NATO Stock Number
5305-01-269-5125
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.484 inches and 0.516 inches
Fastener Length
Between 0.593 inches and 0.625 inches
Head Style
Pan
Head Diameter
Between 0.306 inches and 0.322 inches
Head Height
Between 0.307 inches and 0.317 inches
Washer Quantity
2
Internal Drive Style
Cross recess type 1
Thread Diameter
0.164 inches
Thready Qty Per Inch (tpi)
32
Hardness Rating
35.0 rockwell c primary washer and 43.0 rockwell c primary washer
Secondary Washer Relationship To Primary Washer
Not identical
Secondary Washer Style
Flat
Primary Washer Outside Diameter
0.293 inches
Secondary Washer Outside Diameter
Between 0.307 inches and 0.317 inches
Primary Washer Style
Split helical ring
Primary Washer Material Thickness
0.040 inches
Secondary Washer Material Thickness
Between 0.013 inches and 0.019 inches
Material
Steel comp 301 primary washer or steel comp 302 primary washer or steel comp 303 primary washer or steel comp 303f primary washer or steel comp 304 primary washer or steel comp 304l primary washer or steel comp 305 primary washer or steel comp 308 primary washer or steel comp 309 primary washer or steel comp 309s primary washer or steel comp 310 primary washer or steel comp 310s primary washer or steel comp 314 primary washer or steel comp 316 primary washer or steel comp 316l primary washer or steel comp 317 primary washer or steel comp 321 primary washer or steel comp 323 primary washer or steel comp 348 primary washer or steel comp 385 primary washer or steel comp 302b primary washer or steel comp 384 primary washer or steel comp 303se primary washer
Material
Steel comp 302 fastener or steel comp 304 fastener
Material
Steel comp 302 secondary washer or steel comp 304 secondary washer
Material Specification
Mil-s-5059 military specification all material responses secondary washer
Material Specification
Qq-s-763 federal specification all material responses 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
