The Nipple,inlet, cataloged under National Stock Number 4220-01-172-4056, is classified within Federal Supply Class 4220 (Marine Lifesaving and Diving Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Kirby Morgan Dive Systems Inc. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Nipple,inlet |
| FSC / FSG | 4220 — Marine Lifesaving and Diving Equipment (FSG 42) |
| Manufacturers | Jfd Ltd (CAGE U9992); Jfd Australia Pty Ltd James Fisher Australia Pty Ltd (CAGE Z01M1); Kirby Morgan Dive Systems Inc (CAGE 58366); Honeywell Aerospace Yeovil Div Aerospace -Yeovil (CAGE U1605) |
| Parameter | Value |
|---|---|
| NSN | 4220-01-172-4056 |
| Primary Part Number | 550-048 |
| Item Name | Nipple,inlet |
| FSC / FSG | 4220 / 42 — Marine Lifesaving and Diving Equipment |
| Manufacturer | Kirby Morgan Dive Systems Inc |
| 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 |
|---|---|
| DE059 | Jfd Ltd (GBR) |
| DE059 | Jfd Australia Pty Ltd James Fisher Australia Pty Ltd (AUS) |
| 550-048 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
| 9142Y137 | Honeywell Aerospace Yeovil Div Aerospace -Yeovil (GBR) |
| Reference | Meaning |
|---|---|
| DP5848 | 5/9 Secondary reference Ministry of Defence, De&s Underwater and Electronic Warfare Pt (uew Ipt) |
| DP5848 | 5/9 Secondary reference Ministry of Defence, De&s Underwater and Electronic Warfare Pt (uew Ipt) |
| 18-48B | 5/9 Secondary reference Kirby Morgan Dive Systems Inc |
NSN 4220-01-172-4056 is a Nipple,inlet, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4220, Marine Lifesaving and Diving Equipment. Status: active.
NSN 4220-01-172-4056 has 4 manufacturer part numbers on file: DE059 (Jfd Ltd), DE059 (Jfd Australia Pty Ltd James Fisher Australia Pty Ltd), 550-048 (Kirby Morgan Dive Systems Inc), 9142Y137 (Honeywell Aerospace Yeovil Div Aerospace -Yeovil).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-331-1657. 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.