NSN 4820-01-326-8481, 4820013268481
VALVE,BUTTERFLY

Federal Supply Classification: FSC 4820 - Valves, Nonpowered
National Item Identification Number: NIIN 013268481
Codification Country: United States
Item Name Code: INC 05489
Criticality: (Y) This item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: We have 1 qualified suppliers

Manufacture or supply this part?
Join our growing community of certified suppliers.

Let Us Know

CALL ABOUT NSN 4820-01-326-8481

Our client representatives are standing by to help fulfill your request.

+1-321-773-5710

REQUEST QUOTE for 4820-01-326-8481

Have a list that needs to be quoted? Upload it here.

Upload a List

DLMS^® Summary

National Stock Number 4820-01-326-8481

National Stock Number (NSN) 4820-01-326-8481, or NIIN 013268481, (valve,butterfly) was assigned October 3, 1990 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 4 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

This part number has not been procured by the US Government in over 5 years.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jan 30, 2020, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

This NSN is assigned to Item Name Code (INC) 05489. [A VALVE THAT CONTROLS FLOW BY A CIRCULAR DISK, OR A PAIR OF SEMICIRCULAR DISKS, ATTACHED TO A COMMON SPINDLE OR LEVER TURNING ON A DIAMETRAL AXIS.]. This item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 4820013268481 does not contain precious metals.

This information was last updated on Aug 01, 2025.

Technical Characteristics

FURNISHED ITEMS AND QUANTITY: (TMQY) 1 INDICATOR
SPECIAL FEATURES: (FEAT) ITEMS ARE BEING CODED AS CRITICAL TO INSURE SOURCE INSPECTION WILL BE PERFORMED AT THE POINT OF MANUFACTURE, PRIOR TO MATERIAL RECEIPT BY THE US NAVY OR OTHER DOD COMPONENTS. THESE ITEMS ARE PIECE PARTS OR END ITEMS IN SUPPORT OF VITAL MILITARY HARDWARE NECESSARY TO SUSTAIN THE SUCCESSFUL MISSION OF THE SHIPS, SUBMARINES, AND SHORE STATIONS OF THE US NAVY. CRITICAL FEATURES INCLUDING, BUT NOT LIMITED TO, DIMENSIONS, TOLERANCES/CLEARANCES, ELECTRONIC CHARACTERISTICS, AND METALLURGICAL PROPERTIES WILL BESPECIFIED FOR GOVERNMENT Q AR (QUALITY ASSURANCE REPRESENTATIVES) TO INSURE THE HIGHEST POSSIBLE DEGREE OF QUALITY AND RELIABILITY OF THESE PARTS BEING DELIVERED UNDER NAVICP CONTRACTS;SIZE 8.0IPS;W/GEAR OPERATOR
MATERIAL: (MATT) STEEL COMP 316 FLOW CONTROL DEVICE
MATERIAL: (MATT) STEEL SEAT
MATERIAL: (MATT) STEEL COMP 316 BODY
NONDEFINITIVE SPEC/STD DATA: (ZZZT) A STYLE AND 1 TYPE
VALVE OPERATION METHOD: (AQLR) MANUAL
CRITICALITY CODE JUSTIFICATION: (CRTL) FEAT