The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-061-5212, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Martin Sprocket and Gear Co Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-061-5212 |
| Primary Part Number | 6018X1-3/8X1-7/8 |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Martin Sprocket and Gear Co Inc |
| Status | ACTIVE |
| Keyway Depth | 0.2325 INCHES NOMINAL FIRST END IN |
| Keyway Depth | 0.2505 INCHES NOMINAL SECOND END IN |
| Design Type | ROLLER CHAIN |
| 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 |
|---|---|
| 6018X1-3/8X1-7/8 PRIMARY | Martin Sprocket and Gear Co Inc (USA) |
| Reference | Meaning |
|---|---|
| D60-18 1 7/8X1 3/8 IN.BORES | 5/9 Secondary reference Rexnord Industries, Llc Div Couplings Division |
| E3081PC34 | 5/9 Secondary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| D60-18 | 5/9 Secondary reference Rexnord Holdings Inc |
NSN 3010-01-061-5212 is a Coupling,shaft,flexible, manufactured by Martin Sprocket and Gear Co Inc, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-061-5212 has 1 manufacturer part number on file: 6018X1-3/8X1-7/8 (Martin Sprocket and Gear Co Inc).
Key specifications for 6018X1-3/8X1-7/8: Keyway Depth: 0.2325 INCHES NOMINAL FIRST END IN; Keyway Depth: 0.2505 INCHES NOMINAL SECOND END IN; Design Type: ROLLER CHAIN; Overall Length: 5.260 INCHES NOMINAL IN. 3 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.