screws › close tolerance screws
NAS1133-4
Close Tolerance Screw
Description
Close Tolerance Screw
Specifications
| Fastener Length | 0.511 inches minimum and 0.541 inches maximum |
|---|---|
| Grip Diameter | 0.1885 inches minimum and 0.1895 inches maximum |
| Grip Length | 0.240 inches minimum and 0.260 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 0.331 inches minimum and 0.373 inches maximum |
| Head Height | 0.122 inches minimum and 0.133 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Offset cruciform (torque set) |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1133 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 | Qq-p-416,ty2,cl2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | 0.251 inches minimum and 0.301 inches maximum |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNJF |
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.
- NAS1133E4 NAS 17/32 in · Pan Head · Iron
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Catalog data updated 2026-07-05. Report a data error