NATO Stock Number
5306-01-026-5777
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.380 inches
Fastener Length
Between 2.300 inches and 2.310 inches
Head Style
Flat chamfer
Head Diameter
Between 0.990 inches and 1.010 inches
Head Height
Between 0.190 inches and 0.210 inches
Shoulder Diameter
0.520 inches first shoulder and 0.525 inches first shoulder
Shoulder Length
0.775 inches first shoulder and 0.785 inches first shoulder
Rib Major Diameter
Between 0.550 inches and 0.560 inches
Rib Length
Between 0.310 inches and 0.330 inches
Distance From Largest Diameter Of Bearing Surface Of Head To Ribs
Between 0.050 inches and 0.070 inches
Rib Quantity
35
Thread Diameter
0.500 inches
Features Provided
Casehardened
Thready Qty Per Inch (tpi)
20
Hardness Rating
322.0 brinell standard and 363.0 brinell standard
Shoulder Shape
Round first shoulder
Material
Steel comp 1335 or steel comp 1340 or steel comp 4037 or steel comp 4135 or steel comp 8637 or steel comp 8640 or steel comp 8740
Material Specification
Astm a547 assn standard all material responses
Surface Treatment
Zinc and chromate or cadmium and chromate
Surface Treatment Specification
Qq-z-325, cl 2 federal specification 1st treatment response and qq-z-325, cl 2 federal specification 2nd treatment response or qq-p-416, cl 2 federal specification 3rd treatment response and qq-p-416, cl 2 federal specification 4th treatment response
Thread Series Designator
Unf
