The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-00-962-3373, 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 Caterpillar Inc Div Caterpillar Defense. Government technical data includes 29 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 | 4730-00-962-3373 |
| Primary Part Number | 3R2603 |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND ENDUNABLE TO DECODE |
| Flange Face Design | UNABLE TO DECODE |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | SWIVEL NUT, GASKET SEAL (TUBE) FIRST ENDUNABLE TO DECODE |
| Nominal Length | 2.740 INCHES SECOND ENDUNABLE TO DECODE IN |
| Nominal Overall Length | 0.983 INCHES IN |
| Connection Type | FLANGE SECOND ENDUNABLE TO DECODE |
| Connection Type | THREADED INTERNAL TUBE FIRST ENDUNABLE TO DECODE |
| Bolt Hole Nominal Diameter | 0.410 INCHES SECOND END IN |
| Bolt Hole Nominal Diameter | UNABLE TO DECODE |
| Nominal Outside Diameter Tube Accommodated | 0.625 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | UNABLE TO DECODE |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Nominal Thread Size | UNABLE TO DECODE |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 0.880 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | UNABLE TO DECODE |
| Bolt Hole Quantity | 4 SECOND ENDUNABLE TO DECODE |
| Nominal Width | 1.754 INCHES SECOND ENDUNABLE TO DECODE IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.907 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | UNABLE TO DECODE |
| Thread Class | 2B FIRST ENDUNABLE TO DECODE |
| Thread Quantity Per Inch | 16 FIRST END |
| Thread Quantity Per Inch | UNABLE TO DECODE |
| Material | STEEL OVERALL |
| Material | UNABLE TO DECODE |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | UNABLE TO DECODE |
| Nominal Thickness | 0.983 INCHES SECOND END IN |
| Nominal Thickness | UNABLE TO DECODE |
| 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 |
|---|---|
| 3R2603 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 4730-00-962-3373 is a Adapter,straight,flange to Tube, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-962-3373 has 1 manufacturer part number on file: 3R2603 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 3R2603: Flange Shape: RECTANGULAR WITH HOLES SECOND ENDUNABLE TO DECODE; Flange Face Design: UNABLE TO DECODE; Flange Face Design: PLAIN SECOND END; Connection Style: SWIVEL NUT, GASKET SEAL (TUBE) FIRST ENDUNABLE TO DECODE. 29 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.