NATO Stock Number
5306-00-042-5400
Sold in multiples of
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 1.063 inches and 1.188 inches
Fastener Length
Between 1.188 inches and 1.250 inches
Head Style
Hexagon
Head Height
Between 0.270 inches and 0.295 inches
Width Between Flats
Between 0.551 inches and 0.562 inches
Washer Quantity
1
Thread Diameter
0.375 inches
Thready Qty Per Inch (tpi)
16
Primary Washer Outside Diameter
Between 0.678 inches and 0.692 inches
Primary Washer Style
Flat internal teeth
Primary Washer Material Thickness
0.035 inches
Material
Steel comp 1010 or steel comp 1020
Material
Steel comp 1010 or steel comp 1020
Material Specification
Sae assn standard all material responses
Surface Treatment
Cadmium or zinc
Surface Treatment
Cadmium or zinc
Surface Treatment Specification
Qq-p-416, type 1, cl 3 federal specification 1st treatment response or qq-z-325, type 3, cl 3 federal specification 2nd treatment response
Surface Treatment Specification
Qq-p-416, type 1, cl 3 federal specification 1st treatment response or qq-z-325, type 3, cl 3 federal specification 2nd treatment response
Thread Series Designator
Unc
