4820-00-580-4140

Find complete technical information, availability, and procurement data for: 4820-00-580-4140
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-580-4140

Item Name Code

22113

Assigment Date

01/26/1968 (58 years ago)

An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.

0.278 inches nominal under flange height, 0.326 inches minimum and 0.328 inches maximum body outside diameter, 0.187 inches nominal body inside diameter, 0.373 inches minimum and 0.380 inches maximum flange diameter, 0.069 inches minimum and 0.328 inches maximum flange seat to disk end height

Product Characteristics

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

Flange Diameter: 0.373 inches minimum and 0.380 inches maximum
Body Outside Diameter: 0.326 inches minimum and 0.328 inches maximum
Body Inside Diameter: 0.187 inches nominal
Flange Seat To Disk End Height: 0.069 inches minimum and 0.328 inches maximum
Under Flange Height: 0.278 inches nominal
Hardness Rating: 32.0 rockwell c minimum and 36.0 rockwell c maximum overall
Nominal Thread Size: 0.112 inches single threaded portion
Seating Surface Shape: flat
Material: steel overall
Surface Treatment: passivate overall
Style Designator: plain flanged
Thread Series Designator: unc single threaded portion
Fsc Application Data: servocylinderautomatic pilot system,aircraft

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
30000404	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-00-580-4140?

The FSCG of the NSN 4820-00-580-4140 is 4820

Does the NSN 4820-00-580-4140 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-580-4140 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 4820-00-580-4140 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-580-4140 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 4820-00-580-4140 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Fri, Jan 26, 1968