Tensile Strength (Psi): 64,000 Psi;Thickness Tolerance: +0.002 In;Finish: Plain;Material: Steel;Rockwell Hardness: B85;Length: 4 In;End Type: Tapered Gib;Features: Tapers 1/8 In Per Ft;Type: Tapered Gib Head;Head Height: 1 In;Package Quantity: 1;Length Tolerance: -0.100 In;Application: Holds Pulleys And Gears On Transmission Shafts;Item: Machine Key;Square: 5/8 In;Country Of Origin (Subject To Change): United States;