The Seat,valve, cataloged under National Stock Number 4820-00-682-5320, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc Dba Eaton Aerospace Jackson. Government technical data includes 18 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-682-5320 |
| Primary Part Number | 17935 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Eaton Aerospace Llc Dba Eaton Aerospace Jackson |
| Status | ACTIVE |
| Material | STEEL OVERALL |
| Hardness Rating | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL |
| Seal Accommodation Type | GROOVED |
| Body Outside Diameter | 0.670 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN |
| Seating Surface Shape | FLAT |
| Surface Treatment | PASSIVATE OVERALL |
| Style Designator | PLAIN FLANGED |
| Flange Diameter | 0.747 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 18 SINGLE THREADED PORTION |
| FSC Application Data | VALVE,BRAKE CONTROL |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Thread Length | 0.187 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Flange Seat to Disk End Height | 0.281 INCHES NOMINAL IN |
| Body Inside Diameter | 0.374 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Under Flange Height | 0.500 INCHES NOMINAL IN |
| Nominal Thread Size | 0.625 INCHES SINGLE THREADED PORTION IN |
| Material Document and Classification | QQ-S-763,CLASS 440C FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Series Designator | UNF SINGLE THREADED PORTION |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 17935 PRIMARY | Eaton Aerospace Llc Dba Eaton Aerospace Jackson (USA) |
NSN 4820-00-682-5320 is a Seat,valve, manufactured by Eaton Aerospace Llc Dba Eaton Aerospace Jackson, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-682-5320 has 1 cross-referenced part number: 17935 (Eaton Aerospace Llc Dba Eaton Aerospace Jackson).
There are 5 known substitutes for 4820-00-682-5320: 3455-00-227-9862, 5331-00-263-8029, 5360-01-018-5197 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 17935: Material: STEEL OVERALL; Hardness Rating: 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL; Seal Accommodation Type: GROOVED; Body Outside Diameter: 0.670 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN. 18 total characteristics are documented in the Federal Logistics Information System.