41 Pc Machine Screw Fractional Tap and Hex Die Set no checkout Non reflective ProtoBlack™ finish for use Non reflective ProtoBlack™ finish for use where non plated products are required Extra wide jaw capacity Square jaw opening provides strength and tight fit hydrocarbon based solvent designed for cleaning and degreasing surfaces to be bonded with adhesives Also great for general purpose industrial cleaning Will not cause flash rusting on water sensitive parts Drying time is 5 20 minutes (without wipe) and 1 2 minutes (with wipe) Contains no ozone depleting compounds Designed to ensure that bolts fit tightly and anchor securely Plug taps have 3 to 5 chamfered threads and are for general purpose applications High carbon steel hexagon dies are ideal for cutting right hand external threads Hex head shape is designed for use in die stock and adjustable wrenches