The Piston,valve, cataloged under National Stock Number 4810-01-246-5594, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-246-5594 |
| Primary Part Number | 33661 |
| Item Name | Piston,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| 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 |
|---|---|
| 33661 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 33661 | 5/9 Secondary reference United Technologies Corp Hamilton Sundstrand Corp |
NSN 4810-01-246-5594 is a Piston,valve, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-246-5594 has 1 manufacturer part number on file: 33661 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
2 possible matches (shared part number, not a government interchangeability claim): 6110-01-316-0738, 2540-01-643-2874. Verify interchangeability with system specifications before substitution.
Key specifications for 33661: Special Features: ALUMINUM ALLOY 6061-T4 PER DCC 490 TYPE IV;SURFACE TREATMENT PER MIL-C-5541 CL 1A;1.620 IN. OD FIRST END,1.440 IN. OD SECOND END,0.580 IN. O/A LG A; End Item Identification: USED ON VALVE IN P/N 11222-1 CONVERTER/TRANSDUCER,TEMPERATURE AND PRESSURE CONTROL SYSTEM,F-16 AIRCRAFT. 0 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.
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.