The Reducer,tube, cataloged under National Stock Number 4730-01-372-6532, 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 Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-372-6532 |
| Primary Part Number | 412-4637512 PC602 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 1.250 INCHES IN |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 0.437 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.625 INCHES FIRST END IN |
| Nominal Thread Size | 0.625 INCHES SECOND END IN |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Thread Class | 2B ALL ENDS |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | UNEF SECOND END |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 412-4637512 PC602 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 412-4637512 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4730-01-372-6532 is a Reducer,tube, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-372-6532 has 1 manufacturer part number on file: 412-4637512 PC602 (Huntington Ingalls Inc Div Newport News Shipbuilding).
2 possible matches (shared part number, not a government interchangeability claim): 5365-01-375-0058, 4730-01-399-7522. Verify interchangeability with system specifications before substitution.
Key specifications for 412-4637512 PC602: Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 1.250 INCHES IN; Connection Type: THREADED INTERNAL TUBE ALL ENDS; Nominal Outside Diameter Tube Accommodated: 0.437 INCHES SECOND END IN. 13 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.