The Shaft,shouldered, cataloged under National Stock Number 3040-01-307-7216, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-307-7216 |
| Primary Part Number | 501-6160771 DETAIL 6-5B |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Second End External Thread Length | 1.125 INCHES NOMINAL IN |
| Step Quantity | 5 |
| First End Diameter | 0.9975 INCHES NOMINAL IN |
| Second End Diameter | 0.7500 INCHES NOMINAL IN |
| Largest Step Diameter | 2.000 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| First End Keyway Depth | 0.147 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| Material | STEEL COMP 4340 |
| External Keyway Length | 1.000 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.2510 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 501-6160771 DETAIL 6-5B PRIMARY | Naval Sea Systems Command (USA) |
| 501-6160771 ITEM 18 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 501-6160771 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2680-1341 ITEM 18 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3040-01-307-7216 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-307-7216 has 2 manufacturer part numbers on file: 501-6160771 DETAIL 6-5B (Naval Sea Systems Command), 501-6160771 ITEM 18 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-307-7290, 2520-01-308-0573, 3040-01-310-1773. Verify interchangeability with system specifications before substitution.
Key specifications for 501-6160771 DETAIL 6-5B: Surface Finish: 125.0 MICROINCHES; Second End External Thread Length: 1.125 INCHES NOMINAL IN; Step Quantity: 5; First End Diameter: 0.9975 INCHES NOMINAL IN. 13 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.