The Tailpiece,union, cataloged under National Stock Number 4730-00-159-8314, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-159-8314 |
| Primary Part Number | W80018 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Material Hardness Rating | 85.0 ROCKWELL F MINIMUM |
| Flange Thickness | 0.060 INCHES NOMINAL IN |
| End Connection Type | SWEAT SOLDER |
| Seat Type | BALL |
| Tubing Outside Diameter | 0.377 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Seat Radius | 0.170 INCHES NOMINAL IN |
| Flange Outside Diameter | 0.720 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 |
| Part Number | Manufacturer |
|---|---|
| W80018 | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| 11308384 | 3/9 Design control — primary reference Ballistic Missile Defense Systems Command |
NSN 4730-00-159-8314 is a Tailpiece,union, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-159-8314 has 1 manufacturer part number on file: W80018 (Mueller Brass Co.).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-315-0469. Verify interchangeability with system specifications before substitution.
Key specifications for W80018: Material Hardness Rating: 85.0 ROCKWELL F MINIMUM; Flange Thickness: 0.060 INCHES NOMINAL IN; End Connection Type: SWEAT SOLDER; Overall Length: 0.650 INCHES NOMINAL IN. 7 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.