The Piston,mod,system No.1, cataloged under National Stock Number 1680-01-059-8125, 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1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-059-8125 |
| Item Name | Piston,mod,system No.1 |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| General Characteristics Item Description | CRES 17-4 PH TYPE AMS5643,0.990 IN. DIA,O.660 IN. DIA FIRST END,0.395 IN. DIA SECOND END 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 |
|---|---|
| 3833180-1 | 5/9 Secondary reference Moeller Mfg. Company, Llc Div Aircraft |
| 3833180-1 | 5/9 Secondary reference U.S. Government activity |
| 3833180-1 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations |
| 3833180-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-01-059-8125 is a Piston,mod,system No.1, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-01-059-8125: General Characteristics Item Description: CRES 17-4 PH TYPE AMS5643,0.990 IN. DIA,O.660 IN. DIA FIRST END,0.395 IN. DIA SECOND END IN; End Item Identification: ACFT F16. 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 1680-01-059-8125 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.