screws › close tolerance screws
NAS1189E04P6
Close Tolerance Screw
Description
Fastener Length: 3/8", Thread: 4-40, Thread Length: 5/16", NAS1189 series screw
Specifications
| Countersink Angle | 100.0 degrees |
|---|---|
| Fastener Length | 0.344 inches minimum and 0.375 inches maximum |
| Head Diameter | 0.213 inches minimum and 0.225 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 3/8 |
| Locking Feature | Patch threads or strip threads |
| Material | Steel |
| Specification Data | 80205-nas1189 professional/industrial association standard |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches threads |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty 2 cl 2 fed spec all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.317 |
| 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
No interchangeable or dimensionally similar parts are on record for NAS1189E04P6. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error