The Collar,shaft, cataloged under National Stock Number 3040-01-493-3397, 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 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-493-3397 |
| Primary Part Number | 596-7409312-7 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Distance From Center of Bore to Top of Key | 1.2935 INCHES NOMINAL IN |
| Counterbore Depth and Location | 0.3100 INCHES NOMINAL SINGLE HOLE IN |
| Internal Straight Key Width | 0.6240 INCHES MINIMUM AND 0.6260 INCHES MAXIMUM IN |
| Largest Diameter Length | 1.3100 INCHES NOMINAL IN |
| Style Designator | ROUND STEPPED |
| Outside Diameter | 5.3710 INCHES MINIMUM AND 5.3790 INCHES MAXIMUM IN |
| Key Quantity | 1 |
| Small End Diameter | 3.4960 INCHES MINIMUM AND 3.5040 INCHES MAXIMUM IN |
| Bore Diameter | 2.3122 INCHES MINIMUM AND 2.3125 INCHES MAXIMUM IN |
| Material | STEEL |
| Counterbore Diameter and Location | 4.3800 INCHES NOMINAL SINGLE HOLE IN |
| Thickness | 4.9350 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 |
|---|---|
| 596-7409312-7 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B541-1013-7 | 5/2 Secondary reference U.S. Government activity |
| 7409312 | D/9 Drawing number reference only Naval Sea Systems Command |
| B541-1013 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-493-3397 is a Collar,shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-493-3397 has 1 manufacturer part number on file: 596-7409312-7 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-493-3398, 3040-01-493-3399, 3020-01-494-2422. Verify interchangeability with system specifications before substitution.
Key specifications for 596-7409312-7: Distance From Center of Bore to Top of Key: 1.2935 INCHES NOMINAL IN; Counterbore Depth and Location: 0.3100 INCHES NOMINAL SINGLE HOLE IN; Internal Straight Key Width: 0.6240 INCHES MINIMUM AND 0.6260 INCHES MAXIMUM IN; Largest Diameter Length: 1.3100 INCHES NOMINAL IN. 12 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.