The Nut,tube Coupling, cataloged under National Stock Number 4730-01-501-8763, 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 2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-501-8763 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Nominal Tube Outside Diameter | 0.250 INCHES 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 |
|---|---|
| 9955-005-003 | D/9 Drawing number reference only Acorn Engineering Company Dba Whitehall Manufacturing Co |
| 9955-005-003 ITEM 9 | 5/9 Secondary reference Acorn Engineering Company Dba Whitehall Manufacturing Co |
| 1895-451-000 | 3/9 Design control — primary reference Acorn Engineering Company Dba Whitehall Manufacturing Co |
NSN 4730-01-501-8763 is a Nut,tube Coupling, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-501-9227, 4730-01-501-9573. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-501-8763: Thread Direction: RIGHT-HAND; Part Name Assigned by Controlling Agency: 1/4 INCH FERRULE NUT IN; End Item Identification: LAV-TOILET CO - .5 GPM; Nominal Tube Outside Diameter: 0.250 INCHES IN. 2 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.