The Collar,stop, cataloged under National Stock Number 3040-01-487-1658, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Collar,stop |
| FSC / FSG | 3040 — Miscellaneous Power Transmission Equipment (FSG 30) |
| Manufacturers | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (CAGE 0VP52) |
| Parameter | Value |
|---|---|
| NSN | 3040-01-487-1658 |
| Primary Part Number | MHC197 |
| Item Name | Collar,stop |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am |
| 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 |
| Part Number | Manufacturer |
|---|---|
| MHC197 | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (USA) |
| Reference | Meaning |
|---|---|
| 37693 | 5/9 Secondary reference Incom Intl Inc Morse Controls Div |
| 309908 | 5/9 Secondary reference Bob Littler Agencies Pty Ltd |
| 37693 | 3/9 Design control — primary reference Marine Acquisition (us) Incorporated Div Prime Line Industrial Controls |
| 309908 | C/1 Advisory reference — outside the item-of-supply concept Bla Distribution Aus Holdco Pty Ltd |
NSN 3040-01-487-1658 is a Collar,stop, manufactured by Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-487-1658 has 1 manufacturer part number on file: MHC197 (Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-593-3521. Verify interchangeability with system specifications before substitution.
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.