The Piston Head,downl, cataloged under National Stock Number 1620-01-642-2813, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Thomas Instrument, Incorporated. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1620-01-642-2813 |
| Primary Part Number | 201309306-01 |
| Item Name | Piston Head,downl |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Thomas Instrument, Incorporated |
| Status | ACTIVE |
| Overall Diameter | 0.861 INCHES NOMINAL IN |
| Criticality Code Justification | AGAV |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 201309306-01 | Thomas Instrument, Incorporated (USA) |
| 201309306-01 | Nassau Tool Works, Inc (USA) |
| 201309306-01 | Transaero, Inc. (USA) |
| 201309306-01 | Bemsco Inc (USA) |
| 201309306-01 | Hdi Landing Gear Usa Inc (USA) |
| 201309306-01 | Thomas Instrument, Incorporated (USA) |
| 201309306-01 | Saf Industries Llc Dba Saf Industries Llc Div Garkenyon (USA) |
| 201309306-01 | Machine Specialties, Llc (USA) |
| Reference | Meaning |
|---|---|
| 201309306-01 | 3/1 Design control — primary reference U.S. Government activity |
NSN 1620-01-642-2813 is a Piston Head,downl, manufactured by Thomas Instrument, Incorporated, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-642-2813 has 8 manufacturer part numbers on file: 201309306-01 (Thomas Instrument, Incorporated), 201309306-01 (Nassau Tool Works, Inc), 201309306-01 (Transaero, Inc.), 201309306-01 (Bemsco Inc), 201309306-01 (Hdi Landing Gear Usa Inc) and 3 more.
Key specifications for 201309306-01: Overall Diameter: 0.861 INCHES NOMINAL IN; Criticality Code Justification: AGAV; Overall Length: 0.870 INCHES NOMINAL IN; Overall Width: 0.795 INCHES NOMINAL IN. 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 1620-01-642-2813 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.