bolts › close tolerance bolts
NAS1790V4R18A
Bolt
Description
Fastener Length: 1/2", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.485 inches minimum and 0.515 inches maximum |
| Grip Diameter | 0.249 nominal mils and 0.250 nominal centimeters |
| Grip Length | 0.500 nominal inches |
| Head Diameter | 0.464 inches minimum and 0.506 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 1/2 |
| Material | Titanium |
| Material Specification | Ams4928 or ams4967, 6al-4v assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Part Name Assigned By Controlling Agency | Bolt, 100 degree flush head, 160,000 psi uts |
| Surface Treatment | Aluminum |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.425 |
| 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.
- NAS1790V4R4A
- NAS1790V4R16A
- NAS1790V4R18A
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1790V4R18A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error