The Tee,tube, cataloged under National Stock Number 4730-00-263-6509, 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 Flagg Stanley G & Co Inc Dba Flagg Brass. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-263-6509 |
| Primary Part Number | 3430-251 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Flagg Stanley G & Co Inc Dba Flagg Brass |
| Status | ACTIVE |
| Connection Style | CRIMPED (TUBE) SECOND END |
| Connection Style | CRIMPED (TUBE) THIRD END |
| Connection Style | CRIMPED (TUBE) FIRST END |
| Tubing Wall Nominal Thickness for Which Designed | 0.055 INCHES FIRST END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.055 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.060 INCHES THIRD END IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Connection Type | UNTHREADED INTERNAL TUBE THIRD END |
| Nominal Outside Diameter Tube Accommodated | 1.375 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 1.625 INCHES THIRD END IN |
| Nominal Outside Diameter Tube Accommodated | 1.375 INCHES FIRST END IN |
| Leg Length | 1.313 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.313 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.157 INCHES NOMINAL THIRD END IN |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 3430-251 PRIMARY | Flagg Stanley G & Co Inc Dba Flagg Brass (USA) |
| Reference | Meaning |
|---|---|
| B16-22 | 3/1 Design control — primary reference U.S. Government activity |
| 411R1 1-4X1 1-4X1 1-2 | 3/2 Design control — primary reference U.S. Government activity |
| 611-1 1-4X1 1-4X1 1-2 | 5/9 Secondary reference Nibco Inc |
NSN 4730-00-263-6509 is a Tee,tube, manufactured by Flagg Stanley G & Co Inc Dba Flagg Brass, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-263-6509 has 1 manufacturer part number on file: 3430-251 (Flagg Stanley G & Co Inc Dba Flagg Brass).
Key specifications for 3430-251: Connection Style: CRIMPED (TUBE) SECOND END; Connection Style: CRIMPED (TUBE) THIRD END; Connection Style: CRIMPED (TUBE) FIRST END; Tubing Wall Nominal Thickness for Which Designed: 0.055 INCHES FIRST END IN. 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.