The Element Assy,valve, cataloged under National Stock Number 1680-00-435-5398, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1680-00-435-5398 |
| Primary Part Number | 21-11129 |
| Item Name | Element Assy,valve |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 21-11129 PRIMARY | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 21-11129 | 5/9 Secondary reference U.S. Government activity |
| 21-11129 | 5/9 Secondary reference U.S. Government activity |
NSN 1680-00-435-5398 is a Element Assy,valve, manufactured by Pti Technologies Inc., classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-435-5398 has 1 manufacturer part number on file: 21-11129 (Pti Technologies Inc.).
Key specifications for 21-11129: Overall Length: 3.470 INCHES MINIMUM AND 3.530 INCHES MAXIMUM IN; Special Features: ASSEMBLIED FROM 3455-00-222-3790,PN/51-10512,10542 AND 41-10650; End Item Identification: C-5 ACFT,ELEMENT ASSY VALVE; Material: STEEL CORROSION RESISTING. 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.