The Reducer,pipe, cataloged under National Stock Number 4730-01-007-5976, 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 Nibco Inc Chemtrol Div. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-007-5976 |
| Primary Part Number | 839-168 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Nibco Inc Chemtrol Div |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.250 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 1.000 INCHES FIRST END IN |
| Connection Style | SOCKET (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Overall Length | 1.250 INCHES IN |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED EXTERNAL PIPE SECOND END |
| Material Document and Classification | STM D1784-68 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE 80 FIRST END |
| Material | PLASTIC 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 |
| Part Number | Manufacturer |
|---|---|
| 839-168 PRIMARY | Nibco Inc Chemtrol Div (USA) |
| 01050040 | Nibco Inc Chemtrol Div (USA) |
| 839-168 | Cleveland Service Center (USA) |
| Reference | Meaning |
|---|---|
| 839-168 | 5/9 Secondary reference Nibco Inc |
| 839-168 | 3/9 Design control — primary reference Nibco Inc |
| 839-168 | 5/9 Secondary reference George Fischer Sloane, Inc. |
| 837-168 | 5/9 Secondary reference George Fischer Sloane, Inc. |
| 01050040 | 5/9 Secondary reference Nibco Inc |
| 839-168 | 5/9 Secondary reference Spears Manufacturing Co. |
| 0141190-168 | 5/9 Secondary reference Eslon Thermoplastics Inc |
| 839-168 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-007-5976 is a Reducer,pipe, manufactured by Nibco Inc Chemtrol Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-007-5976 has 3 manufacturer part numbers on file: 839-168 (Nibco Inc Chemtrol Div), 01050040 (Nibco Inc Chemtrol Div), 839-168 (Cleveland Service Center).
Key specifications for 839-168: Nominal Pipe Size Accommodated: 1.250 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 1.000 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 11 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.