screws › close tolerance screws
NAS1580C3T11
Close Tolerance Screw
Description
Flush Reduced Head Bolt
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Country of Origin | USA |
| Fastener Length | 1.036 inches minimum and 1.066 inches maximum |
| Grip Diameter | 0.1885 inches minimum and 0.1895 inches maximum |
| Grip Length | 0.678 inches minimum and 0.698 inches maximum |
| Head Diameter | 0.339 inches minimum and 0.381 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 1 1/16 |
| Material | Iron |
| Material Specification | Ams 5731 assn std single material response or ams 5732 assn std single material response or ams 5737 assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| NIIN | 01-251-9259 |
| NSN | 5305-01-251-9259 |
| Special Features | Internal drive ribbed |
| Specification Data | 80205-nas1580 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches grip, 32.0 microinches threads |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | 0.338 inches minimum and 0.388 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNJF |
| Thread Size | 10 |
| Weight | 0.01 lb |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1580C3T11. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error