The Cylinder Assembly,parabrake, cataloged under National Stock Number 1680-00-347-6641, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Grindley Manufacturing Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-347-6641 |
| Primary Part Number | 20-34241-1 |
| Item Name | Cylinder Assembly,parabrake |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Grindley Manufacturing Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF BUSHING,CYLINDER,U/O NUMBER 20-34248-601 ACTUATOR ASSEMBLY-F4 AIRCRAFT |
| 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 |
|---|---|
| 20-34241-1 | Grindley Manufacturing Inc. (USA) |
| Reference | Meaning |
|---|---|
| 20-34241-1 | 3/9 Design control — primary reference The Boeing Company Div Defense |
NSN 1680-00-347-6641 is a Cylinder Assembly,parabrake, manufactured by Grindley Manufacturing Inc., classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-347-6641 has 1 manufacturer part number on file: 20-34241-1 (Grindley Manufacturing Inc.).
Key specifications for 20-34241-1: General Characteristics Item Description: CONSISTS OF BUSHING,CYLINDER,U/O NUMBER 20-34248-601 ACTUATOR ASSEMBLY-F4 AIRCRAFT. 1 specification is 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 1680-00-347-6641 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.