The Reducer,boss, cataloged under National Stock Number 4730-01-448-2330, 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 Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-448-2330 |
| Primary Part Number | KC49780-1 |
| Item Name | Reducer,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 PREFORMED PACKING |
| Connection Style | FLARED W/ GASKET SEAL (BOSS) ALL ENDS |
| Nominal Overall Length | 1.531 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| 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 |
|---|---|
| KC49780-1 PRIMARY | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division (USA) |
| Reference | Meaning |
|---|---|
| KC49780 | D/9 Drawing number reference only Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division |
NSN 4730-01-448-2330 is a Reducer,boss, manufactured by Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-448-2330 has 1 manufacturer part number on file: KC49780-1 (Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division).
Key specifications for KC49780-1: Furnished Items and Quantity: 2 PREFORMED PACKING; Connection Style: FLARED W/ GASKET SEAL (BOSS) ALL ENDS; Nominal Overall Length: 1.531 INCHES IN; Connection Type: THREADED EXTERNAL BOSS ALL ENDS. 10 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.