The Bell Crank, cataloged under National Stock Number 1680-01-528-9279, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-528-9279 |
| Primary Part Number | 123AMM42116-1 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.877 INCHES NOMINAL ALL ENDS IN |
| End Hole/ball Diameter | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM ALL ENDS IN |
| Bore Length | 1.972 INCHES MINIMUM AND 1.977 INCHES MAXIMUM IN |
| Style Designator | RAISED FACE PIVOT W/POSITIONING HOLE, CLEVIS-TWIST, RAISED HOLE |
| Material Document and Classification | QQ-A-250/12 ASSN STD SINGLE MATERIAL RESPONSE |
| Fulcrum Bore Shape | PLAIN |
| Bore Diameter | 0.900 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 123AMM42116-1 | Design/ol, Inc. (USA) |
| 123AMM42116-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123AMM42116-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 123AMM42116 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| 123AMM42116-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 1680-01-528-9279 is a Bell Crank, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-528-9279 has 2 manufacturer part numbers on file: 123AMM42116-1 (Design/ol, Inc.), 123AMM42116-1 (Northrop Grumman Systems Corporation).
Key specifications for 123AMM42116-1: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.877 INCHES NOMINAL ALL ENDS IN; End Hole/ball Diameter: 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM ALL ENDS IN; Bore Length: 1.972 INCHES MINIMUM AND 1.977 INCHES MAXIMUM IN; Style Designator: RAISED FACE PIVOT W/POSITIONING HOLE, CLEVIS-TWIST, RAISED HOLE. 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.