The Coupling,shaft,flexible, cataloged under National Stock Number 3010-00-185-9846, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Rexnord Industries, Llc Div Couplings Division. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 3010-00-185-9846 |
| Primary Part Number | 125SN |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Rexnord Industries, Llc Div Couplings Division |
| Status | ACTIVE |
| Keyway Depth | 0.1250 INCHES NOMINAL SECOND END IN |
| Keyway Depth | 0.1562 INCHES NOMINAL FIRST END IN |
| Securing Method | KEY BOTH ENDS |
| Bore Length | 1.6250 INCHES NOMINAL BOTH ENDS IN |
| Design Type | DISK |
| Keying Facility Type | KEYWAY BOTH ENDS |
| Features Provided | KEYWAY AND EXPOSED COUPLING BOLT TYPE |
| Bore Shape | STRAIGHT BOTH ENDS |
| Keying Facility Quantity | 1 BOTH ENDS |
| Keyway Width | 0.250 INCHES NOMINAL SECOND END IN |
| Keyway Width | 0.312 INCHES NOMINAL FIRST END IN |
| Furnished Items and Quantity | TUBULAR SHAFT 1 |
| 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 |
|---|---|
| 125SN PRIMARY | Rexnord Industries, Llc Div Couplings Division (USA) |
| Reference | Meaning |
|---|---|
| 26731 | 5/9 Secondary reference Rexnord Industries, Llc Div Couplings Division |
NSN 3010-00-185-9846 is a Coupling,shaft,flexible, manufactured by Rexnord Industries, Llc Div Couplings Division, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-185-9846 has 1 manufacturer part number on file: 125SN (Rexnord Industries, Llc Div Couplings Division).
5 possible matches (shared part number, not a government interchangeability claim): 5950-00-215-8289, 5331-00-290-0611, 1650-00-604-6606. Verify interchangeability with system specifications before substitution.
Key specifications for 125SN: Keyway Depth: 0.1250 INCHES NOMINAL SECOND END IN; Keyway Depth: 0.1562 INCHES NOMINAL FIRST END IN; Securing Method: KEY BOTH ENDS; Bore Length: 1.6250 INCHES NOMINAL BOTH ENDS IN. 12 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.