The Shaft,shouldered, cataloged under National Stock Number 3040-00-416-2941, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Qioptiq Ltd. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-416-2941 |
| Primary Part Number | 001551 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Qioptiq Ltd |
| Status | ACTIVE |
| Step Quantity | 4 |
| First End Diameter | 0.1230 INCHES MINIMUM AND 0.1270 INCHES MAXIMUM IN |
| First End Flat Depth | 0.0230 INCHES MINIMUM AND 0.0270 INCHES MAXIMUM IN |
| Second End Diameter | 0.1871 INCHES MINIMUM AND 0.1876 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.415 INCHES MINIMUM AND 0.425 INCHES MAXIMUM IN |
| First End Style | FLATTED |
| Material Document and Classification | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.1735 INCHES MINIMUM AND 0.1765 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0180 INCHES MINIMUM AND 0.0200 INCHES MAXIMUM IN |
| Second End Distance From End to Groove | 0.060 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Second End Style | CIRCULAR GROOVED |
| First End Flat Length | 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Material | STEEL |
| 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 |
|---|---|
| 001551 PRIMARY | Qioptiq Ltd (GBR) |
NSN 3040-00-416-2941 is a Shaft,shouldered, manufactured by Qioptiq Ltd, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-416-2941 has 1 manufacturer part number on file: 001551 (Qioptiq Ltd).
1 possible match (shared part number, not a government interchangeability claim): 6509-01-487-4224. Verify interchangeability with system specifications before substitution.
Key specifications for 001551: Step Quantity: 4; First End Diameter: 0.1230 INCHES MINIMUM AND 0.1270 INCHES MAXIMUM IN; First End Flat Depth: 0.0230 INCHES MINIMUM AND 0.0270 INCHES MAXIMUM IN; Second End Diameter: 0.1871 INCHES MINIMUM AND 0.1876 INCHES MAXIMUM IN. 14 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.