The Tee,pipe to Tube, cataloged under National Stock Number 4730-01-231-2758, 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 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-231-2758 |
| Primary Part Number | 8TTF6-316 |
| Item Name | Tee,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 TUBE COUPLING NUT W/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 | 1.062 INCHES NOMINAL THIRD END IN |
| Leg Length | 1.125 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.125 INCHES NOMINAL SECOND 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 | 20.0 DEGREES SECOND END |
| Seat Angle | 20.0 DEGREES FIRST END |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | NPT THIRD END |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF 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 |
|---|---|
| 8TTF6-316 | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
| 8FBT6N-316 | Parker-Hannifin Corporation Div Instrumentation Products Division (USA) |
| CV0096-111 | Northrop Grumman Corp Electronic Systems Defensive System Div (USA) |
| SS8-3TTF-6 | Tylok International, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SS-810-3-8TTF | 3/9 Design control — primary reference Swagelok Co Dba Use CAGE Code 3t9t9 for Cataloging |
| 5114-4632-1 | C/1 Advisory reference — outside the item-of-supply concept Nordam Group Llc, the Div Nordam |
NSN 4730-01-231-2758 is a Tee,pipe to Tube, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-231-2758 has 4 manufacturer part numbers on file: 8TTF6-316 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), 8FBT6N-316 (Parker-Hannifin Corporation Div Instrumentation Products Division), CV0096-111 (Northrop Grumman Corp Electronic Systems Defensive System Div), SS8-3TTF-6 (Tylok International, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-473-3290, 4730-01-594-2223. Verify interchangeability with system specifications before substitution.
Key specifications for 8TTF6-316: Furnished Items and Quantity: 2 TUBE COUPLING NUT W/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.