The Tee,pipe to Tube, cataloged under National Stock Number 4730-00-996-8317, 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 Textron Aviation Inc. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-996-8317 |
| Primary Part Number | S1139-1 |
| Item Name | Tee,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.125 INCHES SECOND END IN |
| Connection Style | COMPRESSION (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Style | COMPRESSION (TUBE) THIRD END |
| Seat Nominal Radius | 0.062 INCHES FIRST END IN |
| Seat Nominal Radius | 0.062 INCHES THIRD END IN |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE THIRD END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES THIRD END IN |
| Leg Length | 0.750 INCHES NOMINAL SECOND END IN |
| Leg Length | 0.719 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.438 INCHES THIRD END IN |
| Nominal Thread Size | 0.125 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Thread Class | 2A FIRST END A |
| Thread Class | 2A THIRD END A |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | UNF THIRD END |
| Thread Series Designator | UNF FIRST END |
| 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 |
|---|---|
| S1139-1 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| S1139-1 | 3/9 Design control — primary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 4730-00-996-8317 is a Tee,pipe to Tube, manufactured by Textron Aviation Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-996-8317 has 1 manufacturer part number on file: S1139-1 (Textron Aviation Inc).
Key specifications for S1139-1: Nominal Pipe Size Accommodated: 0.125 INCHES SECOND END IN; Connection Style: COMPRESSION (TUBE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Connection Style: COMPRESSION (TUBE) THIRD END. 22 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.