The Tee,flange, cataloged under National Stock Number 4730-01-259-1386, 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 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-259-1386 |
| Primary Part Number | 70307-63302-041 |
| Item Name | Tee,flange |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Nominal Length | 1.750 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Material Document and Classification | QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.444 INCHES ALL ENDS IN |
| Leg Length | 2.250 INCHES NOMINAL THIRD END IN |
| Leg Length | 2.310 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.310 INCHES NOMINAL FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.312 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Surface Treatment | ANODIZE OVERALL |
| Nominal Width | 1.750 INCHES ALL ENDS IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.312 INCHES ALL ENDS IN |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Nominal Thickness | 0.222 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 70307-63302-041 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 70307-63302 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 4730-01-259-1386 is a Tee,flange, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-259-1386 has 1 manufacturer part number on file: 70307-63302-041 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 70307-63302-041: Flange Shape: RECTANGULAR WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Nominal Length: 1.750 INCHES ALL ENDS IN. 17 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.
NSN 4730-01-259-1386 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.