The Shaft,shouldered, cataloged under National Stock Number 3040-01-503-7851, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is B.w. Elliott Manufacturing Co., Llc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 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 | 3040-01-503-7851 |
| Primary Part Number | 12587 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | B.w. Elliott Manufacturing Co., Llc |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.3680 INCHES NOMINAL IN |
| Largest Step Diameter | 0.620 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN |
| First End Style | INTERNAL THREADED |
| First End Internal Thread Length | 0.5000 INCHES MINIMUM IN |
| End Similarity | IDENTICAL |
| Material | STEEL |
| 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 |
|---|---|
| A-801-12587 | B.w. Elliott Manufacturing Co., Llc (USA) |
| 12111M502A ITEM 3 | B.w. Elliott Manufacturing Co., Llc (USA) |
| 12587 PRIMARY | B.w. Elliott Manufacturing Co., Llc (USA) |
NSN 3040-01-503-7851 is a Shaft,shouldered, manufactured by B.w. Elliott Manufacturing Co., Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-503-7851 has 3 manufacturer part numbers on file: A-801-12587 (B.w. Elliott Manufacturing Co., Llc), 12111M502A ITEM 3 (B.w. Elliott Manufacturing Co., Llc), 12587 (B.w. Elliott Manufacturing Co., Llc).
2 possible matches (shared part number, not a government interchangeability claim): 6110-01-507-3450, 5340-01-542-4671. Verify interchangeability with system specifications before substitution.
Key specifications for 12587: Step Quantity: 3; First End Diameter: 0.3680 INCHES NOMINAL IN; Largest Step Diameter: 0.620 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN; First End Style: INTERNAL THREADED. 7 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.