Cap Screw Assortment Socket Head Cap Screw Head Type Standard Number of Pieces 170 System of Measurement Inch Thread Size #10-24 #6-32 1/4 In.-20 3/8 In.-16 5/16 In.-18 #8-32 Screw Size #6 to 3/8 in Overall Length 1/2 in 1 in Number of Sizes 12 Drive Type External Hex Material Alloy Steel Finish Black Oxide Pack Size Small Pack Special Features Not Applicable Container Material Plastic Includes Case Manufacturer Location Made in US Number of Different Sizes 12