The Bell Crank, cataloged under National Stock Number 1680-01-528-5606, 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 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1680-01-528-5606 |
| Primary Part Number | 123AB11571-5 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Material Document and Classification | MIL-S-18729 MIL STD 1ST MATERIAL RESPONSE AND MIL-T-6736 MIL STD 2ND MATERIAL RESPONSE |
| Surface Treatment | PHOSPHATE AND PAINT |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 123AB11571-5 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123AB11571-5 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 123AB11571-5 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| 123AB11571 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 1680-01-528-5606 is a Bell Crank, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-528-5606 has 1 manufacturer part number on file: 123AB11571-5 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 1680-01-528-5607. Verify interchangeability with system specifications before substitution.
Key specifications for 123AB11571-5: Material Document and Classification: MIL-S-18729 MIL STD 1ST MATERIAL RESPONSE AND MIL-T-6736 MIL STD 2ND MATERIAL RESPONSE; Surface Treatment: PHOSPHATE AND PAINT; Part Name Assigned by Controlling Agency: INAVY:BELLCRANK ASSEMBLY; End Item Identification: C-2A AND E-2C;BELLCRANK ASSEMBLY AIRBORNE EQUIP-CREW SEAT-BASE A. 3 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.