The Shaft,shouldered, cataloged under National Stock Number 3040-01-204-4515, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Real-Time Laboratories, Llc. Government technical data includes 11 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. 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 | 3040-01-204-4515 |
| Primary Part Number | 20091 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Real-Time Laboratories, Llc |
| Status | ACTIVE |
| Second End External Thread Length | 0.125 INCHES NOMINAL IN |
| Step Quantity | 2 |
| First End Diameter | 0.2500 INCHES NOMINAL IN |
| Second End Diameter | 0.1900 INCHES NOMINAL IN |
| Largest Step Diameter | 0.250 INCHES NOMINAL IN |
| First End Slot Width | 0.062 INCHES NOMINAL IN |
| First End Style | SLOTTED |
| End Similarity | NOT IDENTICAL |
| First End Slot Depth | 0.062 INCHES NOMINAL IN |
| Second End Style | EXTERNAL THREADED |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 20091 PRIMARY | Real-Time Laboratories, Llc (USA) |
NSN 3040-01-204-4515 is a Shaft,shouldered, manufactured by Real-Time Laboratories, Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-204-4515 has 1 manufacturer part number on file: 20091 (Real-Time Laboratories, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5935-01-345-3786, 5895-01-471-3501, 2330-01-632-7531. Verify interchangeability with system specifications before substitution.
Key specifications for 20091: Second End External Thread Length: 0.125 INCHES NOMINAL IN; Step Quantity: 2; First End Diameter: 0.2500 INCHES NOMINAL IN; Second End Diameter: 0.1900 INCHES NOMINAL IN. 11 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.