The Tee,tube, cataloged under National Stock Number 4730-00-277-8170, 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 13 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through both NSN and commercial part number lookups. 26 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-277-8170 |
| Primary Part Number | A1427 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Connection Style | SOCKET (TUBE) SECOND END |
| Connection Style | SOCKET (TUBE) THIRD END |
| Connection Style | SOCKET (TUBE) FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Connection Type | UNTHREADED INTERNAL TUBE THIRD END |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES THIRD END IN |
| Leg Length | 0.750 INCHES NOMINAL THIRD END IN |
| Leg Length | 0.812 INCHES NOMINAL SECOND END IN |
| Leg Length | 0.812 INCHES NOMINAL FIRST END IN |
| Material | 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 |
|---|---|
| A1427 PRIMARY | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| W8119857ITEM20 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119871ITEM16 | 5/9 Secondary reference General Electric Company |
| W8119858ITEM20 | 5/9 Secondary reference General Electric Company |
| W8119870ITEM16 | 5/9 Secondary reference General Electric Company |
| W8119831PC91 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119868ITEM16 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119831PC91 | 5/9 Secondary reference General Electric Company |
| W8119866ITEM23 | 5/9 Secondary reference General Electric Company |
| W8119856ITEM20 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119870ITEM16 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119656-5 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119806PC9 | 5/9 Secondary reference General Electric Company |
| W8119866ITEM23 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119867ITEM23 | 5/9 Secondary reference General Electric Company |
| W8119859ITEM20 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119869ITEM16 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
| W8119656-5 | 5/9 Secondary reference General Electric Company |
| W8119856ITEM20 | 5/9 Secondary reference General Electric Company |
| W8119868ITEM16 | 5/9 Secondary reference General Electric Company |
| W8119859ITEM20 | 5/9 Secondary reference General Electric Company |
NSN 4730-00-277-8170 is a Tee,tube, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-277-8170 has 1 manufacturer part number on file: A1427 (Mueller Brass Co.).
1 possible match (shared part number, not a government interchangeability claim): 5961-00-958-3058. Verify interchangeability with system specifications before substitution.
Key specifications for A1427: Connection Style: SOCKET (TUBE) SECOND END; Connection Style: SOCKET (TUBE) THIRD END; Connection Style: SOCKET (TUBE) FIRST END; Connection Type: UNTHREADED INTERNAL TUBE FIRST END. 13 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.