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Zinc Plated Color Painted Head Self Drilling Screws and EPDM Washer
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
Zinc plated C1022A Painted Hex head with EPDM Washer Self Drilling Screws
According to the material can be divided into: steel 1022 a, 410
stainless iron, stainless steel 304
1. Carbon steel drlling screw, 1022 a, standard heat treatment of
steel can be used as the drlling screw production material, heat
treatment after surface hardness HV560-750, the core hardness
HV240-450. The general surface treatment is easy to rust, high
hardness, low cost.
2. Stainless iron drlling screw, 410, heat treatment, rust
resistance is better than carbon steel. Worse than stainless steel.
3. Drlling screw, stainless steel 304, do not do heat treatment,
antirust capability, low hardness, high cost, can only drill
aluminum plate, board, plastic board.
4. Composite drlling screw drill bit is made from carbon steel,
screw thread and the head by combined process of 304 stainless
steel production.
| Product Name | Zinc Plated Color Painted Head Self Drilling Screws and EPDM Washer |
| Size | #4-#12,1/8"-3'' |
| Head Type | Hex head |
| Washer | EPDM washer , plastic washer |
| Material available | 1.Stainless Steel: SS304, SS316, SS410 2.Steel:C1006, C1022,C10B21 |
| Standard | ISO,GB,DIN,JIS,ANSI,BSW |
| Sample | Free samples provided. |
| Lead time | about 15 days after payment confirmed. |
| Payment terms | T/T, Western Union, PayPal etc. |
Application:
Self-drilling screw with tapping screw is different from common self-tapping screw ordinary self tapping screw in connection, must be made via drilling (drill tap) and tapping two process (including fastening connection).And self-drilling screw with tapping screw, when connected, it incorporates the two process drilling and tapping a complete.It with screws at the front of the first drilling bit, then using screw tapping (including fastening connection), save construction time, improve the construction efficiency.
Advantages:
1. Haina Fastener only provides high quality all kinds of fasteners and best price.
2. All DIN or GB and part ANSI/ASME Standard stainless steel fasterners are in stock.
3. Part Carbon steel nuts are in stock,Like hex nut,weld nut,cage nut,cap nut,flange nut ,wing nut.
4. Stainless steel and carbon steel big size bolts and nuts are Super Quality and Competitive price.
