The Coupling,shaft,flexible, cataloged under National Stock Number 3010-01-246-2957, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-246-2957 |
| Primary Part Number | ES4-R-SHRB-SHRB-STD |
| Item Name | Coupling,shaft,flexible |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Rexnord Industries, Llc Div Couplings Division |
| Status | ACTIVE |
| Bore Length | 1.6900 INCHES NOMINAL BOTH ENDS IN |
| Design Type | INSERT |
| Outside Diameter | 4.560 INCHES NOMINAL IN |
| Bore Shape | ROUGH STOCK BOTH ENDS |
| Bore Diameter | 1.6300 INCHES MAXIMUM BOTH ENDS IN |
| Insert Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| ES4-R-SHRB-SHRB-STD PRIMARY | Rexnord Industries, Llc Div Couplings Division (USA) |
| Reference | Meaning |
|---|---|
| ES4-R-SHRB-SHRB-STD | 5/9 Secondary reference Rexnord Industries, Inc. Div Elastomer Products |
NSN 3010-01-246-2957 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 3010-01-246-2957 has 1 manufacturer part number on file: ES4-R-SHRB-SHRB-STD (Rexnord Industries, Llc Div Couplings Division).
Key specifications for ES4-R-SHRB-SHRB-STD: Bore Length: 1.6900 INCHES NOMINAL BOTH ENDS IN; Design Type: INSERT; Overall Length: 8.380 INCHES NOMINAL IN; Outside Diameter: 4.560 INCHES NOMINAL IN. 6 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.