The Tailpiece,union, cataloged under National Stock Number 4730-00-159-8312, 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 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-159-8312 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Thickness | 0.140 INCHES NOMINAL IN |
| End Connection Type | SWEAT SOLDER |
| Seat Type | BALL |
| Tubing Outside Diameter | 0.628 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN |
| Seat Radius | 0.380 INCHES NOMINAL IN |
| Flange Outside Diameter | 1.060 INCHES NOMINAL 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 |
|---|---|
| 11308389 | 3/9 Design control — primary reference Ballistic Missile Defense Systems Command |
| A3092N | 5/9 Secondary reference Mueller Brass Co. |
NSN 4730-00-159-8312 is a Tailpiece,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-159-8312: Flange Thickness: 0.140 INCHES NOMINAL IN; End Connection Type: SWEAT SOLDER; Seat Type: BALL; Tubing Outside Diameter: 0.628 INCHES MINIMUM AND 0.631 INCHES MAXIMUM IN. 6 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.