The Retainer,coupling, cataloged under National Stock Number 4730-01-554-4191, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Mra Systems, Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Retainer,coupling |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Ge Engine Services Distribution, L.l.c. (CAGE 062W0); Mra Systems, Llc (CAGE 1B6R3) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-554-4191 |
| Primary Part Number | 491B1330036-001 |
| Item Name | Retainer,coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mra Systems, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 491B1330036-001 | Ge Engine Services Distribution, L.l.c. (USA) |
| 491B1330036-001 PRIMARY | Mra Systems, Llc (USA) |
NSN 4730-01-554-4191 is a Retainer,coupling, manufactured by Mra Systems, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-554-4191 has 2 manufacturer part numbers on file: 491B1330036-001 (Ge Engine Services Distribution, L.l.c.), 491B1330036-001 (Mra Systems, Llc).
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.