4820-00-858-1687

Find complete technical information, availability, and procurement data for: 4820-00-858-1687
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-858-1687

Item Name Code

05487

Assigment Date

01/01/1962 (64 years ago)

A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes:flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see washer, flat; shim; bearing, washer, thrust; and spacer ring. Excludes:disk, valve; seal, nonmetallic angle; seal, nonmetallic channel; seal, nonmetallic special shaped section; shielding gasket, electronic; and ring, sealing jar.

3b 1st end thread class, disk flow control device, 3b 2nd end thread class, right-hand 2nd end thread direction, right-hand 1st end thread direction

Product Characteristics

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

Thread Class: 3b 1st end
Thread Class: 3b 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Connection Style: gasket seal (boss) 1st end
Connection Style: gasket seal (boss) 2nd end
Connection Type: threaded internal boss 1st end
Connection Type: threaded internal boss 2nd end
Mounting Facility: bracket
Mounting Position: horizontal
Thread Quantity Per Inch: 18 1st end
Thread Quantity Per Inch: 20 2nd end
Nominal Thread Size: 0.500 inches 2nd end
Nominal Thread Size: 0.562 inches 1st end
Style Designator: straight thru
Thread Series Designator: unf 1st end
Thread Series Designator: unf 2nd end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2995-00-792-6918	No Name Available	01/01/1962

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
F59A0017	Check Valve
K-1323-1	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-858-1687?

The FSCG of the NSN 4820-00-858-1687 is 4820

Does NSN 4820-00-858-1687 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 4820-00-858-1687 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-858-1687 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 4820-00-858-1687 was assigned to the Federal Catalog?

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