McMaster 94895A823 SAE Grade 8 High Strength Steel Hex Nut, Pack of 50, Zinc Yellow Chromate Plated, 1 2" 13 Thread 7530 01 562 3259 Pressure 1935 psi Tube Material Pressure 1935 psi Tube Material Copper Temp 000 psi Welding Method GMAW AWS Classification ER430 Welding Wire Type Solid Application MIG Welding Material Aluminum Series ER4043 Standards AWS A5 SAE Grade 8 high strength steel hex nut with zinc yellow chromate plating for corrosion resistance in wet and outdoor environments Hex Nut Profile Standard Material Zinc Yellow Chromate Plated Steel Thread Size 1 2" 13 Width 3 4" Height 7 16" Fastener Strength Grade Class SAE Grade 8 Drive Style External Hex Nut Type Hex Thread Spacing Coarse Thread Type UNC Pack Size 50 per pack Country of Origin Canada Schedule B Number 731816