bolts › machine bolts
NAS6704-4
Close Tolerance Bolt
Description
Length: 0.675", grip: 0.250", thread: 1/4-28, hex head, tension, long thread, cadmium plated corrosion resistant steel
Specifications
| Country of Origin | USA |
|---|---|
| Fastener Length | Between 0.660 inches and 0.690 inches |
| Grip Diameter | Between 0.2485 inches and 0.2495 inches |
| Grip Length | Between 0.240 inches and 0.260 inches |
| Head Height | Between 0.125 inches and 0.140 inches |
| Head Style | Dished hexagon |
| Material | Iron |
| Material Specification | Ams 5731 assn standard single material response or ams 5737 assn standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 01-229-5554 |
| NSN | 5306-01-229-5554 |
| Specification Data | 80205-nas6704 professional/industrial association standard |
| Surface Finish | 125.0 microinches top of head, 132.0 microinches sides of head, 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Passivate and chromate |
| Surface Treatment Specification | Class 3 federal specification all treatment responses type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.410 inches and 0.440 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
| Weight | .0015 lb |
| Width Between Flats | Between 0.430 inches and 0.439 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS6704-2
- NAS6704-4
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS6704-4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error