Sheet Metal Screws Pan Head Square Drive Stainless Steel #8 x 3/4 Qty 5000. Sheet metal screws have sharp threads that cut into a material such as sheet metal, plastic or wood. They also make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood. How To Measure Length. CounterSink Head Fasteners : Measured From Top OF Head To Point. Pan Head Fasteners : Measured From Underneath The Head. Hex Head Fasteners : Measured From Underneath The Head. Head Style : Pan Head. Head Diameter : 0.322. Quantity of Fasteners in Package : 5000. Material : 18-8 STAINLESS STEEL. Tracking is provided on ALL Orders. UPS Next Day Air is available, Please inquire for pricing. For YOU, we constantly strive to find ways to improve our performance.