1/4x1-1/2 hwh s mt screw. Hex washer head. Hex head slotted. Packed 100-pieces per package. Thread Diameter: #14, Length: 1-1/2", Drive Type: Slotted Hex, Head Type: Hex Washer, Pkg Qty: 100 No. 70343: Thread Diameter: #14, Length: 2", Drive Type: Slotted Hex, Head Type: Hex Washer, Pkg Qty: 100