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ASTM A194 2H Heavy Nuts, Black Coated Nuts, Size 1/2in, UNC Thread Material A194 2H Hex Nuts,
ASTM A320 L7 with 2 Heavy Nuts,Stud material ASTM A320 L7 and Nut material ASTM A194 7,Size 1Inch x 6 1/2Inch Length,Standard ANSI B18.2.1