NATO Stock Number
5305-01-038-2566
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.328 inches
Fastener Length
Between 0.468 inches and 0.500 inches
Head Style
Pan
Head Diameter
Between 0.357 inches and 0.373 inches
Head Height
Between 0.122 inches and 0.132 inches
Washer Quantity
2
Internal Drive Style
Cross recess type 1
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
32
Min. Tensile Strength (psi)
55000 pounds per square inch
Secondary Washer Relationship To Primary Washer
Not identical
Secondary Washer Style
Flat
Primary Washer Outside Diameter
0.334 inches
Secondary Washer Outside Diameter
Between 0.338 inches and 0.348 inches
Primary Washer Style
Split helical ring
Primary Washer Material Thickness
0.047 inches
Secondary Washer Material Thickness
Between 0.029 inches and 0.035 inches
Material
Steel comp 1010 fastener
Material
Steel primary washer or steel comp 1020 primary washer or steel comp 1025 primary washer
Material
Steel secondary washer
Material Specification
Astm a108 assn standard single material response fastener
Material Specification
Qq-s-698 federal specification 1st material response primary washer or mil-s-7952 military specification 2nd material response primary washer or mil-s-7952 military specification 3rd material response primary washer
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, cl 2 or 3 federal specification all treatment responses
Thread Series Designator
Unc
Specification Data
80205-nas 1301 professional/industrial association standard