4820-01-504-7557

Find complete technical information, availability, and procurement data for: 4820-01-504-7557
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-504-7557

Item Name Code

22113

Assigment Date

02/07/2003 (23 years ago)

A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes:shaft(1), straight; and axle(1), straight.

0.250 inches nominal overall height, nssn class submarine, towed sonar hull and backup valve end item identification, 0.562 inches nominal body inside diameter, 1.0620 inches nominal body outside diameter, 0.281 inches nominal seat radius

Product Characteristics

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

Overall Height: 0.250 inches nominal
Body Outside Diameter: 1.0620 inches nominal
Body Inside Diameter: 0.562 inches nominal
End Item Identification: nssn class submarine, towed sonar hull and backup valve
Seat Radius: 0.281 inches nominal
Seating Surface Shape: radial
Special Features: mearthane valve seat material
Material: plastic polyurethane overall
Material Document And Classification: md-71gg mfr ref single material response overall
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
2640-801X01 ITEM 16	Valve Seat
264080101-0016	Valve Seat
563-7286781-92	Valve Seat
H684-1505-92	Valve Seat

FAQs

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

What is the FSCG of the NSN 4820-01-504-7557?

The FSCG of the NSN 4820-01-504-7557 is 4820

Does the NSN 4820-01-504-7557 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-01-504-7557 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 4820-01-504-7557 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-504-7557 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 4820-01-504-7557 was assigned to the Federal Catalog?

It was assigned 23 years ago, on Fri, Feb 7, 2003