The Shaft,shouldered, cataloged under National Stock Number 3040-01-161-5122, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 10 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 | 3040-01-161-5122 |
| Primary Part Number | 170671 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 4 |
| First End Diameter | 0.2470 INCHES MINIMUM AND 0.2490 INCHES MAXIMUM IN |
| Second End Diameter | 0.3872 INCHES MINIMUM AND 0.3875 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.500 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5057 MIL SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | PLAIN |
| Material | STEEL COMP 303 |
| 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 |
|---|---|
| 170671 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
NSN 3040-01-161-5122 is a Shaft,shouldered, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-161-5122 has 1 manufacturer part number on file: 170671 (L3harris Technologies, Inc Div Space & Airborne Systems).
1 possible match (shared part number, not a government interchangeability claim): 6540-01-451-6044. Verify interchangeability with system specifications before substitution.
Key specifications for 170671: Surface Finish: 63.0 MICROINCHES; Step Quantity: 4; First End Diameter: 0.2470 INCHES MINIMUM AND 0.2490 INCHES MAXIMUM IN; Second End Diameter: 0.3872 INCHES MINIMUM AND 0.3875 INCHES MAXIMUM IN. 10 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.