screws › close tolerance screws
NAS1153-8
Close Tolerance Screw
Description
Flat Head Machine Screw
Specifications
| Countersink Angle | Between 99 degrees and 101 degrees |
|---|---|
| Country of Origin | USA |
| Fastener Length | Between 0.761 inches and 0.791 inches |
| Finish | Cadmium Plated, Type II, Class 2 per QQ-P-416 |
| Grip | 0.500 in |
| Grip Diameter | Between 0.1885 inches and 0.1895 inches |
| Grip Length | 0.50 |
| Head Angle | 100 º |
| Head Diameter | Between 0.328 inches and 0.385 inches |
| Head Style | Flat countersunk |
| Head Type | Offset Cruciform |
| Industry Standards/Certification | NAS1153 |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 0.776 in |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 00-821-2839 |
| NSN | 5305-00-821-2839 |
| Sold In | Per Package |
| Surface Finish | 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Thread Class | 3a |
| Thread Diameter | 0.192 |
| Thread Direction | Right-hand |
| Thread Length | 0.276 |
| 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 | 12 |
| Weight | .005 lb |
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 NAS1153-8. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error