9666 PIECE 4

View detailed technical data, stock status, and sourcing information for: 9666 PIECE 4
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-131-4893

Item Name Code

22113

Assigment Date

05/12/1982 (44 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.

45.000 nominal seat angle in deg, 2a single threaded portion thread class, 2.750 inches nominal overall height, 2.375 inches nominal single threaded portion thread length, 2.484 inches nominal 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.

Thread Class: 2a single threaded portion
Thread Length: 2.375 inches nominal single threaded portion
Overall Height: 2.750 inches nominal
Body Inside Diameter: 2.484 inches nominal
Seat Angle In Deg: 45.000 nominal
Thread Quantity Per Inch: 14 single threaded portion
Nominal Thread Size: 3.250 inches single threaded portion
Seating Surface Shape: angular
Special Features: w/two internal lugs at seat top
Material: nickel alloy or steel corrosion resisting overall
Style Designator: plain threaded
Thread Series Designator: uns single threaded portion

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
9666 PIECE 4	Valve Seat
B7459.002.128	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-131-4893?

The FSCG of the NSN 4820-01-131-4893 is 4820

Does the NSN 4820-01-131-4893 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-131-4893 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 4820-01-131-4893 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-131-4893 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 4820-01-131-4893 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Wed, May 12, 1982