4820-01-257-1720

Find complete technical information, availability, and procurement data for: 4820-01-257-1720
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-257-1720

Item Name Code

05485

Assigment Date

06/13/1987 (39 years ago)

A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends with threads of the same nominal diameter. All or part of the unthreaded section has a cross-sectional diameter greater than the nominal stud size plus 0.020 inches (0.508 mm). It may be thread relieved. See also stud, locked in.

disk flow control device, outside screw-yoke bonnet type, 1.171 inches all ends nominal pipe size accommodated, threaded bonnet attachment method, threaded renewable seat ring type

Product Characteristics

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

Nominal Pipe Size Accommodated: 1.171 inches all ends
Flow Control Device: disk
Bonnet Type: outside screw-yoke
Bonnet Attachment Method: threaded
Renewable Seat Ring Type: threaded
Connection Style: reduced socket (tube) all ends
Valve Operation Method: manual
Connection Type: unthreaded internal pipe all ends
Criticality Code Justification: zzzy
Special Features: inspection per mil-i-45208; shipment and storage per mil-std-129; clean per mil-std-767
Material: copper alloy body
Material: nickel alloy k-500 flow control device
Material: nickel alloy k-500 stem
Material Document And Classification: astm b-164 assn std single material response stem
Material Document And Classification: astm b-61 assn std single material response body
Material Document And Classification: qq-m-288 fed spec single material response flow control device
Media For Which Designed: water-oil-gas single response
Style Designator: straight thru
Reference Number Differentiating Characteristics: material will be in accordance with ships parts control center activity hx quality control,manufacturing and testing specifications

FAQs

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

What is the FSCG of the NSN 4820-01-257-1720?

The FSCG of the NSN 4820-01-257-1720 is 4820

Does NSN 4820-01-257-1720 require demilitarization?

Usml or ccl military items - demil required. Item managers,, equipment specialists, or product specialists must furnish special demilinstructions. (note 3).

Does NSN 4820-01-257-1720 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-257-1720 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 4820-01-257-1720 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sat, Jun 13, 1987