screws › machine screws
NAS1154-38
Screw
Description
Fastener Length: 2-45/64", Thread: 1/4-28, Thread Length: 21/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 2.676 inches minimum and 2.706 inches maximum |
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 2.365 inches minimum and 2.385 inches maximum |
| Head Diameter | 0.449 |
| Head Style | Flat countersunk |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 2 45/64 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Part Name Assigned By Controlling Agency | Screw |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.301 inches minimum and 0.331 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 1/4 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1154-38. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error