The Seat Nut,valve, cataloged under National Stock Number 4820-01-066-9531, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-066-9531 |
| Primary Part Number | V3274PC2 |
| Item Name | Seat Nut,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL BRONZE ALLOY PER QQ-C390 COMP A |
| 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 |
|---|---|
| V3274PC2 PRIMARY | Portland Valve Llc (USA) |
| V3415 PRIMARY | Tyco Fire Products Lp (USA) |
| V3274 PIECE 2 | Tyco Fire Products Lp (USA) |
| V3415 PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| V-6134 PIECE 2 | C/1 Advisory reference — outside the item-of-supply concept Rockwood Systems Corp |
| V3274 | D/9 Drawing number reference only Tyco Fire Products Lp |
| V-3274PIECE2 | C/1 Advisory reference — outside the item-of-supply concept Rockwood Systems Corp |
NSN 4820-01-066-9531 is a Seat Nut,valve, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-066-9531 has 4 manufacturer part numbers on file: V3274PC2 (Portland Valve Llc), V3415 (Tyco Fire Products Lp), V3274 PIECE 2 (Tyco Fire Products Lp), V3415 (Portland Valve Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-069-4950. Verify interchangeability with system specifications before substitution.
Key specifications for V3274PC2: General Characteristics Item Description: MATERIAL BRONZE ALLOY PER QQ-C390 COMP A. 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.