NATO Stock Number
5305-01-301-7838
Sold in multiples of
100 EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.125 inches
Fastener Length
Between 0.218 inches and 0.250 inches
Head Style
Pan
Head Diameter
Between 0.256 inches and 0.270 inches
Head Height
Between 0.087 inches and 0.097 inches
Washer Quantity
2
Internal Drive Style
Cross recess type 1
Thread Diameter
0.138 inches
Thready Qty Per Inch (tpi)
32
Secondary Washer Relationship To Primary Washer
Not identical
Secondary Washer Style
Flat
Primary Washer Outside Diameter
0.250 inches
Secondary Washer Outside Diameter
Between 0.253 inches and 0.263 inches
Primary Washer Style
Split helical ring
Primary Washer Material Thickness
0.031 inches
Secondary Washer Material Thickness
Between 0.013 inches and 0.019 inches
Material
Steel comp 302 fastener or steel comp 304 fastener
Material
Steel comp 302 primary washer or steel comp 304 primary washer
Material
Steel comp 302 secondary washer or steel comp 304 secondary washer
Material Specification
Mil-s-5059 military specification all material responses primary washer
Material Specification
Qq-s-763 cond b federal specification 1st material response fastener or qq-s-763 cond a federal specification 2nd material response fastener
Surface Treatment
Passivate fastener
Surface Treatment
Passivate primary washer
Surface Treatment
Passivate secondary washer
Surface Treatment Specification
Qq-p-35 federal specification single treatment response fastener
Surface Treatment Specification
Qq-p-35 federal specification single treatment response primary washer
Surface Treatment Specification
Qq-p-35 federal specification single treatment response secondary washer
Thread Series Designator
Unc
Specification Data
80205-nas1301 professional/industrial association standard
