The Bell Crank, cataloged under National Stock Number 1680-00-028-8441, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-028-8441 |
| Primary Part Number | 272-7065005 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| 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 | 3.000 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.750 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.750 INCHES NOMINAL FIRST END IN |
| Bore Length | 1.687 INCHES NOMINAL IN |
| Style Designator | RAISED FACE PIVOT AND END HOLES |
| Features Provided | BEARING |
| Surface Treatment | DICHROMATE |
| Bore Diameter | 1.250 INCHES NOMINAL IN |
| Material | MAGNESIUM 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 |
|---|---|
| 272-7065005 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
NSN 1680-00-028-8441 is a Bell Crank, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-028-8441 has 1 manufacturer part number on file: 272-7065005 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 272-7065005: 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: 3.000 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.750 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.750 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 1680-00-028-8441 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.