The Collar,shaft, cataloged under National Stock Number 3040-01-435-8814, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-435-8814 |
| Primary Part Number | 2B1-2139 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Securing Hole Type and Location | UNTHREADED ALL HOLES |
| Style Designator | PLAIN ROUND |
| Hole Diameter and Location | 0.2500 INCHES NOMINAL ALL HOLES IN |
| Angle Between Centerlines of Securing Holes in Deg | 180.0 |
| Securing Hole Quantity | 2 |
| 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 |
|---|---|
| 2B1-2139 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 2D3-05842 ITEM NO.192 | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2D3-05842 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 3040-01-435-8814 is a Collar,shaft, manufactured by Lake Shore Systems, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-435-8814 has 2 manufacturer part numbers on file: 2B1-2139 (Lake Shore Systems, Inc.), 2D3-05842 ITEM NO.192 (Lake Shore Systems, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 3020-01-435-8818, 3020-01-435-9074, 3020-01-435-9076. Verify interchangeability with system specifications before substitution.
Key specifications for 2B1-2139: Securing Hole Type and Location: UNTHREADED ALL HOLES; Style Designator: PLAIN ROUND; Hole Diameter and Location: 0.2500 INCHES NOMINAL ALL HOLES IN; Angle Between Centerlines of Securing Holes in Deg: 180.0. 6 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.