The Adapter Bushing, cataloged under National Stock Number 4730-00-901-4994, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4730-00-901-4994 |
| Item Name | Adapter Bushing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Width Across Flats | 0.438 INCHES NOMINAL IN |
| Female End Characteristic | COUNTERBORED |
| Counterbore/countersink Location | AT EXTERNALLY THD END |
| Male End Thread Size | 3/8-32 |
| Female End Thread Length | 0.251 INCHES NOMINAL IN |
| Female End Thread Class | 2B |
| Diameter | 0.200 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Female End Thread Size | 10-32 |
| Wrenching Facility Shape | HEXAGON |
| Male End Screw Thread Series Designator | UNEF |
| Surface Treatment | PASSIVATE |
| Chamfer Angle in Deg | 45.0 LOCATION NOT OTHERWISE SPECIFIED |
| Depth | 0.187 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Female End Screw Thread Series Designator | UNF |
| Male End Thread Class | 2A A |
| Material | STEEL CORROSION RESISTING |
| Male End Thread Length | 0.250 INCHES NOMINAL IN |
| Thickness | 0.094 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 |
| Reference | Meaning |
|---|---|
| 130454 | 3/9 Design control — primary reference American Telephone and Telegraph Co |
| 130454 | C/1 Advisory reference — outside the item-of-supply concept Lucent Technologies Inc Corporate Headquarters |
| 130454 | 5/9 Secondary reference At and T Corp |
NSN 4730-00-901-4994 is a Adapter Bushing, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4920-01-478-6335. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-00-901-4994: Width Across Flats: 0.438 INCHES NOMINAL IN; Female End Characteristic: COUNTERBORED; Counterbore/countersink Location: AT EXTERNALLY THD END; Male End Thread Size: 3/8-32. 18 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.