The Collar,shaft, cataloged under National Stock Number 3040-01-475-2311, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-475-2311 |
| Primary Part Number | 124-4322620 PC 8-90 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | PLAIN ROUND |
| Outside Diameter | 8.6875 INCHES MAXIMUM IN |
| Surface Treatment | ZINC AND CHROMATE |
| Bore Diameter | 6.3750 INCHES MAXIMUM IN |
| Material | STEEL |
| Thickness | 3.6250 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 |
| Part Number | Manufacturer |
|---|---|
| 124-4322620 PC 8-90 PRIMARY | Naval Sea Systems Command (USA) |
| 124-4322620 PC 8-95 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 4322620 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-475-2311 is a Collar,shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-475-2311 has 2 manufacturer part numbers on file: 124-4322620 PC 8-90 (Naval Sea Systems Command), 124-4322620 PC 8-95 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-475-5218. Verify interchangeability with system specifications before substitution.
Key specifications for 124-4322620 PC 8-90: Style Designator: PLAIN ROUND; Outside Diameter: 8.6875 INCHES MAXIMUM IN; Surface Treatment: ZINC AND CHROMATE; Part Name Assigned by Controlling Agency: COLLAR SPACER. 6 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.