The Seat,valve, cataloged under National Stock Number 4810-01-049-2384, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc. Government technical data includes 13 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 | 4810-01-049-2384 |
| Primary Part Number | 21900 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — No Item Name Available |
| Manufacturer | Eaton Aerospace Llc |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.069 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Body Inside Diameter | 0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| Hardness Rating | 31.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Seating Surface Shape | FLAT |
| Surface Treatment Document and Classification | MIL-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | PLAIN FLANGED |
| Material | STEEL COMP 410 OVERALL |
| FSC Application Data | VALVE,RESET,POWERED |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Flange Diameter | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| Under Flange Height | 0.085 INCHES NOMINAL IN |
| Body Outside Diameter | 0.260 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 21900 PRIMARY | Eaton Aerospace Llc (USA) |
NSN 4810-01-049-2384 is a Seat,valve, manufactured by Eaton Aerospace Llc, classified under FSC 4810 (No Item Name Available). Status: active.
NSN 4810-01-049-2384 has 1 cross-referenced part number: 21900 (Eaton Aerospace Llc).
There are 5 known substitutes for 4810-01-049-2384: 3120-00-662-7145, 5935-00-940-7322, 4910-01-395-4246 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21900: Flange Seat to Disk End Height: 0.069 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Body Inside Diameter: 0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN; Hardness Rating: 31.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL; Seating Surface Shape: FLAT. 13 total characteristics are documented in the Federal Logistics Information System.