The Stop,rotation, cataloged under National Stock Number 2040-00-972-8570, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Stop,rotation |
| FSC / FSG | 2040 — Marine Hardware and Hull Items (FSG 20) |
| Manufacturers | Northrop Grumman Systems Corporation (CAGE 03956); L3 Technologies, Inc. Div L3 Keo (CAGE 34228) |
| Parameter | Value |
|---|---|
| NSN | 2040-00-972-8570 |
| Primary Part Number | 547A002949 |
| Item Name | Stop,rotation |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 547A002949 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| A547-507 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| 002949 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 547A002949 | C/1 Advisory reference — outside the item-of-supply concept L3 Technologies, Inc. Div L3 Keo |
| 002949 | 5/9 Secondary reference Chatham Precision Inc |
| A547-507 | 5/9 Secondary reference Chatham Precision Inc |
NSN 2040-00-972-8570 is a Stop,rotation, manufactured by Northrop Grumman Systems Corporation, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-00-972-8570 has 3 manufacturer part numbers on file: 547A002949 (Northrop Grumman Systems Corporation), A547-507 (L3 Technologies, Inc. Div L3 Keo), 002949 (L3 Technologies, Inc. Div L3 Keo).
1 possible match (shared part number, not a government interchangeability claim): 5310-00-972-8571. 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.