bolts › close tolerance bolts
NAS1578V4R7
Bolt
Description
Fastener Length: 27/32", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Fastener Length | 0.826 inches minimum and 0.856 inches maximum |
|---|---|
| Grip Diameter | 0.2490 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.428 inches minimum and 0.448 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 | Offset cruciform (torque set) |
| Length | 27/32 |
| Material | Titanium |
| Material Specification | Ams 4967 assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Special Features | Internal drive ribbed |
| 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 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1578V4R5
- NAS1578V4R7
- NAS1578V4R9
- NAS1578V4R10
- NAS1578V4R12
- NAS1578V4R13
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.
- NAS1578A4T7 NAS 1/4-28 · 27/32 in · Pan no. 2 · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error