A11557C

View detailed technical data, stock status, and sourcing information for: A11557C
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part A11557C to receive an up to date pricing and availability quote by email.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-484-8412

Item Name Code

05488

Assigment Date

09/18/1970 (55 years ago)

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes:washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

copper alloy overall material, c/o two safety relief valves and one shutoff valve special features, 225.0 pounds per square inch opening pressure setting

Product Characteristics

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

Opening Pressure Setting: 225.0 pounds per square inch
Special Features: c/o two safety relief valves and one shutoff valve
Material: copper alloy overall

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
A11557C	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-484-8412?

The FSCG of the NSN 4820-00-484-8412 is 4820

Does the NSN 4820-00-484-8412 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-484-8412 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 4820-00-484-8412 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-484-8412 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 4820-00-484-8412 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Fri, Sep 18, 1970