Some self-tapping screws are also self-drilling, which means that in addition to the thread-forming section there is also a fluted tip much like the tip of a center drill.
Self-drilling screws combine hole drilling, threading and fastener installation into one driving motion (instead of separate drilling, tapping, and installing motions); they are thus very efficient in a variety of hard-substrate applications, from assembly lines to roofing. Some types incorporate a sealing washer, for fastening roofing sheets to purlins.
Self Drilling Screw | |
Standard | DIN / GB / UNC / BSW /JIS etc. ASME B18.6.4 & SAE J78 DIN7504K, DIN7504P,DIN7504N |
Diameter | #4-1/2” |
Length | 10-180mm (3/8”- 7”) |
Material | Carbon Steel / Stainless Steel |
Head type | flat CSK, oval, pan, fillister, truss, hex, hex washer, round, cheese |
Drive type | Phil, slotted, torx, square, phil& slotted combination |
Thread Type | BSD, CSD |
Grade | 2.9, 3.5, 4.2, 4.8, 5.5, 6.3;A2-70 A4-70 A4-80 etc. |
Finish | Zinc Plated(Clear/Blue/Yellow/Black),HDG, PTFE. |
Equipments | Caliper, Salt spraying tester. |
Certificate | ISO9001 ISO14001 ISO45001 SGS |
Supply Ability | 10000 ton per Month |
MOQ | According to customer demand |
Trade Term | FOB/CIF/CFR/CNF/EXW/DDU/DDP |
Payment | T/T, L/C, West Union, Paypal. Etc |
Materials
Steel Alloy: Carbon Steel / Die Steel / etc.
Aluminum Alloy: 5052 /6061/ 6063 / 2017 / 7075 / etc.
Brass Alloy: 3602 / 2604 / H59 / H62 / etc.
Stainless Steel Alloy: 303 / 304 / 316 / 412 / etc.
We handle many other type of materials. Please contact us if your required material is not listed above.
Please let us know the size, quantity, material or grade, surface you need. If it is special and Non-standard products, please provide us the drawing or photos or samples to us in order to further assistance.
Contact: Lynn/Yuri
Phone: +86-15072059381
E-mail: lynnwang@youjitrading.com
Add: Yongnian District, Handan City, Hebei Province