bolts › close tolerance bolts
NAS1154E14
Bolt
Description
Fastener Length: 1-3/16", 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 | 1.050 inches minimum first hole and 1.090 inches maximum first hole |
| Fastener Length | 1.191 |
| Grip Diameter | 0.248 inches minimum and 0.249 inches maximum |
| Grip Length | 0.875 |
| Head Diameter | 0.449 inches minimum and 0.507 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 1 3/16 |
| Material | Iron |
| Material Specification | Ams5737 assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Part Name Assigned By Controlling Agency | Flat 100 deg head,close tolerance, short thread,offset cruciform,160ksi |
| Shank Unthreaded Hole Diameter | 0.076 inches nominal first hole |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| 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 NAS1154E14. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error