Spring Nut For Use With Studs Threaded Screws Finish Phosphate Material Steel For Screw Size #8-32 Thickness 0.017 in System of Measurement Inch Overall Length 1/2 in Overall Width 5/16 in Application For Threaded Screws and Studs Dimensional Standards SAE 1050 Pack Size Small Pack Push Nut Type Flat Steel Spring Nut Rockwell Hardness C40 to C50 Package Quantity 100