Сохранить в закладки 1601205609836:
Product name | hex head drilling roofing screws with rubber washer |
Size | 5/16 m8,As per your request |
Standard | ISO,GB,DIN,BS,ANSI,JIS,Nonstandard. |
Grade | 4.8/ 6.8/ 8.8/ 10.9/ 12.9 |
Available Material | Carbon steel,Stainless steel 301/304/316, alloy steel,aluminum,copper,etc. |
Surface Treatment | galvanised,Zn-Plated,Ni-plated,Black Anodize,etc. |
| OEM / ODM / customized service provided |
Quality control | ISO standard,100% Whole range inspection through the production |
Certificate | ISO9001,ISO14001, IATF16949,ROHS |
After-sales Service | We will follow up every customer and solve all your problems satisfied after sales |
![]() | Do you need a pilot hole for self drilling screws? While self-tapping screws will tap a hole into a soft material, self-drilling screws are capable of drilling a hole into anything from metal to wood. This key difference is self-drilling screws have a tip like a drill bit, so they do not need a pilot hole. |
What is the difference between self drilling and self tapping screws? Self-drilling screws eliminate the need for a pilot hole, but can tap as well. Self-tapping screws tap their own threads, but cannot drill through metal and require a pilot hole. These screws are not interchangeable, and mixing up the two can cause many headaches or possible failures in the field. | ![]() |
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