The Retainer,filter Element, cataloged under National Stock Number 1650-00-229-1681, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Pti Technologies 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-229-1681 |
| Primary Part Number | 52-10637 |
| Item Name | Retainer,filter Element |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,PASSIVATED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 52-10637 PRIMARY | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 52-10637 | 5/9 Secondary reference U.S. Government activity |
| 52-10637 | 5/9 Secondary reference U.S. Government activity |
NSN 1650-00-229-1681 is a Retainer,filter Element, manufactured by Pti Technologies Inc., classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-229-1681 has 1 manufacturer part number on file: 52-10637 (Pti Technologies Inc.).
Key specifications for 52-10637: General Characteristics Item Description: CRES,PASSIVATED. 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.
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.