281439-0001 ITEM18

View detailed technical data, stock status, and sourcing information for: 281439-0001 ITEM18
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Federal Supply Group

Valves

Federal Supply Classification

4810 Powered Valves

National Stock Number

4810-01-056-9527

Item Name Code

22113

Assigment Date

03/03/1978 (48 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.

0.875 inches single threaded portion nominal thread size, 3.366 inches nominal overall height, 2b single threaded portion thread class, 14 single threaded portion thread quantity per inch, 1.645 inches nominal body outside 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: 2b single threaded portion
Overall Height: 3.366 inches nominal
Body Outside Diameter: 1.645 inches nominal
Thread Quantity Per Inch: 14 single threaded portion
Nominal Thread Size: 0.875 inches single threaded portion
Material: nickel alloy overall
Material Document And Classification: qq-n-281 fed spec single material response overall
Thread Series Designator: unf 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
170613-0061	Valve Seat
281439-0001 ITEM18	Valve Seat

FAQs

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

What is the FSCG of the NSN 4810-01-056-9527?

The FSCG of the NSN 4810-01-056-9527 is 4810

Does the NSN 4810-01-056-9527 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4810-01-056-9527 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 4810-01-056-9527 contain precious materials?

Precious metal content is unknown

Does NSN 4810-01-056-9527 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 4810-01-056-9527 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Fri, Mar 3, 1978