Uxcell #12 x 3-9/16" Self Drilling Screws, 50pcs Roofing Screws with EPDM Washer M6 x 31mm high hardness and excellent response

high hardness and excellent response

Head Diameter: 7

helps the driver know the obstacles when parking

Diameter: 15cm/5

Mini round cylinder

Uxcell #12 x 3-9/16" Self Drilling Screws, 50pcs Roofing Screws with EPDM Washer M6 x 31mm high hardness and excellent responseDescription: 1. Material: Both the screw and the metal washer are made of carbon steel, a zinc plated surface finish, which is corrosion resistant; the black washer is made of EPDM, which is wear resistant and oxidation resistant. 2. Advantages: The hex washer head has a flange with an EPDM rubber washer on the bottom to prevent leaks, loosening and damage to mating surfaces. The underside of the hex head provides a large flat bearing surface that