The Nipple,hose, cataloged under National Stock Number 4730-01-331-1657, 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 Kirby Morgan Dive Systems Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-331-1657 |
| Primary Part Number | 550-048 |
| Item Name | Nipple,hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Kirby Morgan Dive Systems Inc |
| Status | ACTIVE |
| FSC Application Data | MK21 MOD1 DIVING HELMET |
| 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 |
|---|---|
| 592-6318366 | Naval Sea Systems Command (USA) |
| 550-048 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
NSN 4730-01-331-1657 is a Nipple,hose, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-331-1657 has 2 manufacturer part numbers on file: 592-6318366 (Naval Sea Systems Command), 550-048 (Kirby Morgan Dive Systems Inc).
Key specifications for 550-048: FSC Application Data: MK21 MOD1 DIVING HELMET. 1 specification is documented in the U.S. Government catalog.
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.