The Tee,pipe to Tube, cataloged under National Stock Number 4730-01-138-8371, 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 Swagelok Co. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-138-8371 |
| Primary Part Number | SS810-3TTF |
| Item Name | Tee,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 TUBE COUPLING NUT AND 4 FERRULE SLEEVE |
| Connection Style | PLAIN (PIPE) THIRD END |
| Connection Style | FLARELESS (TUBE) SECOND END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED INTERNAL PIPE THIRD END |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Leg Length | 0.880 INCHES NOMINAL THIRD END IN |
| Leg Length | 1.030 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.030 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.750 INCHES SECOND END IN |
| Nominal Thread Size | 0.375 INCHES THIRD END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Seat Angle | 12.0 DEGREES SECOND END |
| Seat Angle | 12.0 DEGREES FIRST END |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | NPT THIRD END |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) FIRST END |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SECOND 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 |
|---|---|
| 8-3TTF-6 | Tylok International, Inc. (USA) |
| 8-8-6 0BZ-SS | Parker Hannifin Corp Stratoflex Div Aircraft Fittings Opn (USA) |
| SS810-3TTF PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| 8-8-60BZ | 5/9 Secondary reference Parker Hannifin Corp Stratoflex Div Aircraft Fittings Opn |
NSN 4730-01-138-8371 is a Tee,pipe to Tube, manufactured by Swagelok Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-138-8371 has 3 manufacturer part numbers on file: 8-3TTF-6 (Tylok International, Inc.), 8-8-6 0BZ-SS (Parker Hannifin Corp Stratoflex Div Aircraft Fittings Opn), SS810-3TTF (Swagelok Co).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-594-2224. Verify interchangeability with system specifications before substitution.
Key specifications for SS810-3TTF: Furnished Items and Quantity: 2 TUBE COUPLING NUT AND 4 FERRULE SLEEVE; Connection Style: PLAIN (PIPE) THIRD END; Connection Style: FLARELESS (TUBE) SECOND END; Connection Style: FLARELESS (TUBE) FIRST END. 23 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.