The Shaft,shouldered, cataloged under National Stock Number 3040-00-591-9038, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Tyco Fire Products Lp. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-00-591-9038 |
| Primary Part Number | S2656 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Second End External Thread Length | 0.375 INCHES NOMINAL IN |
| Step Quantity | 8 |
| First End Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Diameter | 0.3100 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Largest Step Diameter | 0.750 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | TY 303-18-8 ASSN STD SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| 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 |
|---|---|
| S2656 PRIMARY | Tyco Fire Products Lp (USA) |
| Reference | Meaning |
|---|---|
| 811E5336 | 5/9 Secondary reference Kersey / American Lafrance a Div of Figgie International Inc |
NSN 3040-00-591-9038 is a Shaft,shouldered, manufactured by Tyco Fire Products Lp, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-591-9038 has 1 manufacturer part number on file: S2656 (Tyco Fire Products Lp).
Key specifications for S2656: Second End External Thread Length: 0.375 INCHES NOMINAL IN; Step Quantity: 8; First End Diameter: 0.7500 INCHES NOMINAL IN; Second End Diameter: 0.3100 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN. 10 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.