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NAS1790-4R9
Bolt
Description
Fastener Length: 63/64", Thread: 1/4-28, Thread Length: 27/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.988 |
| Grip Diameter | 0.2485 inches minimum and 0.2495 inches maximum |
| Grip Length | 0.563 |
| Head Diameter | 0.506 |
| Head Style | Flat countersunk |
| Length | 63/64 |
| Material | Steel |
| Material Specification | Mil-s-5626 mil spec all material responses |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416, type2, class 2 fed spec single treatment response |
| 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.
- NAS1790-4R3
- NAS1790-4R6
- NAS1790-4R7
- NAS1790-4R8
- NAS1790-4R9
- NAS1790-4R11
- NAS1790-4R22
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.
- BACB30LR4-9 BAC 1/4-28 · 31/32 in · Flat countersunk · Steel
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Catalog data updated 2026-07-05. Report a data error