The Union,tube, cataloged under National Stock Number 4730-00-159-8310, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-159-8310 |
| Primary Part Number | A11433 |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Connection Style | SOCKET (TUBE) ALL ENDS |
| Union Joint Location | FIRST END |
| Coupling Flange Shape | ROUND |
| Nominal Overall Length | 2.016 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Style Designator | SCREWED |
| Material Document and Classification | ASTMB145,ALLOY 4B ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.879 INCHES ALL ENDS IN |
| Seat Type | BEVELED |
| Material | COPPER ALLOY OR COPPER ALLOY 838 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 |
|---|---|
| A11433 | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| 11242195-3 | 3/9 Design control — primary reference Ballistic Missile Defense Systems Command |
NSN 4730-00-159-8310 is a Union,tube, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-159-8310 has 1 manufacturer part number on file: A11433 (Mueller Brass Co.).
1 possible match (shared part number, not a government interchangeability claim): 2540-00-700-2980. Verify interchangeability with system specifications before substitution.
Key specifications for A11433: Connection Style: SOCKET (TUBE) ALL ENDS; Union Joint Location: FIRST END; Coupling Flange Shape: ROUND; Nominal Overall Length: 2.016 INCHES IN. 10 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.