.Sheet Metal Screw, #10 x 2-1/2 in, Painted 18-8 Stainless Steel Hex Head Combination Drive, 8 PK Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood.
Shoulder Screw, 24 (Coarse) Thr Sz, 3/8 in Thr Lg, 3/8 in Shoulder Lg, Steel, 5 PK Shoulder bolt specifications call out the shoulder diameter, shoulder length, and threaded diameter; the threaded length is fixed, based on the threaded diameter, and usually quite short..