The Shaft,shouldered, cataloged under National Stock Number 3040-01-156-5490, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-01-156-5490 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 0.8720 INCHES MINIMUM AND 0.8740 INCHES MAXIMUM IN |
| First End Distance From Keyway Center to End | 0.8480 INCHES NOMINAL IN |
| Second End Diameter | 0.9960 INCHES MINIMUM AND 0.9980 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.2460 INCHES MINIMUM AND 1.2480 INCHES MAXIMUM IN |
| Second End Distance From Keyway Center to End | 2.2250 INCHES NOMINAL IN |
| First End Style | INDENTED FLAT KEYWAY |
| Second End Keyway Width | 0.2500 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.1030 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.1390 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | STEEL COMP 304 |
| External Keyway Length | 1.4500 INCHES NOMINAL FIRST END IN |
| External Keyway Length | 2.0750 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.1880 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 709-4684910 ITEM 46 | 3/2 Design control — primary reference U.S. Government activity |
| 87832-1639 ITEM 46 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-156-5490 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-156-5490: Surface Finish: 125.0 MICROINCHES; Step Quantity: 3; First End Diameter: 0.8720 INCHES MINIMUM AND 0.8740 INCHES MAXIMUM IN; First End Distance From Keyway Center to End: 0.8480 INCHES NOMINAL IN. 18 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.
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.