The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-348-1851, 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 5 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-348-1851 |
| Primary Part Number | OTI-4729 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | American Vulkan Corporation Dba Vulkan Corp |
| Status | ACTIVE |
| Keying Facility Type | INTEGRAL KEY FIRST END |
| Keying Facility Spacing in Deg | 40.0 FIRST END |
| Features Provided | KEYWAY |
| Bore Shape | STRAIGHT FIRST END |
| Keying Facility Quantity | 1 FIRST END |
| 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 |
|---|---|
| OTI-4729 PRIMARY | American Vulkan Corporation Dba Vulkan Corp (USA) |
| 7939193514 | American Vulkan Corporation Dba Vulkan Corp (USA) |
| RATO 1912-02210/21 | American Vulkan Corporation Dba Vulkan Corp (USA) |
NSN 3010-01-348-1851 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 3010-01-348-1851 has 3 manufacturer part numbers on file: OTI-4729 (American Vulkan Corporation Dba Vulkan Corp), 7939193514 (American Vulkan Corporation Dba Vulkan Corp), RATO 1912-02210/21 (American Vulkan Corporation Dba Vulkan Corp).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-351-6560. Verify interchangeability with system specifications before substitution.
Key specifications for OTI-4729: Keying Facility Type: INTEGRAL KEY FIRST END; Keying Facility Spacing in Deg: 40.0 FIRST END; Features Provided: KEYWAY; Bore Shape: STRAIGHT FIRST END. 5 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.