The Retainer,piston, cataloged under National Stock Number 4320-01-243-8849, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Retainer,piston |
| FSC / FSG | 4320 — Power and Hand Pumps (FSG 43) |
| Manufacturers | Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc (CAGE 15152); B. & R. Machine & Tool Corp (CAGE 66936); Capy Machine Shop Inc. Dba Capy Machine Shop Inc (CAGE 0BVP9) |
| Parameter | Value |
|---|---|
| NSN | 4320-01-243-8849 |
| Primary Part Number | 42312D42 |
| Item Name | Retainer,piston |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc |
| 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 |
|---|---|
| 42312D42 | Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc (USA) |
| 42312D42 | B. & R. Machine & Tool Corp (USA) |
| 42312D42 | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| Reference | Meaning |
|---|---|
| 42312-42 | 3/2 Design control — primary reference U.S. Government activity |
| 42312D42 | 5/9 Secondary reference U.S. Government activity |
NSN 4320-01-243-8849 is a Retainer,piston, manufactured by Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-243-8849 has 3 manufacturer part numbers on file: 42312D42 (Pcx Aerosystems-Manchester, Llc Dba Pcx Aerosystems - Manchester Llc), 42312D42 (B. & R. Machine & Tool Corp), 42312D42 (Capy Machine Shop Inc. Dba Capy Machine Shop Inc).
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.