The Collar,shaft, cataloged under National Stock Number 3040-01-502-3914, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-502-3914 |
| Primary Part Number | 596-7409667-1 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Internal Keyway Width | 0.624 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN |
| Largest Diameter Length | 1.310 INCHES NOMINAL IN |
| Style Designator | ROUND STEPPED |
| Outside Diameter | 5.375 INCHES MINIMUM AND 5.380 INCHES MAXIMUM IN |
| Keyway Quantity | 1 |
| Distance From Center of Bore to Bottom of Keyway | 1.422 INCHES NOMINAL IN |
| Small End Diameter | 3.542 INCHES MINIMUM AND 3.543 INCHES MAXIMUM IN |
| Bore Diameter | 2.3125 INCHES MINIMUM AND 2.3132 INCHES MAXIMUM IN |
| Material | STEEL |
| Thickness | 4.935 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 |
|---|---|
| 596-7409667-1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B831-2400-7 | 5/2 Secondary reference U.S. Government activity |
| 596-7409667-7 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 7409667 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-502-3914 is a Collar,shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-502-3914 has 1 manufacturer part number on file: 596-7409667-1 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 2030-01-502-6981, 2030-01-502-6989. Verify interchangeability with system specifications before substitution.
Key specifications for 596-7409667-1: Internal Keyway Width: 0.624 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN; Largest Diameter Length: 1.310 INCHES NOMINAL IN; Style Designator: ROUND STEPPED; Outside Diameter: 5.375 INCHES MINIMUM AND 5.380 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.