N1645421 Safety Relief Valve

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4820-00-875-5282

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Official Item Classification

Name: Safety Relief Valve
Part Number: N1645421
(NSN) National Stock Number: 4820-00-875-5282
(FSG) Federal Supply Group: 48 Valves
(FSC) Federal Supply Classification: 4820 Nonpowered Valves
(INC) Item Name Code: 05488
(FIIG) Federal Item Identification Guide: A046B0
Date: 01/01/1962 (64 years ago)

right-hand all ends thread direction, inside screw bonnet type, spring disk loading method, disk flow control device, threaded bonnet attachment method

Specs & Compatibility

Thread Direction

right-hand all ends

Flow Control Device

disk

Bonnet Type

inside screw

Bonnet Attachment Method

threaded

Disk Loading Method

spring

Renewable Seat Ring Type

threaded

Connection Style

plain,optional end(pipe) all ends

Valve Operation Method

automatic

Connection Type

threaded internal pipe all ends

Nominal Thread Size

0.500 inches all ends

Special Features

one cap-chain

Material

steel body

Material

steel corrosion resisting flow control device

Surface Treatment

paint

Style Designator

angle

Thread Series Designator

npt all ends

Regulatory Compliance

Precious Metals Indicator

Precious metal content is unknown

Criticality Code

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

Hazardous Metals Indicator

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

0005488

Related Hardware Products

Part Number	Description
1645420	Safety Relief Valve
1645421	Safety Relief Valve
N1645421	Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-00-875-5282?

The FSCG of the NSN 4820-00-875-5282 is 4820

Does the NSN 4820-00-875-5282 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-875-5282 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 4820-00-875-5282 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-875-5282 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 4820-00-875-5282 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962