#4-40 Socket Head Cap Screws, Alloy Steel w/ Black Oxide, US SAE Coarse Thread
#4-40 Socket Head Cap Screws. These take a hex / allen key to drive and are made from alloy steel with Thermal Black Oxide coating. Available in 1/8″ to 1″ lengthsPackage quantities available in either 10, 20, 50 and 100 pieces. Diameter : #4Thread Pitch : 40 TPI – UNC / Coarse ThreadLength : Please select from drop down menu above.Drive : 3/32″ Hex Key – Available hereType : Socket Head Cap Screw (SHCS)Matching Nut & Washers : #4-40 – Available hereSystem of Measurement : InchMaterial : Alloy Steel with Thermal Black Oxide CoatingSpecifications : ANSI/ASME B18.3, ASTM A574