The Coupling,tube, cataloged under National Stock Number 4730-01-233-8036, 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 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-233-8036 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | FLARED (TUBE) FIRST END |
| Connection Style | GROOVED (TUBE) SECOND END |
| Nominal Overall Length | 1.500 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE SECOND END |
| Style Designator | RIGID, CENTER WRENCHING FACILITY |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Thread Class | 2A FIRST END A |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNF FIRST END |
| 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 |
|---|---|
| B-4-TA-1-4AN | 3/9 Design control — primary reference Cajon Co |
| B-4-TA-1-4AN | 5/9 Secondary reference Swagelok Co |
| CV0181-005 | 5/9 Secondary reference Northrop Grumman Corp Electronic Systems Defensive System Div |
NSN 4730-01-233-8036 is a Coupling,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-233-8036: Connection Style: FLARED (TUBE) FIRST END; Connection Style: GROOVED (TUBE) SECOND END; Nominal Overall Length: 1.500 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST END. 12 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.