NATO Stock Number
5305-00-194-0768
Sold in multiples of
100 EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.450 inches and 0.500 inches
Fastener Length
0.500 inches
Head Style
Pan
Head Diameter
Between 0.205 inches and 0.219 inches
Head Height
Between 0.070 inches and 0.080 inches
Washer Quantity
2
Internal Drive Style
Cross recess type 1
Thread Diameter
0.112 inches
Thready Qty Per Inch (tpi)
40
Hardness Rating
45.0 rockwell c primary washer and 53.0 rockwell c primary washer
Secondary Washer Relationship To Primary Washer
Not identical
Secondary Washer Style
Flat
Primary Washer Outside Diameter
0.209 inches
Secondary Washer Outside Diameter
Between 0.307 inches and 0.320 inches
Primary Washer Style
Split helical ring
Primary Washer Material Thickness
Between 0.025 inches and 0.031 inches
Secondary Washer Material Thickness
Between 0.025 inches and 0.040 inches
Material Specification
Astm-a576 assn standard all material responses primary washer or astm-a108 assn standard all material responses primary washer
Material Specification
Astm-a576 assn standard all material responses fastener or astm-a108 assn standard all material responses fastener
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
Thread Series Designator
Unc
