The Shaft,drum, cataloged under National Stock Number 2040-00-391-6502, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2040-00-391-6502 |
| Item Name | Shaft,drum |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| C3544-1 | 3/2 Design control — primary reference U.S. Government activity |
| C-3544-1 | C/1 Advisory reference — outside the item-of-supply concept Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division |
NSN 2040-00-391-6502 is a Shaft,drum, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1560-01-088-4510. Verify interchangeability with system specifications before substitution.
Key specifications for 2040-00-391-6502: End Item Identification: RAMP OPTG MECHM BOW ELHYD TY. 0 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.