The Shaft,shouldered, cataloged under National Stock Number 3040-01-438-3415, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-438-3415 |
| Primary Part Number | 2B1-1776 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Material Document and Classification | QQ-S-633, COMP B FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT 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 |
|---|---|
| 2B1-1776 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 2D3-05667 ITEM 66 | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2D3-05667 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 3040-01-438-3415 is a Shaft,shouldered, manufactured by Lake Shore Systems, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-438-3415 has 2 manufacturer part numbers on file: 2B1-1776 (Lake Shore Systems, Inc.), 2D3-05667 ITEM 66 (Lake Shore Systems, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-438-3790. Verify interchangeability with system specifications before substitution.
Key specifications for 2B1-1776: Material Document and Classification: QQ-S-633, COMP B FED SPEC SINGLE MATERIAL RESPONSE; End Similarity: NOT IDENTICAL; End Item Identification: W/S SUPPLY CLASS AOE; Material: STEEL. 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.