4820-01-077-8771

Find complete technical information, availability, and procurement data for: 4820-01-077-8771
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-077-8771

Item Name Code

77777

Assigment Date

06/01/1979 (47 years ago)

A rigid or flexible item of various shapes attached to a structure for the purpose of providing access for inspection, service, replacement of components and/or adjustments or mounting operations. It is designed to be attached by means of bolt holes, slots, mounting ears, tabs, and the like. To permit access, the mounted cover requires partial or complete removal. It may include an observation window. For items permanently attached by hinges and the like, see door, access (as modified). Excludes:all covers not specifically designed to provide access for the purposes listed above.

bronze,nickel-aluminum,mil-b-24059; polytetrafluoroethylene coated per general note 10; 6.250 in. dia;6.500-12un-3a; 45 deg chamfer to 6.360 in. dia; 2 holes 180 deg apart 0.312 in. dia 0.750 in. deep for spanner wrench; 1.440 in. h o/a general characteristics item description, ssbn trident class end item identification

Product Characteristics

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

End Item Identification: ssbn trident class
General Characteristics Item Description: bronze,nickel-aluminum,mil-b-24059; polytetrafluoroethylene coated per general note 10; 6.250 in. dia;6.500-12un-3a; 45 deg chamfer to 6.360 in. dia; 2 holes 180 deg apart 0.312 in. dia 0.750 in. deep for spanner wrench; 1.440 in. h o/a

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
520-4674721 ITEM9	Valve Collar
87615-2003 ITEM9	Valve Collar

FAQs

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

What is the FSCG of the NSN 4820-01-077-8771?

The FSCG of the NSN 4820-01-077-8771 is 4820

Does NSN 4820-01-077-8771 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 4820-01-077-8771 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-077-8771 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 4820-01-077-8771 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Fri, Jun 1, 1979