The Seat,valve, cataloged under National Stock Number 4820-00-714-4839, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-714-4839 |
| Primary Part Number | 83933 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Hydro-Aire Aerospace Corp |
| Status | ACTIVE |
| Surface Treatment | PASSIVATE OVERALL |
| Under Flange Height | 0.297 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Seating Surface Shape | FLAT |
| Material | STEEL COMP 440C OVERALL |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM FACE |
| Body Inside Diameter | 0.498 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM BODY |
| Seal Accommodation Type | GROOVED |
| Flange Diameter | 0.860 INCHES MINIMUM AND 0.861 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.749 INCHES MINIMUM AND 0.751 INCHES MAXIMUM IN |
| Flange Seat to Disk End Height | 0.093 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 83933 PRIMARY | Hydro-Aire Aerospace Corp (USA) |
NSN 4820-00-714-4839 is a Seat,valve, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-714-4839 has 1 cross-referenced part number: 83933 (Hydro-Aire Aerospace Corp).
There are 3 known substitutes for 4820-00-714-4839: 5220-00-267-3398, 5330-00-516-0346, 4820-01-281-7438. Verify interchangeability with system specifications before substitution.
Key specifications for 83933: Surface Treatment: PASSIVATE OVERALL; Under Flange Height: 0.297 INCHES NOMINAL IN; Style Designator: PLAIN FLANGED; Seating Surface Shape: FLAT. 12 total characteristics are documented in the Federal Logistics Information System.