Worldwide distributor of NSN parts and consumables located in the USA.
Thread: 1/4-28, external wrenching bolt, flanged, 12 point, cadmium plated steel alloy, drilled head
National Stock Number (NSN) | 5306-00-942-2186 |
Alternate Part Number | N/A |
Federal Supply Class (FSC) | 5306 |
Unit of Measure (UOM) | 2 /Ea. |
Thread Class | 3a |
Thread Direction | Right-hand |
Thread Length | 0.492 inches |
Fastener Length | 0.762 inches |
Head Style | Double hexagon w/hole |
Head Height | 0.300 inches |
Width Between Flats | Between 0.304 inches and 0.313 inches |
Extended Washer Diameter | Between 0.428 inches and 0.438 inches |
Extended Washer Thickness | 0.069 inches |
Hole Diameter | 0.037 inches |
Grip Diameter | Between 0.2485 inches and 0.2495 inches |
Thread Diameter | 0.250 inches |
Grip Length | 0.250 inches |
Hole Quantity | 4 |
Hole Type | Drilled |
Thready Qty Per Inch (tpi) | 28 |
Min. Tensile Strength (psi) | 180000 pounds per square inch |
Hardness Rating | 39.0 rockwell c and 43.0 rockwell c |
Hole Configuration Style | Double hexagon longitudinal hole |
Material | Steel comp 8740 or steel comp e4340 or steel comp 4340 or steel comp 6150 or steel comp 4140 |
Surface Treatment | Cadmium and chromate |
Surface Treatment Specification | Qq-p-416, type 2, cl 3 federal specification single treatment response |
Thread Series Designator | Unf |
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