The Piston,gearbox, cataloged under National Stock Number 1680-00-008-3935, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-008-3935 |
| Item Name | Piston,gearbox |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| General Characteristics Item Description | CRES PER AMS 5643 OR QQ-S-763,0.812 IN. MIN,0.822 IN. MAX LG,0.996 IN. MIN,0.998 IN. MAX LARGE OD,0.85 IN. SMALL OD 0.4375 IN.MIN,0.4395 IN. MAX ID,0.185 IN. MIN,0.190 IN. MAX W RING GROOVE,ROCKWELLC SCALE 28-32 HARDNESS RATING IN |
| 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 |
| Reference | Meaning |
|---|---|
| 42252D24 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-00-008-3935 is a Piston,gearbox, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-00-008-3935: General Characteristics Item Description: CRES PER AMS 5643 OR QQ-S-763,0.812 IN. MIN,0.822 IN. MAX LG,0.996 IN. MIN,0.998 IN. MAX LARGE OD,0.85 IN. SMALL OD 0.4375 IN.MIN,0.4395 IN. MAX ID,0.185 IN. MIN,0.190 IN. MAX W RING GROOVE,ROCKWELLC SCALE 28-32 HARDNESS RATING IN. 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 1680-00-008-3935 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.