NationalStockNumber.INFO
Worldwide distributor of NSN parts and consumables located in the USA.
Worldwide distributor of NSN parts and consumables located in the USA.
Length: 0.594", grip: 0.125", thread: 1/4-28, shear, close tolerance screw, alloy steel
| National Stock Number (NSN) | 5305-00-638-6400 |
| Alternate Part Number | N/A |
| Federal Supply Class (FSC) | 5305 |
| Unit of Measure (UOM) | 100 /Ea. |
| Thread Class | 3a |
| Thread Direction | Right-hand |
| Thread Length | Between 0.402 inches and 0.473 inches |
| Fastener Length | Between 0.579 inches and 0.624 inches |
| Head Style | Flat countersunk |
| Head Diameter | Between 0.452 inches and 0.510 inches |
| Internal Drive Style | Cross recess type ii |
| Thread Diameter | 0.250 inches |
| Thready Qty Per Inch (tpi) | 28 |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
| Screw Material | Steel comp 4130 or steel comp 4340 or steel comp 8740 |
| Screw Material Specification | Mil-s-6758 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-6049 military specification 3rd material response |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Qq-p-416 type 2 cl 3 federal specification single treatment response |
| Thread Series Designator | Unf |
| Specification Data | 80205-nas517 professional/industrial association standard |
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