bolts › close tolerance bolts
NAS334CPA6
Close Tolerance Bolt
Description
Length: 0.781", Grip: 0.312", Thread: 1/4-28, close tolerance, high strength, cruciform recess, undrilled, NAS334 series bolt
Specifications
| Countersink Angle | 100.0 degrees |
|---|---|
| Fastener Length | Between 0.765 inches and 0.812 inches |
| Grip | 0.312 |
| Grip Diameter | Between 0.2483 inches and 0.2492 inches |
| Grip Length | 0.375 |
| Hardness Rating | 36.0 rockwell c grip and 40.0 rockwell c grip |
| Head Diameter | Between 0.497 inches and 0.507 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 0.781 |
| 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 |
| Specification Data | 80205-nas334 professional/industrial association standard |
| Surface Finish | 32.0 microinches top of head |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 3 federal specification single treatment response grip type 2 qq-p-416 |
| Thread | 1/4-28 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.398 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS334CPA6. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error