The Nipple,boss, cataloged under National Stock Number 4730-01-628-3520, 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 Marine Electric Systems Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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,boss |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Marine Electric Systems Inc (CAGE 00062) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-628-3520 |
| Primary Part Number | 205517 |
| Item Name | Nipple,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Marine Electric Systems Inc |
| 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 |
|---|---|
| 205517 PRIMARY | Marine Electric Systems Inc (USA) |
| 402563ITEM2 | Marine Electric Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 402563 | D/9 Drawing number reference only Marine Electric Systems Inc |
NSN 4730-01-628-3520 is a Nipple,boss, manufactured by Marine Electric Systems Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-628-3520 has 2 manufacturer part numbers on file: 205517 (Marine Electric Systems Inc), 402563ITEM2 (Marine Electric Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-628-4291. 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.