The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-01-448-3237, 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 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-448-3237 |
| Primary Part Number | KC49831-1 |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Bolt Circle Nominal Diameter | 1.120 INCHES SECOND END IN |
| Nominal Overall Length | 0.676 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.100 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Nominal Outside Diameter | 1.750 INCHES SECOND END IN |
| Bolt Hole Quantity | 8 SECOND END |
| Thread Class | 3A FIRST END A |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| Nominal Thickness | 0.120 INCHES SECOND END IN |
| 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 |
|---|---|
| KC49831-1 PRIMARY | Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division (USA) |
| Reference | Meaning |
|---|---|
| KC49831 | D/9 Drawing number reference only Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division |
NSN 4730-01-448-3237 is a Adapter,straight,flange to Tube, manufactured by Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-448-3237 has 1 manufacturer part number on file: KC49831-1 (Tolo Incorporated Dba Bfgoodrich Aerospace, Tolo Division).
Key specifications for KC49831-1: Flange Shape: ROUND WITH HOLES SECOND END; Flange Face Design: PLAIN SECOND END; Connection Style: FLARED (TUBE) FIRST END; Bolt Circle Nominal Diameter: 1.120 INCHES SECOND END IN. 18 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.