The Elbow,tube, cataloged under National Stock Number 4730-00-445-0594, 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 Mueller Brass Co.. Government technical data includes 15 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-445-0594 |
| Primary Part Number | W2621 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Mueller Brass Co. |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | PLAIN (TUBE) ALL ENDSPLAIN (TUBE) ALL ENDS |
| Tubing Wall Nominal Thickness for Which Designed | 0.090 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.090 INCHES SECOND END0.090 INCHES FIRST END IN |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS |
| Material Document and Classification | ANSI B16.22 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.488 INCHES ALL ENDS IN |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 0.938 INCHES NOMINAL ALL ENDS0.938 INCHES NOMINAL ALL ENDS IN |
| Specification/standard Data | 80204-B16.22 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Maximum Operating Temp | -50.0 FAHRENHEIT SECOND RESPONSE-50.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Maximum Operating Temp | 250.0 FAHRENHEIT FIRST RESPONSE250.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Nondefinitive Spec/std Data | 1 FIGURE |
| Media for Which Designed | WATER SINGLE RESPONSE |
| Material | COPPER ALLOY OR COPPER 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 |
|---|---|
| W2621 | Mueller Brass Co. (USA) |
| Reference | Meaning |
|---|---|
| 13216E9963-2 | 3/2 Design control — primary reference U.S. Government activity |
| 52004-2 | 5/9 Secondary reference U.S. Government activity |
| 13211E4123-2 | 5/9 Secondary reference U.S. Government activity |
| 13216E9963 | D/9 Drawing number reference only U.S. Government activity |
| B16.22 | 5/9 Secondary reference U.S. Government activity |
| R63870C16E9963-2 | 5/9 Secondary reference Unifab Industries Inc |
| 13216E9963 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-445-0594 is a Elbow,tube, manufactured by Mueller Brass Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-445-0594 has 1 manufacturer part number on file: W2621 (Mueller Brass Co.).
4 possible matches (shared part number, not a government interchangeability claim): 4730-00-541-7182, 4730-00-849-3222, 4220-01-443-4740. Verify interchangeability with system specifications before substitution.
Key specifications for W2621: Flow Angle: 90.0 DEGREES; Connection Style: PLAIN (TUBE) ALL ENDSPLAIN (TUBE) ALL ENDS; Tubing Wall Nominal Thickness for Which Designed: 0.090 INCHES SECOND END IN; Tubing Wall Nominal Thickness for Which Designed: 0.090 INCHES SECOND END0.090 INCHES FIRST END IN. 15 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.