26M77-100 ITEM 17

View detailed technical data, stock status, and sourcing information for: 26M77-100 ITEM 17
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-217-0016

Item Name Code

22113

Assigment Date

09/20/1985 (40 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.

3.880 inches nominal flange diameter, 0.690 inches nominal flange seat to disk end height, 2.625 inches nominal body inside diameter, 3a single threaded portion thread class, 0.710 inches nominal single threaded portion thread length

Product Characteristics

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

Thread Class: 3a single threaded portion
Thread Length: 0.710 inches nominal single threaded portion
Flange Diameter: 3.880 inches nominal
Body Inside Diameter: 2.625 inches nominal
Flange Seat To Disk End Height: 0.690 inches nominal
Under Flange Height: 0.710 inches nominal
Seat Angle In Deg: 30.000 nominal
Seal Accommodation Type: recessed
Thread Quantity Per Inch: 11-1/2 single threaded portion
Nominal Thread Size: 3.459 inches single threaded portion
Seating Surface Shape: angular
Material: nickel alloy overall
Material Document And Classification: qq-n-281 fed spec single material response overall
Style Designator: threaded flanged
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
26M77-100 ITEM 17	Valve Seat
845-2445066 ITEM 17	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-217-0016?

The FSCG of the NSN 4820-01-217-0016 is 4820

Does the NSN 4820-01-217-0016 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-217-0016 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 4820-01-217-0016 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-217-0016 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 4820-01-217-0016 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Fri, Sep 20, 1985