The Shaft,shouldered, cataloged under National Stock Number 3040-01-188-4031, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-188-4031 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| FSC Application Data | DETECTING-RANGING SET AN/AAS 38 |
| Step Quantity | 4 |
| First End Diameter | 0.0932 INCHES MINIMUM AND 0.0934 INCHES MAXIMUM IN |
| Second End Diameter | 0.2497 INCHES NOMINAL IN |
| Second End Step Length | 0.158 INCHES NOMINAL IN |
| Largest Step Diameter | 0.249 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | HEXAGONAL |
| Material | STEEL CORROSION RESISTING |
| Second End Width Across Flats | 0.146 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3081109-0001 | 5/9 Secondary reference U.S. Government activity |
| 3081111-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-188-4031 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-188-4031: FSC Application Data: DETECTING-RANGING SET AN/AAS 38; Step Quantity: 4; First End Diameter: 0.0932 INCHES MINIMUM AND 0.0934 INCHES MAXIMUM IN; Second End Diameter: 0.2497 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 3040-01-188-4031 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.