bolts › close tolerance bolts
NAS334C5
Close Tolerance Bolt
Description
Fastener Length: 11/16", Thread: 1/4-28, Head Width: 5/32", Thread Length: 1/2
Specifications
| Countersink Angle | 100.0 degrees |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 0.500 inches first hole |
| Drive Style | Hexagon |
| Fastener Length | Between 0.641 inches and 0.688 inches |
| Grip Diameter | Between 0.2483 inches and 0.2492 inches |
| Grip Length | Between 0.178 inches and 0.198 inches |
| Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
| Head Diameter | Between 0.497 inches and 0.507 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Hexagon |
| Material | Steel |
| Material Specification | Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole |
| Specification Data | 80205-nas334 professional/industrial association standard |
| Surface Finish | 32.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 2 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.443 inches and 0.510 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 |
| Width Across Flats | Between 0.157 inches and 0.159 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- NAS334CA5 NAS 1/4-28 · 11/16 in · Flat countersunk · Steel
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Catalog data updated 2026-07-05. Report a data error