The Reducer,pipe, cataloged under National Stock Number 4730-00-778-1977, 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9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-778-1977 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) FIRST END |
| Nominal Overall Length | 1.969 INCHES IN |
| Material Document and Classification | QQ-A-354,COND T FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.125 INCHES SECOND END IN |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Surface Treatment | ANODIZE OVERALL |
| Thread Series Designator | ANPT FIRST END |
| Thread Series Designator | ANPT 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 |
| Reference | Meaning |
|---|---|
| 813369-1 | 3/2 Design control — primary reference U.S. Government activity |
| 8148650 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-00-778-1977 is a Reducer,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-778-1977: Connection Style: PLAIN (PIPE) FIRST END; Nominal Overall Length: 1.969 INCHES IN; Material Document and Classification: QQ-A-354,COND T FED SPEC 2ND MATERIAL RESPONSE OVERALL; Nominal Thread Size: 0.125 INCHES SECOND END IN. 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.