The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-139-7405, 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 Triumph Engine Control Systems Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-139-7405 |
| Primary Part Number | 97476 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Strainer Type and Quantity | 1 SCREEN |
| Design Type | STRAIGHT |
| End Connection Type | ANY ACCEPTABLE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING SCREENING |
| Material | STEEL CORROSION RESISTING BODY |
| Orifice Diameter | 0.032 INCHES NOMINAL IN |
| End Connection Similarity | NOT IDENTICAL |
| 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 |
|---|---|
| 97476 | Triumph Engine Control Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 10108734 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 187-S-00750-1515 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-139-7405 is a Restrictor Unit,fluid Flow, manufactured by Triumph Engine Control Systems Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-139-7405 has 1 manufacturer part number on file: 97476 (Triumph Engine Control Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-483-9787. Verify interchangeability with system specifications before substitution.
Key specifications for 97476: Strainer Type and Quantity: 1 SCREEN; Design Type: STRAIGHT; End Connection Type: ANY ACCEPTABLE LOCATION NOT OTHERWISE SPECIFIED; Diameter: 0.186 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN. 8 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.