The Piston,outer, cataloged under National Stock Number 4930-01-053-0190, is classified within Federal Supply Class 4930 (Lubrication and Fuel Dispensing Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Eaton Corporation Dba Eaton Inoac. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | Piston,outer |
| FSC / FSG | 4930 — Lubrication and Fuel Dispensing Equipment (FSG 49) |
| Manufacturers | Eaton Corporation Dba Eaton Inoac (CAGE 0DT23) |
| Parameter | Value |
|---|---|
| NSN | 4930-01-053-0190 |
| Primary Part Number | 23889 |
| Item Name | Piston,outer |
| FSC / FSG | 4930 / 49 — Lubrication and Fuel Dispensing Equipment |
| Manufacturer | Eaton Corporation Dba Eaton Inoac |
| 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 |
|---|---|
| 23889 PRIMARY | Eaton Corporation Dba Eaton Inoac (USA) |
| Reference | Meaning |
|---|---|
| 10314712 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 23889 | 5/9 Secondary reference U.S. Government activity |
NSN 4930-01-053-0190 is a Piston,outer, manufactured by Eaton Corporation Dba Eaton Inoac, classified under FSC 4930, Lubrication and Fuel Dispensing Equipment. Status: active.
NSN 4930-01-053-0190 has 1 manufacturer part number on file: 23889 (Eaton Corporation Dba Eaton Inoac).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-300-4953, 6150-01-613-4228. 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.