screws › close tolerance screws
NAS1578A3T8
Close Tolerance Screw
Description
Flat Pan Head Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Fastener Length | Between 0.848 inches and 0.878 inches |
| Grip Diameter | Between 0.1885 inches and 0.1895 inches |
| Grip Length | Between 0.490 inches and 0.510 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 | 7/8 |
| Material | Steel |
| Material Specification | Mil-s-5000 military specification 1st material response or mil-s-5626 military specification 2nd material response or mil-s-6049 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-8503 military specification 5th material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 01-058-3931 |
| NSN | 5305-01-058-3931 |
| Special Features | Internal drive ribbed |
| Specification Data | 80205-nas 1578 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 | Cl 2 federal specification all treatment responses qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.338 inches and 0.388 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 |
| Weight | 0.01 lb |
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.
- NAS1578C3T8 NAS #10-32 · 7/8 in · Pan no. 2 · Iron
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Catalog data updated 2026-07-05. Report a data error