bolts › close tolerance bolts
NAS1154E17D
Bolt
Description
Fastener Length: 1-25/64", Thread: 1/4-28, Thread Length: 5/16"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 0.946 inches nominal first hole |
| Fastener Length | 1.363 inches minimum and 1.393 inches maximum |
| Grip Diameter | 0.248 inches minimum and 0.249 inches maximum |
| Grip Length | 1.052 inches minimum and 1.072 inches maximum |
| Head Diameter | 0.497 inches minimum and 0.507 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 1 25/64 |
| Material | Steel |
| Shank Unthreaded Hole Diameter | 0.076 inches minimum first hole and 0.086 inches maximum first hole |
| Surface Treatment | Passivate |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.316 |
| 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.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1154E17D. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error