The Hinge Pin,valve, cataloged under National Stock Number 4820-01-491-4730, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Young & Cunningham America, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-491-4730 |
| Primary Part Number | A3.3535-6IN-ITEM4 |
| Item Name | Hinge Pin,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Young & Cunningham America, Inc. |
| Status | ACTIVE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| A3.3535-6IN-ITEM4 PRIMARY | Young & Cunningham America, Inc. (USA) |
| Reference | Meaning |
|---|---|
| A3.3535 | D/9 Drawing number reference only Young & Cunningham America, Inc. |
NSN 4820-01-491-4730 is a Hinge Pin,valve, manufactured by Young & Cunningham America, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-491-4730 has 1 manufacturer part number on file: A3.3535-6IN-ITEM4 (Young & Cunningham America, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-491-4736, 4820-01-491-4739. Verify interchangeability with system specifications before substitution.
Key specifications for A3.3535-6IN-ITEM4: Special Features: NHA VALVE,SCUPPER 6IN. IN; Material: COPPER ALLOY. 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.