The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-138-6175, 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 Derbyshire Machine & Tool Co. Government technical data includes 28 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-138-6175 |
| Primary Part Number | 2621-166-03ASSY189 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Furnished Items and Quantity | 2 PREFORMED PACKING AND 4 FLAT WASHER |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Connection Style | SOCKET (TUBE) FIRST END |
| Nominal Length | 2.750 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.179 INCHES FIRST END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.179 INCHES FIRST ENDUNABLE TO DECODE IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-A-225/8,T6 AND Z FED SPEC SINGLE MATERIAL RESPONSE SLEEVE |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE BODYUNABLE TO DECODE |
| Bolt Hole Nominal Diameter | 0.469 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES FIRST END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.170 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.375 INCHES NOMINAL FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.875 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Nominal Width | 2.750 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.875 INCHES SECOND END IN |
| Material | STEEL COMP 304 BODY |
| Material | ALUMINUM ALLOY SLEEVE |
| Material | STEEL COMP 304 BODYUNABLE TO DECODE |
| Raised Face Nominal Diameter | 1.436 INCHES SECOND END IN |
| Raised Face Nominal Height | 0.126 INCHES SECOND END IN |
| Nominal Thickness | 2.340 INCHES SECOND 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 |
|---|---|
| 2621-166-03ASSY189 PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 2621-166-03ASSY189 | 5/2 Secondary reference U.S. Government activity |
| 2621-166-03 | D/9 Drawing number reference only U.S. Government activity |
| 2621-166-03ASSY189 | 3/9 Design control — primary reference Drw Mfg Co |
| 2621-166-03ASSY189 | 5/9 Secondary reference Mindeco Corp |
NSN 4730-01-138-6175 is a Elbow,flange to Tube, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-138-6175 has 1 manufacturer part number on file: 2621-166-03ASSY189 (Derbyshire Machine & Tool Co).
Key specifications for 2621-166-03ASSY189: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Furnished Items and Quantity: 2 PREFORMED PACKING AND 4 FLAT WASHER; Flow Angle: 90.0 DEGREES; Flange Face Design: RAISED STRAIGHT SECOND END. 28 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.