The Bell Crank, cataloged under National Stock Number 1680-00-336-1745, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-336-1745 |
| Primary Part Number | S1520-61602-000 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Bore Length | 0.820 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND PAINT |
| Bore Diameter | 0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM 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 |
|---|---|
| S1520-61602-000 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| S1520-61602 | Airbus Deutschland Gmbh -Werk Bremen- (DEU) |
| Reference | Meaning |
|---|---|
| S1520-61602 | 5/9 Secondary reference Dulond Tool & Engineering, Inc. Dba Dulond Tool & Engineering |
| S1520-61602 | 5/9 Secondary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 1680-00-336-1745 is a Bell Crank, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-336-1745 has 2 manufacturer part numbers on file: S1520-61602-000 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), S1520-61602 (Airbus Deutschland Gmbh -Werk Bremen-).
Key specifications for S1520-61602-000: Bore Length: 0.820 INCHES NOMINAL IN; Surface Treatment: CADMIUM AND PAINT; Bore Diameter: 0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN; Material: STEEL. 4 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.