bolts › close tolerance bolts
NAS338CP45
Bolt
Description
Fastener Length: 4-3/4", Thread: 1/2-20, Head Width: 3/8", Thread Length: 13/16"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 4.537 inches minimum first hole and 4.557 inches maximum first hole |
| Fastener Length | 4.703 inches minimum and 4.750 inches maximum |
| Grip Diameter | 0.4982 inches minimum and 0.4991 inches maximum |
| Grip Length | 3.928 inches minimum and 3.948 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 1.007 inches minimum and 1.017 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Hexagon |
| Length | 4 3/4 |
| Material | Steel |
| Material Specification | Mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.106 inches nominal first hole |
| Specification Data | 80205-nas338 professional/industrial association standard |
| Surface Finish | 32.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2 cl 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.500 |
| Thread Direction | Right-hand |
| Thread Length | 0.755 inches minimum and 0.822 inches maximum |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNF |
| Thread Size | 1/2 |
| Width Across Flats | 0.376 inches minimum and 0.379 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS338CP45. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error