Sheet metal screws: Designed for attaching sheet metallic to sheet steel, wood, or other products, these screws feature sharp tips and threads intended to penetrate metal. They in many cases are made from chrome steel, https://caoimhepzeb154390.fitnell.com/69519888/how-much-you-need-to-expect-you-ll-pay-for-a-good-types-of-screw-heads