4820-01-646-5998

Find complete technical information, availability, and procurement data for: 4820-01-646-5998
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-646-5998

Item Name Code

16996

Assigment Date

07/24/2015 (11 years ago)

oval w/ bolt holes first end flange shape style, -65.0 fahrenheit and 320.0 fahrenheit temp rating, straight thru body style, 0.125 inches nominal first end flange thickness, oil media for which designed

Product Characteristics

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

Body Style: straight thru
Temp Rating: -65.0 fahrenheit and 320.0 fahrenheit
Media For Which Designed: oil
First End Flange Shape Style: oval w/ bolt holes
First End Flange Thickness: 0.125 inches nominal
First End Flange Length: 1.812 inches nominal
First End Flange Width: 0.875 inches nominal
First End Flange End Radius: 0.250 inches nominal
First End Bolt Hole Quantity: 2
First End Bolt Hole Diameter: 0.221 inches nominal
Second End Relationship With First End: not identical
Second End Style Designator: grooved
Body Outside Diameter: 0.798 inches nominal
Flow Control Device: stem and integral disk
First End Center To Center Distance Between Holes Along Length: 1.312 inches nominal
Temp Control Device Type: thermostatic
Part Name Assigned By Controlling Agency: valve bypass hydr; valve, bypass thermal and pressure
Special Features: fully open: 165 deg and below; starts to close: 165-180 deg; fully closed: 180 deg; fluid: mil-h-83282; valve cracking pressure: 40 psid max, at 190-195 deg f; valve to reseat at 30 psid min
Material: aluminum alloy 6061 body
Material: aluminum alloy 6061 seat
Material: aluminum alloy 6061 stem
Material Document And Classification: qq-a-200/8, alloy 6061, t6 fed spec single material response body
Material Document And Classification: qq-a-200/8, alloy 6061, t6 fed spec single material response seat
Material Document And Classification: qq-a-200/8, alloy 6061, t6 fed spec single material response stem
Surface Treatment: anodize outside
Surface Treatment Document And Classification: mil-a-8625, type 2 mil spec single treatment response outside

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
11-878	Pressure and Temper Relief Valve
60875-002	Pressure and Temper Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-646-5998?

The FSCG of the NSN 4820-01-646-5998 is 4820

Does the NSN 4820-01-646-5998 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-646-5998 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-01-646-5998 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-646-5998 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 4820-01-646-5998 was assigned to the Federal Catalog?

It was assigned 11 years ago, on Fri, Jul 24, 2015