The Coupling Half,shaft, cataloged under National Stock Number 3010-01-524-4522, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is TB Woods's Corporation. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-01-524-4522 |
| Primary Part Number | 6S X 1 3/8 |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | TB Woods's Corporation |
| Status | ACTIVE |
| Bore Length | 1.6300 INCHES NOMINAL IN |
| Outside Diameter | 4.000 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Bore Diameter | 1.3765 INCHES NOMINAL IN |
| Material | IRON CAST |
| 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 |
|---|---|
| 57506-S LINE NO. 1 | TB Woods's Corporation (USA) |
| 6S X 1 3/8 PRIMARY | TB Woods's Corporation (USA) |
| Reference | Meaning |
|---|---|
| 57506-S | D/9 Drawing number reference only TB Woods's Corporation |
NSN 3010-01-524-4522 is a Coupling Half,shaft, manufactured by TB Woods's Corporation, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-524-4522 has 2 manufacturer part numbers on file: 57506-S LINE NO. 1 (TB Woods's Corporation), 6S X 1 3/8 (TB Woods's Corporation).
1 possible match (shared part number, not a government interchangeability claim): 3010-01-524-5736. Verify interchangeability with system specifications before substitution.
Key specifications for 6S X 1 3/8: Bore Length: 1.6300 INCHES NOMINAL IN; Overall Length: 1.630 INCHES NOMINAL IN; Outside Diameter: 4.000 INCHES NOMINAL IN; Bore Shape: STRAIGHT. 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.