Thread Class: 3A
Thread Direction: Right-Hand
Thread Length: 0.741 Inches Minimum
Fastener Length: 1.991 Inches Nominal
Head Style: Double Hexagon W/Hole
Head Height: 0.504 Inches Nominal
Width Between Flats: 0.556 Inches Minimum And 0.565 Inches Maximum
Extended Washer Diameter: 0.823 Inches Nominal
Extended Washer Thickness: 0.123 Inches Nominal
Grip Diameter: 0.4985 Inches Minimum And 0.4995 Inches Maximum
Nominal Thread Diameter: 0.500 Inches
Grip Length: 1.250 Inches Nominal
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 180000 Pounds Per Square Inch
Hardness Rating: 39.0 Rockwell C Minimum Overall And 43.0 Rockwell C Maximum Overall
Material: Steel Comp 4140 Overall Or Steel Comp E4340 Overall Or Steel Comp 6150 Overall Or Steel Comp 8735 Overall Or Steel Comp 8740 Overall
Material Document And Classification: Mil-S-5626 Mil Spec 1St Material Response Overall Or Mil-S-5000 Mil Spec 2Nd Material Response Overall Or Mil-S-8503 Mil Spec 3Rd Material Response Overall Or Mil-S-6098 Mil Spec 4Th Material Response Overall Or Mil-S-6049 Mil Spec 5Th Material Responseoverall
Surface Treatment: Cadmium Overall
Surface Treatment Document And Classification: Nas 672 Assn Std Single Treatment Response Overall
Thread Series Designator: Unf
Specification/Standard Data: 80205-NAS628 Professional/Industrial Association Standard