The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-01-312-2038, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-312-2038 |
| Item Name | Restrictor Unit,fluid Flow |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Strainer Type and Quantity | 1 SCREEN |
| Design Type | ANGULAR |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY SCREENING |
| Angle in Deg | 90.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 99309 | D/9 Drawing number reference only U.S. Government activity |
| X45M-3-8IN-99309-01F | 3/2 Design control — primary reference U.S. Government activity |
| X45M-3-8IN-99309 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-312-2038 is a Restrictor Unit,fluid Flow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5998-01-316-6651, 2815-01-617-2788. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-312-2038: Strainer Type and Quantity: 1 SCREEN; Design Type: ANGULAR; Material: COPPER ALLOY BODY; Material: NICKEL ALLOY SCREENING. 5 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.