8-32 x 1/4 Phil Pan Taptite Alternative Thread Rolling Screw Fully Thread Black Oxide & Wax KPM410 They are made of steel

They are made of steel and have a black oxide finish with a wax coating

It is a grade 5 nut

These 6-18 x 7/8 Phillips flat self-tapping screws are Type A screws

this locknut features a nylon insert that creates a positive lock between the nut and bolt

8-32 x 1/4 Phil Pan Taptite Alternative Thread Rolling Screw Fully Thread Black Oxide & Wax KPM410 They are made of steelThe 8 32 x 1 4 Phil Pan Taptite Alternative Thread Rolling Screw Fully Thread Black Oxide & Wax is a versatile and durable screw designed for a wide range of applications. It features a Phillips pan head for easy driving and a sharp point that allows it to penetrate materials quickly and easily. The thread rolling design creates strong, permanent threads in metal, plastic, and wood, eliminating the need for tapping or drilling. The black oxide and wax