NATO Stock Number
5306-00-144-3865
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.327 inches and 0.391 inches
Fastener Length
Between 1.843 inches and 1.875 inches
Head Style
Button
Head Diameter
Between 0.609 inches and 0.641 inches
Head Height
Between 0.140 inches and 0.172 inches
Groove Diameter
Between 0.245 inches and 0.255 inches
Shank Unthreaded Hole Diameter
0.076 inches first hole and 0.086 inches first hole
Single Shear Strength
5750 pounds per square inch
Internal Drive Style
Slot
Thread Diameter
0.312 inches
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
125000 pounds per square inch
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Distance From Head Largest Bearing Surface To Shank Hole Center
1.672 inches first hole and 1.704 inches first hole
Material
Steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4140 or steel comp 4130 or steel comp 4037
Material Specification
Mil-s-6049 military specification 1st material response or mil-s-6050 military specification 2nd material response or mil-s-6098 military specification 3rd material response or mil-s-5626 military specification 4th material response or mil-s-6758 military specification 5th material response or mil-s-8695 military specification 6th material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2 cl 3 federal specification all treatment responses
Thread Series Designator
Unf
Departure From Cited Document
Thread t per mil-s-7742 except major diameter is not to exceed max allow shank bolt dia
