screws › close tolerance screws
NAS1189E04P5B
Close Tolerance Screw
Description
Fastener Length: 5/16", Thread: 4-40, Thread Length: 17/64
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.281 inches minimum and 0.312 inches maximum |
| Head Diameter | 0.117 inches minimum and 0.225 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 5/16 |
| Locking Feature | Patch threads |
| Material | Iron |
| Material Specification | Ams 5737 assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1189 professional/industrial association standard |
| Surface Finish | 32.0 microinches grip |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.186 inches minimum and 0.267 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNJC |
| Thread Size | 4 |
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.
- NAS1189E04P5L NAS #4-40 · 5/16 in · Flat countersunk · Iron
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error