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NAS1189-04P6
Machine Screw
Description
Fastener Length: 3/8", Thread: 4-40, Thread Length: 21/64"
Specifications
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
|---|---|
| Fastener Length | Between 0.344 inches and 0.375 inches |
| Hardness Rating | 36.0 rockwell c and 40.0 rockwell c |
| Head Diameter | Between 0.177 inches and 0.225 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 3/8 |
| Material | Steel |
| Material Specification | Ams 6300 assn standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Surface Finish | 32.0 microinches bearing surface of head, 32.0 microinches threads |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Cl 3 federal specification single treatment response type 2 qq-416 |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.249 inches and 0.330 inches |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1189-04P3
- NAS1189-04P4
- NAS1189-04P6
- NAS1189-04P10
- NAS1189-04P10L
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.
- MS24693-B4 MS #4-40 · 3/8 in · Flat countersunk
- NAS1102-04-6B NAS #4-40 · 3/8 in · Flat countersunk · Steel
- NAS1102E04-6 NAS #4-40 · 3/8 in · Flat countersunk · Iron
- NAS1102E04-6P NAS #4-40 · 3/8 in · Flat countersunk · Iron
- NAS514P440-6 NAS #4-40 · 3/8 in · Flat countersunk · Steel
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Catalog data updated 2026-07-05. Report a data error