281439-0001ITEM27

View detailed technical data, stock status, and sourcing information for: 281439-0001ITEM27
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-058-0047

Item Name Code

35224

Assigment Date

03/22/1978 (48 years ago)

A light transmitting item consisting of a transparent, flat glass body having two plane-parallel surfaces, either with only nonabsorbing dielectric coatings or absorbing and nonabsorbing coatings of a thickness nearly equivalent to the wavelength of the transmitted light. Interference begins at the thin bordering surfaces of the coatings, the penetrating light waves being superimposed on the reflected light waves. The item can be installed in various optical insturments, to serve as an eye protecting device.

nickel alloy material

Product Characteristics

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

Material: nickel alloy

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
148513-0721	Valve Disk
281439-0001ITEM27	Valve Disk

FAQs

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

What is the FSCG of the NSN 4820-01-058-0047?

The FSCG of the NSN 4820-01-058-0047 is 4820

Does the NSN 4820-01-058-0047 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-058-0047 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 4820-01-058-0047 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-058-0047 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 4820-01-058-0047 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Wed, Mar 22, 1978