#12-14 x 1 Unslotted Indented Hex Washer Head Tek screws w/Bonded Washer, Zinc Plated. These 1" length 5/16" drive Hex Washer Head ZINC PLATED Self-Drilling screws are #12-14 (14 threads per inch) #3 Point. Zinc plated is a plating that is applied electrically to fasteners that prevents oxidation of steel by forming a protective barrier. Pre-assembled 9/16 outside diameter Bonded NEO-EPDM metal backed washer creates leak proof seal. 1000.7 for torsional strength and drill speed. Meets ASTM A 510 for carbon steel manufacturing. Zinc plating meets ASTM B-117 for salt spray corrosion. Meets SAE J78 for performance & dimensional specifications. Each box contains approximately 3,000 screws (37 pounds) Applications Include: Attaching metal to metal, drill capacity. 210, drill speed 2000 RPM. The item "#12 x 1 HWH ZINC PLATED SELF-DRILLING SCREWS withBONDED WASHER 3M Box" is in sale since Wednesday, January 10, 2018. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Nails, Screws & Fasteners\Screws & Bolts". The seller is "fastenerusa" and is located in Modesto, California. This item can be shipped to United States.