The Shaft,shouldered, cataloged under National Stock Number 3040-01-327-5988, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-327-5988 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 1.4990 INCHES NOMINAL IN |
| Second End Diameter | 1.4990 INCHES NOMINAL IN |
| Largest Step Diameter | 1.937 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 4.3750 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| Second End Keyway Width | 0.3740 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM-A-322 ASSN STD SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN |
| Second End Keyway Depth | 0.213 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | STEEL COMP 8620 |
| External Keyway Length | 2.750 INCHES NOMINAL SECOND END IN |
| External Keyway Length | 2.560 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.3740 INCHES MINIMUM AND 0.3750 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 |
|---|---|
| 105K0739 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3040-01-327-5988 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-327-5988: Surface Finish: 32.0 MICROINCHES; Step Quantity: 3; First End Diameter: 1.4990 INCHES NOMINAL IN; Second End Diameter: 1.4990 INCHES NOMINAL IN. 17 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.