The Switch and Ring Ass, cataloged under National Stock Number 2990-01-110-8453, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Switch and Ring Ass |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-110-8453 |
| Item Name | Switch and Ring Ass |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Reference | Meaning |
|---|---|
| 389856 | 5/9 Secondary reference U.S. Government activity |
| 0389856 | 5/9 Secondary reference Outboard Marine Corp Johnson Motors Div |
| 389856 | 5/9 Secondary reference Evinrude Motors Product Group of Outboard Marine Corp |
| 0389856 | 3/9 Design control — primary reference Evinrude Motors Product Group of Outboard Marine Corp |
| 387852 | 5/9 Secondary reference Outboard Marine Corp Johnson Motors Div |
| 0389856 | 5/9 Secondary reference U.S. Government activity |
| 389856 | C/1 Advisory reference — outside the item-of-supply concept Brp Us Inc |
| 0389856 | C/1 Advisory reference — outside the item-of-supply concept Brp Us Inc |
| 389856 | 5/9 Secondary reference Outboard Marine Corp Johnson Motors Div |
NSN 2990-01-110-8453 is a Switch and Ring Ass, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5930-01-188-2290, 3040-01-348-8043. 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.