The Bell Crank, cataloged under National Stock Number 3040-01-319-0843, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Entwistle Company Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-319-0843 |
| Primary Part Number | 8606-833-1 |
| Item Name | Bell Crank |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.380 INCHES NOMINAL FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 2.000 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.310 INCHES NOMINAL SECOND END IN |
| Bore Length | 2.500 INCHES NOMINAL IN |
| Style Designator | FLAT-BOLT CIRCLE AROUND PIVOT HOLE |
| Features Provided | FULCRUM SHAFT |
| Bore Diameter | 0.750 INCHES NOMINAL IN |
| 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 |
|---|---|
| 8606-833-1 PRIMARY | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| 8606-833-1 | 5/9 Secondary reference Wilson Machine Co Inc |
| 8606-833-1 | 5/9 Secondary reference Entwistle Co the Defense Technology Div |
| 8606-833 | D/9 Drawing number reference only Wilson Machine Co Inc |
NSN 3040-01-319-0843 is a Bell Crank, manufactured by The Entwistle Company Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-319-0843 has 1 manufacturer part number on file: 8606-833-1 (The Entwistle Company Llc).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-319-0845, 3040-01-319-0846. Verify interchangeability with system specifications before substitution.
Key specifications for 8606-833-1: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.380 INCHES NOMINAL FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.000 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.310 INCHES NOMINAL SECOND END IN; Bore Length: 2.500 INCHES NOMINAL IN. 8 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.