21F58779-175-00CP

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-177-0002

Item Name Code

77777

Assigment Date

04/18/1984 (42 years ago)

1.250 in. width across flats,0.812 in. lg,threaded one end 1.000-20 nef-2b 0.609 in. deep general characteristics item description, cleaning, packaging, and marking iaw mil-std-1330d reference number differentiating characteristics, zzzy criticality code justification

Product Characteristics

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

Criticality Code Justification: zzzy
General Characteristics Item Description: 1.250 in. width across flats,0.812 in. lg,threaded one end 1.000-20 nef-2b 0.609 in. deep
Reference Number Differentiating Characteristics: cleaning, packaging, and marking iaw mil-std-1330d

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
21F58779-175-00	Valve Disc Locknut
21F58779-175-00CP	Valve Disc Locknut
F-58779	Valve Disc Locknut
F-58779CP	Valve Disc Locknut

FAQs

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

What is the FSCG of the NSN 4820-01-177-0002?

The FSCG of the NSN 4820-01-177-0002 is 4820

Does NSN 4820-01-177-0002 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 4820-01-177-0002 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-177-0002 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 4820-01-177-0002 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Wed, Apr 18, 1984