4820-00-256-3704

Find complete technical information, availability, and procurement data for: 4820-00-256-3704
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-256-3704

Item Name Code

35224

Assigment Date

01/01/1963 (63 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.

4.000 inches nominal outside diameter, 0.750 inches nominal overall height, 150.0 fahrenheit nominal temp rating, 75.0 pounds per square inch nominal pressure rating, 0.781 inches nominal inside diameter

Product Characteristics

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

Inside Diameter: 0.781 inches nominal
Outside Diameter: 4.000 inches nominal
Overall Height: 0.750 inches nominal
Temp Rating: 150.0 fahrenheit nominal
Pressure Rating: 75.0 pounds per square inch nominal
Material: rubber natural
Material Document And Classification: mil-v-2741, type b, class 1 mil spec single material response
Media For Which Designed: steam
Style Designator: plain

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
BB61S47-085PC136	Valve Disk
BB61S47-088PC136	Valve Disk
G88P136	Valve Disk
G89PC136	Valve Disk

FAQs

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

What is the FSCG of the NSN 4820-00-256-3704?

The FSCG of the NSN 4820-00-256-3704 is 4820

Does the NSN 4820-00-256-3704 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-256-3704 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 4820-00-256-3704 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-256-3704 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 4820-00-256-3704 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963