The Restrictor,fluid Flow, cataloged under National Stock Number 4730-00-939-8510, 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 Solar Turbines Incorporated Dba Solar Turbines Incorporated. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-939-8510 |
| Primary Part Number | 31465-1 |
| Item Name | Restrictor,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Solar Turbines Incorporated Dba Solar Turbines Incorporated |
| Status | ACTIVE |
| Length | 1.094 INCHES NOMINAL IN |
| Thread Provision | THREADED LOCATION NOT OTHERWISE SPECIFIED |
| Design Type | TUBULAR, HEX SHAPE |
| Thread Series | UNF SECOND PROVISION |
| Thread Series | UNF FIRST PROVISION |
| Thread Length | 0.375 INCHES NOMINAL FIRST PROVISION IN |
| Thread Length | 0.622 INCHES MINIMUM AND 0.632 INCHES MAXIMUM SECOND PROVISION IN |
| Hose/tube Size for Which Designed | 1/8 IN. OD TUBE AND 1/4 IN. OD TUBE IN |
| Outside Diameter | 0.688 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND FIRST PROVISION |
| Thread Direction | RIGHT-HAND SECOND PROVISION |
| Thread Size Designator | 5/16-24 FIRST PROVISION |
| Thread Size Designator | 7/16-20 SECOND PROVISION |
| Thread Class | 3A SECOND PROVISION A |
| Thread Class | 3A FIRST PROVISION A |
| Material | STEEL |
| Orifice Diameter | 0.094 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 |
|---|---|
| 31465-1 PRIMARY | Solar Turbines Incorporated Dba Solar Turbines Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 31465-1 | 5/9 Secondary reference Rtx Corporation Div Pratt & Whitney |
NSN 4730-00-939-8510 is a Restrictor,fluid Flow, manufactured by Solar Turbines Incorporated Dba Solar Turbines Incorporated, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-939-8510 has 1 manufacturer part number on file: 31465-1 (Solar Turbines Incorporated Dba Solar Turbines Incorporated).
2 possible matches (shared part number, not a government interchangeability claim): 5935-01-062-2445, 5330-01-682-1597. Verify interchangeability with system specifications before substitution.
Key specifications for 31465-1: Length: 1.094 INCHES NOMINAL IN; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: TUBULAR, HEX SHAPE; Thread Series: UNF SECOND PROVISION. 17 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.