4820-01-271-3742

Find complete technical information, availability, and procurement data for: 4820-01-271-3742
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-271-3742

Item Name Code

22113

Assigment Date

01/23/1988 (38 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.

2.763 inches minimum and 2.773 inches maximum body outside diameter, 3.240 inches minimum and 3.255 inches maximum flange diameter, 2.570 inches minimum and 2.573 inches maximum under flange height, 0.310 inches minimum and 0.312 inches maximum flange seat to disk end height, 1.896 inches minimum and 1.898 inches maximum body inside 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: 3.240 inches minimum and 3.255 inches maximum
Body Outside Diameter: 2.763 inches minimum and 2.773 inches maximum
Body Inside Diameter: 1.896 inches minimum and 1.898 inches maximum
Flange Seat To Disk End Height: 0.310 inches minimum and 0.312 inches maximum
Under Flange Height: 2.570 inches minimum and 2.573 inches maximum
Seating Surface Shape: flat
Special Features: threaded under flange 3.000-8un-2a,0.697 in. deep nominal
Material: aluminum alloy overall
Style Designator: plain flanged

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
365D065	Valve Seat
365D065 ITEM 1	Valve Seat
365D065-1	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-271-3742?

The FSCG of the NSN 4820-01-271-3742 is 4820

Does the NSN 4820-01-271-3742 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-271-3742 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 4820-01-271-3742 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-271-3742 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 4820-01-271-3742 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Sat, Jan 23, 1988