The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-328-5657, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is American Vulkan Corporation Dba Vulkan Corp. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3010-01-328-5657 |
| Primary Part Number | EZR1723-1100 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | American Vulkan Corporation Dba Vulkan Corp |
| Status | ACTIVE |
| Keyway Depth | 7.4960 INCHES NOMINAL BOTH ENDS IN |
| Bore Length | 8.7400 INCHES NOMINAL BOTH ENDS IN |
| Design Type | INSERT |
| Keying Facility Type | KEYWAY BOTH ENDS |
| Outside Diameter | 22.990 INCHES MINIMUM AND 27.874 INCHES MAXIMUM IN |
| Features Provided | KEYWAY AND EXPOSED COUPLING BOLT TYPE |
| Bore Shape | STRAIGHT BOTH ENDS |
| Keying Facility Quantity | 1 BOTH ENDS |
| Keyway Width | 1.772 INCHES NOMINAL BOTH ENDS IN |
| Bore Diameter | 7.0000 INCHES NOMINAL BOTH ENDS IN |
| Insert Material | RUBBER |
| 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 |
|---|---|
| EZR1723-1100 PRIMARY | American Vulkan Corporation Dba Vulkan Corp (USA) |
| EZR-1723 PRIMARY | American Vulkan Corporation Dba Vulkan Corp (USA) |
| 2R17230000 | American Vulkan Corporation Dba Vulkan Corp (USA) |
| Reference | Meaning |
|---|---|
| 6639172261 | 5/9 Secondary reference American Vulkan Corporation Dba Vulkan Corp |
NSN 3010-01-328-5657 is a Coupling,shaft,flexible, manufactured by American Vulkan Corporation Dba Vulkan Corp, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-328-5657 has 3 manufacturer part numbers on file: EZR1723-1100 (American Vulkan Corporation Dba Vulkan Corp), EZR-1723 (American Vulkan Corporation Dba Vulkan Corp), 2R17230000 (American Vulkan Corporation Dba Vulkan Corp).
Key specifications for EZR1723-1100: Keyway Depth: 7.4960 INCHES NOMINAL BOTH ENDS IN; Bore Length: 8.7400 INCHES NOMINAL BOTH ENDS IN; Design Type: INSERT; Keying Facility Type: KEYWAY BOTH ENDS. 11 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.