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NAS6205-26D
Close Tolerance Bolt-Drilled Shank
Description
Close Tolerance Bolt-Drilled Shank
Specifications
| Country of Origin | USA |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.871 inches first hole and 1.891 inches first hole |
| Drilling | Drilled Head |
| Fastener Length | Between 2.048 inches and 2.078 inches |
| Grip | 1.625 in |
| Grip Diameter | Between 0.3110 inches and 0.3120 inches |
| Grip Length | Between 1.615 inches and 1.635 inches |
| Grip Tolerance | ±0.010 in |
| Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
| Head Height | Between 0.156 inches and 0.171 inches |
| Head Style | Dished hexagon |
| Head Type | Hexagon |
| Industry Standards/Certification | NAS6205 |
| Length | 2.063 in |
| Material | Steel |
| Material Specification | 4340 or e4340 military specification single material response mil-s-5000 |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 01-176-8329 |
| NSN | 5306-01-176-8329 |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole and 0.086 inches first hole |
| Specification Data | 80205-nas6205 professional/industrial association standard |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Cl 2 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.438 |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.3125-24, 1/4 |
| Weight | .005 lb |
| Width Between Flats | Between 0.492 inches and 0.502 inches |
Cross-reference
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Catalog data updated 2026-07-05. Report a data error