The Union,tube, cataloged under National Stock Number 4730-01-533-7283, 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 Johnson Controls Navy Systems, Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-533-7283 |
| Primary Part Number | 023-18771 |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 TAILPIECE AND 1 UNION NUT AND 1 PREFORMED PACKING |
| Connection Style | SOCKET (TUBE) SECOND END |
| Connection Style | PLAIN (TUBE) FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Style Designator | UNTHREADED |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Material | NICKEL AND COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 023-18771 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| 377-13259-000 ITEM 173 | Johnson Controls Navy Systems, Llc (USA) |
NSN 4730-01-533-7283 is a Union,tube, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-533-7283 has 2 manufacturer part numbers on file: 023-18771 (Johnson Controls Navy Systems, Llc), 377-13259-000 ITEM 173 (Johnson Controls Navy Systems, Llc).
Key specifications for 023-18771: Furnished Items and Quantity: 2 TAILPIECE AND 1 UNION NUT AND 1 PREFORMED PACKING; Connection Style: SOCKET (TUBE) SECOND END; Connection Style: PLAIN (TUBE) FIRST END; Connection Type: UNTHREADED EXTERNAL TUBE FIRST END. 9 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.