The Coupling,shaft,rigid, cataloged under National Stock Number 3010-01-386-1975, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3010-01-386-1975 |
| Primary Part Number | 50290-1268 |
| Item Name | Coupling,shaft,rigid |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Material Document and Classification | 66 FED STD 1ST MATERIAL RESPONSE OR AISI/SAE 4340 ASSN STD 2ND MATERIAL RESPONSE |
| Bore Shape | STRAIGHT FIRST END |
| Body Material | STEEL COMP 4340 |
| 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 |
|---|---|
| 50290-1268 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| 01070-0281 ITEM 10-11 | 7/2 Vendor item drawing reference Timken Gears & Services Inc. Div Philadelphia Gear |
| 01070-0281 | D/9 Drawing number reference only Timken Gears & Services Inc. Div Philadelphia Gear |
NSN 3010-01-386-1975 is a Coupling,shaft,rigid, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-386-1975 has 1 manufacturer part number on file: 50290-1268 (Timken Gears & Services Inc. Div Philadelphia Gear).
3 possible matches (shared part number, not a government interchangeability claim): 3010-01-386-3367, 4710-01-390-3626, 6680-01-407-8334. Verify interchangeability with system specifications before substitution.
Key specifications for 50290-1268: Material Document and Classification: 66 FED STD 1ST MATERIAL RESPONSE OR AISI/SAE 4340 ASSN STD 2ND MATERIAL RESPONSE; Bore Shape: STRAIGHT FIRST END; Body Material: STEEL COMP 4340; End Item Identification: PHILADELPHIA GEAR TURNING GEAR ASSEMBLY 01070-0281. 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.