NATO Stock Number
5305-00-115-1377
Sold in multiples of
EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.250 inches
Fastener Length
Between 0.343 inches and 0.375 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 1010 or steel or steel comp 1025
Material Specification
Qq-s-634 federal specification 1st material response or qq-s-698 1/2 hard federal specification 2nd material response or mil-s-7952 military specification 3rd material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification all treatment responses
Thread Series Designator
Unc
