The Piston Kit, cataloged under National Stock Number 4820-01-186-4231, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parts Center. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 Kit |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Parts Center (CAGE U0095) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-186-4231 |
| Primary Part Number | 20-4040-00K |
| Item Name | Piston Kit |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parts Center |
| 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 |
|---|---|
| 20-4040-00K | Parts Center (GBR) |
| Reference | Meaning |
|---|---|
| 200760 | 3/2 Design control — primary reference U.S. Government activity |
| 20-4040-00K | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-186-4231 is a Piston Kit, manufactured by Parts Center, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-186-4231 has 1 manufacturer part number on file: 20-4040-00K (Parts Center).
3 possible matches (shared part number, not a government interchangeability claim): 3110-01-204-1985, 5340-01-304-5240, 3040-01-618-7332. 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.