#4-40 Button Head Socket Cap Screws, Alloy Steel Thermal Black Oxide, SAE Coarse
This listing is for new Alloy Steel #4-40 Button Head Socket Cap Screws with Thermal Black Oxide coating. Available in 1/8″ to 1-1/4″ lengthsPackage quantities available in either 10, 20, 50 and 100 pieces. Diameter : #4Thread Pitch : 40 TPI – UNC / Coarse (Standard) ThreadDrive : 1/16″ Hex Key – Available hereType : Button Head Socket Cap ScrewMatching Nut : #4-40 Available here System of Measurement : Inch / SAEMaterial : Alloy Steel with Thermal Black OxideSpecifications : ASME B18.3 / ASTM F879