screw with tapping screw, Cross recessed countersunk head drilling screws with tapping screw thread execution standard: GB/T 15856.2 2002

3. The philips oval head self-drilling screw with tapping screw, Cross recessed countersunk head drilling screws with tapping screw thread execution standard: GB/T 15856.3 2002

4. Hex flang self-drilling screw with tapping screw, Hexagon flange head drilling screws with tapping screw thread execution standard: GB/T 15856.4 2002

5. Hexagonal protruding from drilling and tapping screws. Hexagon washer head drilling screws with tapping screw thread

2. Specification

 1) Materials: Carbon Steel

 2) Process Method: Cold forging, hot forging 

 3) Size: All frequent sizes

 4) Standard: DIN,ANSI

 5) Surface:  Zinc Plated, Plain

 7)  Packing:  Inner packing with strong plastic bag, carton finally. Packing dimension would be according to the products dimension and quantity.

 8)  Delivery terms: FOB / CFR / CIF etc.

 9) Delivery Time: 60-70 days after get the deposit.

3.Application

Machanical equipments, new energy, electric products, fluid equipment, engineering equipment etc

4.More Pictures