The Union,pipe to Tube, cataloged under National Stock Number 4730-00-982-9290, 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 Mueller Brass Co.. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-982-9290 |
| Primary Part Number | A-11423 |
| Item Name | Union,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.750 INCHES SECOND END IN |
| Connection Style | SOCKET (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Coupling Flange Shape | HEXAGON |
| Nominal Overall Length | 2.546 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Style Designator | SCREWED |
| Nominal Outside Diameter Tube Accommodated | 0.875 INCHES FIRST END IN |
| Seat Type | GROUND-JOINT |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Material | COPPER ALLOY OVERALL |
| Material | COPPER ALLOY SEAT |
| Thread Series Designator | NPT SECOND END |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| A-11423 PRIMARY | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| 11242181-2 | 5/9 Secondary reference Ballistic Missile Defense Systems Command |
NSN 4730-00-982-9290 is a Union,pipe to Tube, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-982-9290 has 1 manufacturer part number on file: A-11423 (Mueller Brass Co.).
Key specifications for A-11423: Nominal Pipe Size Accommodated: 0.750 INCHES SECOND END IN; Connection Style: SOCKET (TUBE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Coupling Flange Shape: HEXAGON. 15 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.