The Plug,oil Drain,airc, cataloged under National Stock Number 4920-01-557-5121, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Kohler Co Engine Plant Div. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Plug,oil Drain,airc |
| FSC / FSG | 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment (FSG 49) |
| Manufacturers | Kohler Co Engine Plant Div (CAGE 52845) |
| Parameter | Value |
|---|---|
| NSN | 4920-01-557-5121 |
| Primary Part Number | ED0090400120-S |
| Item Name | Plug,oil Drain,airc |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Kohler Co Engine Plant Div |
| 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 |
|---|---|
| ED0090400120-S PRIMARY | Kohler Co Engine Plant Div (USA) |
| Reference | Meaning |
|---|---|
| 9040.012 | 5/9 Secondary reference Lombardini U.s.a., Inc |
NSN 4920-01-557-5121 is a Plug,oil Drain,airc, manufactured by Kohler Co Engine Plant Div, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-557-5121 has 1 manufacturer part number on file: ED0090400120-S (Kohler Co Engine Plant Div).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-721-2428. 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.