Worldwide distributor of NSN parts and consumables located in the USA.
Length: 0.613\", thread: 1/4-28, reduced head bolt, 100° , flat head, torq-set recess, alloy steel
National Stock Number (NSN) | 5305-01-275-3293 |
Alternate Part Number | N/A |
Federal Supply Class (FSC) | 5305 |
Unit of Measure (UOM) | 50 /Ea. |
Thread Class | 3a |
Thread Direction | Right-hand |
Thread Length | Between 0.400 inches and 0.450 inches |
Fastener Length | Between 0.598 inches and 0.628 inches |
Head Style | Flat countersunk |
Head Diameter | Between 0.346 inches and 0.399 inches |
Grip Diameter | Between 0.2485 inches and 0.2495 inches |
Internal Drive Style | Offset cruciform (torque set) |
Thread Diameter | 0.250 inches |
Grip Length | Between 0.178 inches and 0.198 inches |
Thready Qty Per Inch (tpi) | 28 |
Hardness Rating | 39.0 rockwell c and 43.0 rockwell c |
Countersink Angle | Between 99.0 degrees and 101.0 degrees |
Surface Finish | 32.0 microinches grip |
Surface Finish | 32.0 microinches threads |
Surface Finish | 63.0 microinches bearing surface of head |
Material | Steel comp 4140 or steel comp e4340 or steel comp 8740 |
Material Specification | Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mi-s-6049 military specification 3rd material response |
Surface Treatment | Cadmium and chromate |
Surface Treatment Specification | Qq-p-416 ty2 cl2 federal specification single treatment response |
Thread Series Designator | Unjf |
Specification Data | 80205-nas1994 professional/industrial association standard |
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