The Reducer,tube, cataloged under National Stock Number 4730-01-689-3785, 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 9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-689-3785 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-18866 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | INVERTED FLARE (TUBE) SECOND END |
| Nominal Length | 1.470 INCHES ALL ENDS IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | MS515534 MIL STD SINGLE MATERIAL RESPONSE OVERALL |
| Seat Angle | 37.0 DEGREES SECOND END |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| MS51534 | 5/9 Secondary reference U.S. Government activity |
| MS51534B16-12Z | 2/2 Government specification standardization U.S. Government activity |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
NSN 4730-01-689-3785 is a Reducer,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-689-3785: Surface Treatment Document and Classification: MIL-F-18866 MIL STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: INVERTED FLARE (TUBE) SECOND END; Nominal Length: 1.470 INCHES ALL ENDS IN; Connection Type: THREADED EXTERNAL TUBE FIRST END. 9 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.