Worldwide distributor of NSN parts and consumables located in the USA.
Length: 2.550", grip: 2.125", thread: 1/4-28, hex head, drilled head, tension, long thread, cadmium plated alloy steel
National Stock Number (NSN) | 5306-01-229-5550 |
Alternate Part Number | N/A |
Federal Supply Class (FSC) | 5306 |
Unit of Measure (UOM) | 1 /Ea. |
Thread Class | 3a |
Thread Direction | Right-hand |
Thread Length | Between 0.400 inches and 0.450 inches |
Fastener Length | Between 2.535 inches and 2.565 inches |
Head Style | Dished hexagon |
Head Height | Between 0.125 inches and 0.140 inches |
Width Between Flats | Between 0.430 inches and 0.439 inches |
Hole Diameter | Between 0.046 inches and 0.056 inches |
Grip Diameter | Between 0.2485 inches and 0.2495 inches |
Thread Diameter | 0.250 inches |
Grip Length | Between 2.115 inches and 2.135 inches |
Hole Quantity | 3 |
Hole Type | Drilled |
Thready Qty Per Inch (tpi) | 28 |
Min. Tensile Strength (psi) | 160000 pounds per square inch |
Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
Hole Configuration Style | Hexagon corners |
Surface Finish | 125.0 microinches sides of head |
Surface Finish | 125.0 microinches top of head |
Surface Finish | 32.0 microinches bearing surface of head |
Surface Finish | 32.0 microinches grip |
Surface Finish | 32.0 microinches threads |
Material | Steel comp 4340 or steel comp 8740 |
Material Specification | Mil-s-5000 military specification 1st material response or mil-s-6049 military specification 2nd material response or ams 6322 assn standard 2nd material response |
Surface Treatment | Passivate and chromate |
Surface Treatment Specification | Qq-p-416, type 2, class 3 federal specification all treatment responses |
Thread Series Designator | Unjf |
Specification Data | 80205-nas6604 professional/industrial association standard |
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