Active Member
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[China]
Address: Rongda Industrial Park, Xinhua Road, Wangting Town, Suzhou City, China
Contact name:
Suzhou Crever Fastener Co., Ltd |
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Tapping Thread Tek Self Drilling Screws With Rubber Washer , Hex Washer Head Screws
1. Descriptions:
Self Drilling Screws are installed with a standard power driver…each screw drills its own hole, taps its own threads, and then fastens the material…all in a single operation. Frequently used with sheet metal as well as stainless steel, aluminum, brass and plastic. Threads are coarse. Length is measured from under the head for Hex, Hex Washer, and Pan head styles. For Flat Wafer Head, length measurement includes head.
2. Specifications:
1. Name: DIN7504K hex washer head self drilling tek screws, roofing screws
2. Grade: C1018, C1022, SUS201,SUS410,SUS304,SUS316,A2-70,A2-80,A4-80
3. Size: 3.5mmx10mm--6.3x200mm
4. Standard: DIN7504K
5. Certification: ISO9001, SGS, CTI, ROHS
6. Packing: bulk packing, small box packing, plastic bag or box packing
7. Washer: black rubber washer, EPDM bonded washer
8. End point: drilling point, PT1--PT6
Product Name | hex washer head self drilling screw, roofing screw yellow zinc |
Material | stainless steel, carbon steel, alloy steel, brass and so on |
Color | yellow zinc, black phosphate, gray, white zinc, HDG, ruspert,
nickel and so on |
Standard | DIN GB ISO JIS BA ANSI |
Grade | C1018, C1022, SUS201, SUS304, SUS316, A2-70, A2-80, A4-80, 4.8 6.8
8.8 10.9 12.9 |
Sizes | #6x10mm---#14x200mm, 3.5x10mm--6.3x200mm |
Thread | full thread, partical thread |
Drive | philips, pozi, socket, hex, square, solloted, combined |
3. Applications:
Hex Washer Head Self drilling screws, also known as Tek screws, are fasteners with a special pointed end style that allows them to penetrate thin materials without a starting or pilot hole. Also known as self tapping screws or self drilling bolts, they cut or form threads to engage with the mating material.
4. Testing Data:
| Mechanical properties Tests | |||||
| drill point | sizes | torque strength kgf | tensile strength kgf | shear strength kgf | |
| SUS304 and SUS316 | SUS302 | ||||
| No.3 point | #8 (4.2) | 45 | 36 | ||
| #10 (4.8) | 52 | 42 | |||
| #12 (5.5) | 84 | 68 | 810 | 620 | |
| #14 (6.3) | 132 | 900 | 710 | ||
| No.5 point | #12 (5.5) | 84 | 68 | 920 | 650 |
| #14 (6.3) | 132 | 1050 | 745 | ||
5. Screws material composition:
| stainless steel chemical composition | ||||||||
| Material | C max | Si max | Mn max | P max | S max | Ni max | Cr max | Mo max |
| SUS201 | 0.15 | 1 | 5.5-7.5 | 0.06 | 0.03 | 3.5-5.5 | 16-18 | |
| SUS304 | 0.08 | 1 | 2 | 0.045 | 0.03 | 8.0-10.0 | 18-20 | |
| SUS304L | 0.03 | 1 | 2 | 0.045 | 0.03 | 8.0-12.0 | 18-20 | |
| SUS305 | 0.12 | 1 | 2 | 0.045 | 0.03 | 10.5-13.0 | 17-19 | |
| SUS316 | 0.08 | 1 | 2 | 0.045 | 0.03 | 10.0-14.0 | 16-18 | 2.0-- 3.0 |
| SUS316L | 0.03 | 1 | 2 | 0.045 | 0.03 | 10.0-15.0 | 16-18 | 2.0-- 3.0 |
| SUS410 | 0.15 | 1 | 0.03 | - | 11.5-13.5 | |||
| SUS420 | 0.26-0.4 | 1 | 0.03 | - | 12-- 14 | |||
6. Advantages:
7. More pictures:
DIN7504K HWH SELF DRILLING SCREW, YELLOW ZINC
