NATO Stock Number
5305-01-192-2211
Sold in multiples of
1 AY
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.168 inches and 0.250 inches
Fastener Length
Between 0.218 inches and 0.250 inches
Head Style
Pan
Head Diameter
Between 0.205 inches and 0.219 inches
Head Height
Between 0.078 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
Min. Tensile Strength (psi)
55000 pounds per square inch
Hardness Rating
45.0 rockwell c secondary washer and 53.0 rockwell c secondary washer
Secondary Washer Relationship To Primary Washer
Not identical
Secondary Washer Style
Flat
Primary Washer Outside Diameter
0.172 inches
Secondary Washer Outside Diameter
Between 0.213 inches and 0.223 inches
Primary Washer Style
Split helical ring
Primary Washer Material Thickness
0.025 inches
Secondary Washer Material Thickness
Between 0.013 inches and 0.019 inches
Material
Steel
Material Specification
66 federal standard all material responses secondary washer
Material Specification
Qq-s-633 federal specification single material response fastener
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl2 federal specification single treatment response
Thread Series Designator
Unc
Specification Data
80205-nas1301 professional/industrial association standard
