bolts › close tolerance bolts
NAS1578V4H16
Bolt
Description
Fastener Length: 1-13/32", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Fastener Length | 1.388 inches minimum and 1.418 inches maximum |
|---|---|
| Grip Diameter | 0.2490 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.990 inches minimum and 1.010 inches maximum |
| Head Diameter | 0.477 inches minimum and 0.492 inches maximum |
| Head Height | 0.140 inches minimum and 0.150 inches maximum |
| Head Style | Pan no. 2 |
| Internal Drive Style | High-torque |
| Length | 1 13/32 |
| Material | Titanium |
| Material Specification | Ams4967,comp 6al-4v assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1578 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.378 inches minimum and 0.428 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS1578C4R16 NAS 1/4-28 · 0.073 in · Pan no. 2 · Iron
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Catalog data updated 2026-07-05. Report a data error