The Adapter,straight,flange to Tube, cataloged under National Stock Number 4730-00-331-6684, 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 Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-331-6684 |
| Primary Part Number | 6736909 |
| Item Name | Adapter,straight,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flange Face Design | PLAIN WITH GASKET GROOVE SECOND END |
| Surface Treatment Document and Classification | AMS 2470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | FLARED (TUBE) FIRST END |
| Nominal Overall Length | 1.000 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | AMS 4120 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.285 INCHES SECOND END IN |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Bolt Hole Quantity | 4 SECOND END |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A FIRST END A |
| Material | ALUMINUM OVERALL |
| Thread Series Designator | UNF FIRST END |
| 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 |
|---|---|
| 6736909 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6736909 | 5/9 Secondary reference General Motors Corp |
NSN 4730-00-331-6684 is a Adapter,straight,flange to Tube, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-331-6684 has 1 manufacturer part number on file: 6736909 (Allison Transmission Inc Dba Allison Transmission, Inc).
Key specifications for 6736909: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Face Design: PLAIN WITH GASKET GROOVE SECOND END; Surface Treatment Document and Classification: AMS 2470 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: FLARED (TUBE) FIRST END. 16 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.