bolts › close tolerance bolts
NAS1578A3R2
Close Tolerance Bolt
Description
Fastener Length: 1/2", Thread: 10-32, Thread Length: 3/8
Specifications
| Fastener Length | Between 0.472 inches and 0.502 inches |
|---|---|
| Grip Diameter | Between 0.1885 inches and 0.1895 inches |
| Grip Length | Between 0.115 inches and 0.125 inches |
| Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
| Head Diameter | Between 0.360 inches and 0.374 inches |
| Head Height | Between 0.115 inches and 0.125 inches |
| Head Style | Pan no. 2 |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 1/2 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Special Features | Internal drive ribbed |
| Specification Data | 80205-nas1578 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Class 2 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.337 inches and 0.387 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 10 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1578A3R2. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error