The Bell Crank, cataloged under National Stock Number 3040-01-499-1302, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-499-1302 |
| Primary Part Number | 563-6984942-26 |
| Item Name | Bell Crank |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 5.000 INCHES NOMINAL SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 4.000 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 1.000 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.751 INCHES NOMINAL FIRST END IN |
| Bore Length | 4.000 INCHES NOMINAL IN |
| Style Designator | CLEVIS ENDS |
| Material Document and Classification | MIL-B-24480 MIL SPEC ALL MATERIAL RESPONSES |
| Fulcrum Bore Shape | SPLINED |
| Bore Diameter | 2.400 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 563-6984942-26 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 563-6984942 | D/9 Drawing number reference only Naval Sea Systems Command |
| H552-0404-26 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-499-1302 is a Bell Crank, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-499-1302 has 1 manufacturer part number on file: 563-6984942-26 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-499-1340, 3040-01-499-1401, 3040-01-499-1420. Verify interchangeability with system specifications before substitution.
Key specifications for 563-6984942-26: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 5.000 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 4.000 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 1.000 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.751 INCHES NOMINAL FIRST END 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.
NSN 3040-01-499-1302 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.