NATO Stock Number
5305-01-320-8838
Sold in multiples of
100 EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.203 inches
Fastener Length
Between 0.343 inches and 0.375 inches
Head Style
Pan no. 2
Head Diameter
Between 0.357 inches and 0.373 inches
Head Height
Between 0.338 inches and 0.348 inches
Washer Quantity
2
Internal Drive Style
Cross recess type 1
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
32
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
Between 0.029 inches and 0.035 inches
Secondary Washer Material Thickness
Between 0.029 inches and 0.035 inches
Material
Steel comp 304 fastener or steel comp 302 fastener
Material
Steel comp 302 primary washer or steel comp 301 primary washer or steel comp 304 primary washer or steel comp 316 primary washer
Material
Steel comp 321 secondary washer or steel comp 347 secondary washer or steel comp 348 secondary washer
Material Specification
Mil-s-6721 military specification all material responses secondary washer or mil-s-5059 military specification all material responses secondary washer
Material Specification
Qq-s-763 cl 4 federal specification all material responses fastener or mil-s-7720 military specification 1st material response fastener
Thread Series Designator
Unf
Specification Data
80205-nas1301 professional/industrial association standard
