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ST7M398 Check Valve

4820-01-045-8708

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Official Item Classification

Name
Check Valve
Part Number
ST7M398
(NSN) National Stock Number
4820-01-045-8708
(FSG) Federal Supply Group
48 Valves
(FSC) Federal Supply Classification
4820 Nonpowered Valves
(INC) Item Name Code
05487
(FIIG) Federal Item Identification Guide
A530B0
Date
08/09/1977 (49 years ago)

spring disk loading method, disk flow control device, 3a 1st end thread class, right-hand all ends thread direction, 3b 2nd end thread class

Specs & Compatibility

Thread Class

3a 1st end

Thread Class

3b 2nd end

Thread Direction

right-hand all ends

Flow Control Device

disk

Disk Loading Method

spring

Maximum Operating Temp

300.0 fahrenheit single response

Connection Style

flared (tube) 1st end

Connection Style

gasket seal (boss) 2nd end

Valve Operation Method

automatic

Connection Type

threaded external tube 1st end

Connection Type

threaded internal boss 2nd end

Mounting Position

horizontal or vertical

Thread Quantity Per Inch

18 all ends

Maximum Operating Pressure

60.0 pounds per square inch single response

Nominal Thread Size

0.563 inches all ends

Seat Angle

37.0 degrees 1st end

Special Features

inlet flow from boss end

Material

aluminum alloy body

Material

aluminum alloy flow control device

Material

rubber synthetic seat

Material Document And Classification

qq-a-225/6 fed spec single material response body

Material Document And Classification

qq-a-225/6 fed spec single material response flow control device

Media For Which Designed

fuel/oil, hydrocarbon single response

Surface Treatment

anodize

Surface Treatment Document And Classification

mil-a-8625,type 2 mil spec single treatment response

Style Designator

straight thru

Thread Series Designator

unjf all ends

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0005487

Related Hardware Products

Part Number Description
2S2596 Check Valve
P71-533 Check Valve
ST7M398 Check Valve
ST7M398-1 Check Valve
ZE2CV06-1 Check Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-045-8708?
The FSCG of the NSN 4820-01-045-8708 is 4820
Does the NSN 4820-01-045-8708 have a Schedule B code assigned?
Yes, the Schedule B code is 8481309000
Does NSN 4820-01-045-8708 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 4820-01-045-8708 contain precious materials?
Precious metal content is unknown
Does NSN 4820-01-045-8708 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 4820-01-045-8708 was assigned to the Federal Catalog?
It was assigned 49 years ago, on Tue, Aug 9, 1977