H4420-390-3762PC2

View detailed technical data, stock status, and sourcing information for: H4420-390-3762PC2
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-390-3763

Item Name Code

22113

Assigment Date

01/01/1963 (63 years ago)

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

125.0 brinell standard minimum and 150.0 brinell standard maximum body hardness rating, 30.000 nominal seat angle in deg, 0.625 inches nominal flange seat to disk end height, 2.563 inches nominal under flange height, 2.750 inches nominal flange diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Flange Diameter: 2.750 inches nominal
Flange Seat To Disk End Height: 0.625 inches nominal
Under Flange Height: 2.563 inches nominal
Seat Angle In Deg: 30.000 nominal
Hardness Rating: 125.0 brinell standard minimum and 150.0 brinell standard maximum body
Seating Surface Shape: angular
Material: nickel alloy body

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
640-54PC76	Valve Seat
H4420-390-3762PC2	Valve Seat
NH30043PC76	Valve Seat
NH30045PC76	Valve Seat
NH30055PC79	Valve Seat
NH30057-79	Valve Seat
NH30057PC79	Valve Seat
NH30067PC79	Valve Seat
NH30069PC79	Valve Seat
NH30079PC79	Valve Seat
NH30081PC79	Valve Seat
W98070-19	Valve Seat
W98070PC19	Valve Seat

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-390-3763?

The FSCG of the NSN 4820-00-390-3763 is 4820

Does the NSN 4820-00-390-3763 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-390-3763 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4820-00-390-3763 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-390-3763 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4820-00-390-3763 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963