The Reducer,pipe, cataloged under National Stock Number 4730-01-684-5638, 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 Power Test, Llc. Government technical data includes 1 specification, 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 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 | 4730-01-684-5638 |
| Primary Part Number | 23685 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Power Test, Llc |
| Status | ACTIVE |
| Media for Which Designed | GAS SINGLE RESPONSE |
| 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 |
|---|---|
| 23685 PRIMARY | Power Test, Llc (USA) |
NSN 4730-01-684-5638 is a Reducer,pipe, manufactured by Power Test, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-684-5638 has 1 manufacturer part number on file: 23685 (Power Test, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5820-01-704-0249. Verify interchangeability with system specifications before substitution.
Key specifications for 23685: Media for Which Designed: GAS SINGLE RESPONSE; Part Name Assigned by Controlling Agency: ENGINE PREPARATION DRESS ADAPTER, EXHAUST; End Item Identification: 4910-01-645-2311. 1 specification is 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.