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NAS1189-4T9L
Screw
Description
Fastener Length: 3/16", Thread: 4-40, Thread Length: 5/64"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.156 inches minimum and 0.188 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 0.213 inches minimum and 0.225 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Offset cruciform (torque set) |
| Length | 3/16 |
| Locking Feature | Patch threads or strip threads |
| Material | Steel |
| Material Specification | Nas 498 assn std single material response |
| Specification Data | 80205-nas1189 professional/industrial association standard |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,type 2,class 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.062 inches minimum and 0.093 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.
- NAS1189-4T9L
- NAS1189-4T10L
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1189-4T9L. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error