The Shaft,shouldered, cataloged under National Stock Number 3040-00-901-0995, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-901-0995 |
| Primary Part Number | A4343A |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Step Quantity | 4 |
| First End Diameter | 2.9310 INCHES NOMINAL IN |
| First End Spline Major Diameter | 2.9310 INCHES NOMINAL IN |
| Second End Diameter | 2.5600 INCHES NOMINAL IN |
| Largest Step Diameter | 3.500 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| First End Spline Length | 3.500 INCHES NOMINAL IN |
| First End Spline Quantity | 24 |
| End Similarity | NOT IDENTICAL |
| Second End Style | INTERNAL THREADED |
| First End Spline Minor Diameter | 2.6050 INCHES NOMINAL IN |
| Material | STEEL |
| Second End Internal Thread Length | 1.781 INCHES NOMINAL IN |
| 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 |
|---|---|
| A4343A PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
NSN 3040-00-901-0995 is a Shaft,shouldered, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-901-0995 has 1 manufacturer part number on file: A4343A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).
Key specifications for A4343A: Step Quantity: 4; First End Diameter: 2.9310 INCHES NOMINAL IN; First End Spline Major Diameter: 2.9310 INCHES NOMINAL IN; Second End Diameter: 2.5600 INCHES NOMINAL IN. 13 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.