UNBRAKO Set Screws Knurled Cup Point Inch As Per Standard Asme/Ansi:B18.3. Bs Whitworth, Medium : 84

Heat treated alloy steel for maximum strength without brittleness or decarburization. Fully formed threads with continuous grain flow for greater strength and precision fit. Knurled cup point for positive self-locking and vibration resistance. Deep socket ? Key fits deeply into socket to provide extra wrenching area for tighter tightening without reaming the socket or rounding off corners of key. Continuous grain flow ? Flow lines of rolled threads follow closely the contour of the screw. Fully formed threads ? are rolled, not cut or ground. Metal is compressed, making it extra strong. Threads resist shearing, withstand higher tightening torques. Class 3A threads ? Formed with closest interchangeable fit for maximum cross section with smooth assembly. Assure better mating of parts.