52-40F 1 1/2IN.

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-246-2819

Item Name Code

35935

Assigment Date

12/11/1986 (39 years ago)

A valve designed to relieve internal pressure from gear housings, automotive axles, differentials, transmissions and the like. May or may not be threaded on one end. For items with relief pressure ratings see valve (1), safety relief.

5.000 inches all ends nominal outside diameter, 4 all ends bolt hole quantity, round with holes all ends flange shape, flange all ends connection type, 0.438 inches all ends nominal thickness

Product Characteristics

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

Bolt Hole Quantity: 4 all ends
Flange Shape: round with holes all ends
Connection Type: flange all ends
Nominal Outside Diameter: 5.000 inches all ends
Nominal Thickness: 0.438 inches all ends
Bolt Hole Nominal Diameter: 0.625 inches all ends
Bolt Circle Nominal Diameter: 3.875 inches all ends
Flange Face Design: plain all ends
Material: copper alloy body

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
52-40F 1 1/2IN.	Vent Valve
52-40F 1 1/2IN.BRONZE	Vent Valve

FAQs

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

What is the FSCG of the NSN 4820-01-246-2819?

The FSCG of the NSN 4820-01-246-2819 is 4820

Does the NSN 4820-01-246-2819 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-246-2819 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 4820-01-246-2819 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-246-2819 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 4820-01-246-2819 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Dec 11, 1986