The Cylinder,vented, cataloged under National Stock Number 1720-01-285-7189, is classified within Federal Supply Class 1720 (Aircraft Launching Equipment) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The manufacturer of record is York Precision Machining and Hydraulics, Llc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1720-01-285-7189 |
| Primary Part Number | 622259-1L |
| Item Name | Cylinder,vented |
| FSC / FSG | 1720 / 17 — Aircraft Launching Equipment |
| Manufacturer | York Precision Machining and Hydraulics, Llc |
| Status | ACTIVE |
| FSC Application Data | LAUNCHING ENGINE ASSEMBLY |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 622259-1L | York Precision Machining and Hydraulics, Llc (USA) |
| 622259-1L | Chalmers & Kubeck, Inc. Dba Monarch Valve Corp (USA) |
| 622259-1L | Precision Custom Components, Llc (USA) |
| 622259-1L | The Entwistle Company Llc (USA) |
| Reference | Meaning |
|---|---|
| 622259-1L | 5/9 Secondary reference Wellman Dynamics Machining and Assembly, Inc. |
| 622259-1L | 3/2 Design control — primary reference U.S. Government activity |
| 622259-1L | 5/2 Secondary reference U.S. Government activity |
NSN 1720-01-285-7189 is a Cylinder,vented, manufactured by York Precision Machining and Hydraulics, Llc, classified under FSC 1720, Aircraft Launching Equipment. Status: active.
NSN 1720-01-285-7189 has 4 manufacturer part numbers on file: 622259-1L (York Precision Machining and Hydraulics, Llc), 622259-1L (Chalmers & Kubeck, Inc. Dba Monarch Valve Corp), 622259-1L (Precision Custom Components, Llc), 622259-1L (The Entwistle Company Llc).
Key specifications for 622259-1L: FSC Application Data: LAUNCHING ENGINE ASSEMBLY; Criticality Code Justification: FEAT; Special Features: ITEM IS A NON-AVIATION CRITICAL SAFETY ITEM (SCI) WHOSE FAILURE WILL RESULT IN SERIOUS DAMAGE TO EQUIPMENT OR SERIOUS INJURY OR DEATH TO PERSONNEL.. 2 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.
NSN 1720-01-285-7189 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.