NATO Stock Number
5306-00-472-2763
Sold in multiples of
EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.685 inches and 0.753 inches
Fastener Length
Between 0.719 inches and 0.781 inches
Head Style
Hexagon
Head Height
Between 0.208 inches and 0.230 inches
Width Between Flats
Between 0.491 inches and 0.500 inches
Washer Quantity
1
Thread Diameter
0.312 inches
Thready Qty Per Inch (tpi)
18
Hardness Rating
30.0 rockwell c and 40.0 rockwell c
Primary Washer Outside Diameter
Between 0.567 inches and 0.590 inches
Primary Washer Material Thickness
Between 0.028 inches and 0.034 inches
Material
Steel comp 1022 or steel comp 1050
Material Specification
Sae assn standard all material responses
Thread Series Designator
Unc