The Bell Crank, cataloged under National Stock Number 3040-01-111-5851, 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 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-111-5851 |
| Primary Part Number | 206-4775633 ITEM 4 |
| 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 | 1.380 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.250 INCHES NOMINAL FIRST END IN |
| Bore Length | 0.500 INCHES NOMINAL IN |
| Bore Diameter | 0.438 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 206-4775633 ITEM 4 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87749-3901 | D/9 Drawing number reference only U.S. Government activity |
| 87749-3901 ITEM 4 | 3/2 Design control — primary reference U.S. Government activity |
| 206-4775633 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-111-5851 is a Bell Crank, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-111-5851 has 1 manufacturer part number on file: 206-4775633 ITEM 4 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-118-4431. Verify interchangeability with system specifications before substitution.
Key specifications for 206-4775633 ITEM 4: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.380 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.250 INCHES NOMINAL FIRST END IN; Bore Length: 0.500 INCHES NOMINAL IN; Bore Diameter: 0.438 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN. 5 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 3040-01-111-5851 has DEMIL Code Q. 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.