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MS16998-47L
Military Standard Socket Head Screw
Description
Fastener Length: 1-1/2", Thread: 1/4-28, Head Width: 3/16", Thread Length: 0-63/64"
Specifications
| Fastener Length | 1.460 inches minimum and 1.500 inches maximum |
|---|---|
| Hardness Rating | 38.0 rockwell c minimum and 45.0 rockwell c maximum |
| Head Diameter | 0.365 inches minimum and 0.375 inches maximum |
| Head Height | 0.244 inches minimum and 0.250 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1 1/2 |
| Locking Feature | Strip threads or patch threads |
| Material | Steel |
| Min. Tensile Strength (psi) | 180000 pounds per square inch |
| Minimum Yield Strength | 170000 pounds per square inch |
| Nondefinitive Specification/Std Data | 6 type |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty2 cl3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.960 inches minimum and 1.250 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Across Flats | 0.188 inches minimum and 0.190 inches maximum |
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.
- NAS1351-4LE20P NAS 1/4-28 · 0.073 in · Flat chamfer · Plastic
- MS16998-46L MS 1/4-28 · 0.073 in · Flat chamfer · Plastic
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Catalog data updated 2026-07-05. Report a data error