6D148B4-1

View detailed technical data, stock status, and sourcing information for: 6D148B4-1
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-105-1426

Item Name Code

22113

Assigment Date

07/08/1968 (58 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.

0.380 inches minimum and 0.385 inches maximum body inside diameter, 0.058 inches minimum and 0.063 inches maximum flange seat to disk end height, 0.122 inches minimum and 0.143 inches maximum single threaded portion thread length, 3a single threaded portion thread class, 0.608 inches minimum and 0.614 inches maximum flange 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: 3a single threaded portion
Thread Length: 0.122 inches minimum and 0.143 inches maximum single threaded portion
Flange Diameter: 0.608 inches minimum and 0.614 inches maximum
Body Inside Diameter: 0.380 inches minimum and 0.385 inches maximum
Flange Seat To Disk End Height: 0.058 inches minimum and 0.063 inches maximum
Under Flange Height: 0.187 inches minimum and 0.192 inches maximum
Seat Angle In Deg: 60.000 nominal
Thread Quantity Per Inch: 20 single threaded portion
Nominal Thread Size: 0.500 inches single threaded portion
Seating Surface Shape: angular
Material: aluminum alloy overall
Surface Treatment: anodize overall
Style Designator: threaded flanged
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
6D148B4-1	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-105-1426?

The FSCG of the NSN 4820-00-105-1426 is 4820

Does the NSN 4820-00-105-1426 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-105-1426 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 4820-00-105-1426 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-105-1426 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 4820-00-105-1426 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Mon, Jul 8, 1968