Metallic's and Avanti Screw, Inc., prime American manufacturers of fastener products, have always worked to present the latest in fastener technology to our distributors and their contractors/users. Hex Washer Head fasteners have historically only offered three drives-the hex, Phillips and the slot. In 1999, we introduced "The QuaDrive" square, hex, slotted and Phillips, in fourteen of the most popular sizes of sheet metal screws.

Metallics Machine Screw, Combination, Measurement System: Imperial, 1/4-20, 1-1/2 in Overall Length, Steel, Round Head, Zinc Chromate, Phillips®/Slotted Drive, #3 Drive, 0.16 to 0.175 in H x 0.443 to 0.472 in W Head, UNC Thread, Silver

• Specification Sheet https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_1520577338216.pdf

• Slotted and Phillips two drives in one head
• Metallic's was the first fastener company in America to offer a full line of combo's