The Adapter Bushing, cataloged under National Stock Number 4730-01-355-7721, 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 Naval Sea Systems Command. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-355-7721 |
| Primary Part Number | 803-5959302-A-28 |
| Item Name | Adapter Bushing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Male End Thread Size | 1-20 |
| Female End Thread Length | 0.410 INCHES NOMINAL IN |
| Female End Thread Class | 2B |
| Male End Thread Direction | RIGHT-HAND |
| Female End Thread Size | 5/8-24 |
| Male End Screw Thread Series Designator | UNEF |
| Female End Screw Thread Series Designator | UNEF |
| Male End Thread Class | 2A A |
| Female End Thread Direction | RIGHT-HAND |
| Material | NICKEL ALLOY 400 |
| Male End Thread Length | 0.625 INCHES NOMINAL IN |
| 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 |
|---|---|
| 803-5959302-A-28 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-5959302 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-355-7721 is a Adapter Bushing, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-355-7721 has 1 manufacturer part number on file: 803-5959302-A-28 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-355-8100, 4730-01-678-2943. Verify interchangeability with system specifications before substitution.
Key specifications for 803-5959302-A-28: Male End Thread Size: 1-20; Female End Thread Length: 0.410 INCHES NOMINAL IN; Female End Thread Class: 2B; Overall Length: 0.625 INCHES NOMINAL IN. 11 specifications are 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.