The Adapter,straight,flange to Boss, cataloged under National Stock Number 4730-00-024-4307, 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 Northrop Grumman Systems Corporation. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-024-4307 |
| Primary Part Number | GB15C2 |
| Item Name | Adapter,straight,flange to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Connection Style | GASKET SEAL (BOSS) SECOND END |
| Bolt Hole Nominal Diameter | 0.125 INCHES FIRST END IN |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.437 INCHES FIRST END IN |
| Bolt Hole Quantity | 4 FIRST END |
| Surface Treatment | ANODIZE INSIDE |
| Surface Treatment | ANODIZE OUTSIDE |
| Thread Class | 2B SECOND END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNF SECOND END |
| Nominal Thickness | 0.125 INCHES FIRST 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 |
|---|---|
| GB15C2 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 4730-00-024-4307 is a Adapter,straight,flange to Boss, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-024-4307 has 1 manufacturer part number on file: GB15C2 (Northrop Grumman Systems Corporation).
Key specifications for GB15C2: Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Connection Style: GASKET SEAL (BOSS) SECOND END; Bolt Hole Nominal Diameter: 0.125 INCHES FIRST 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.