NSN Part 559B-1M-4 – Get a Competitive Quote

We’re pleased to announce that part number 559B-1M-4 is available and ready to ship from our inventory. This part is a Valve Safety Relief. NSN for this part number is 4820009738345. Are you interested in a quote for this part number? Just fill out the form provided here to get started. 

Part number 559B-1M-4 manufactured by Circor Aerospace Inc, Raytheon Company. Your quote will be calculated on the basis of your answers to asterisk-marked (*) fields such as Needs Parts By and Quantity (ea). Please make sure you fill them out completely, so that we may provide the best quote possible. Within 15 minutes of receiving this form, a dedicated sales representative will respond to your RFQ by email or by phone.

Part No. 559B-1M-4 Details

CONTACT INFORMATION “*” Required fields are compulsory

* By clicking this box, I acknowledge that I have read and accept the ASAP Semiconductor Terms and Conditions and agree that all quotes and purchase orders are exclusively subject to the ASAP Semiconductor Terms and Conditions
  • ASAP Semiconductor is a wholly independent aftermarket parts distributor.
  • This website is intended for quotations based on part numbers only. Please DO NOT submit drawings, technical data, or other specifications through this portal.

Note : We will not share your information to any third parties.

Aviation Store Online, owned and operated by ASAP Semiconductor, is a leading supplier of NSN parts, with more than 10 million NSNs in stock.

The National Stock Number or NATO Stock Number (NSN) is assigned to items that are procured, stocked, and issued through the federal supply system. The NSN is recognized by the United States Department of Defense and the North Atlantic Treaty Organization (NATO). NSNs are administered by the Defense Logistics Agency. To learn more about part number 559B-1M-4 under FSC 4820 Valves Nonpowered and NIIN 009738345, please call us on our toll-free number +1-505-365-1770 or email us at sales@aviationstoreonline.com.

Part Number NSN Item Name Manufacturer (CAGE) FSC Details NIIN
559B-1M-4 4820009738345 Valve Safety Relief Circor Aerospace Inc (91816) 4820 Valves Nonpowered 009738345
4820009738345 Valve Safety Relief Raytheon Company (49956) 4820 Valves Nonpowered 009738345

NSN Information for Part Number 559B-1M-4 with NSN 4820-00-973-8345, 4820009738345

NSNFSCNIINCLSHazmatDEMILCancelled NSN
4820-00-973-8345

Item Description:

VALVE,SAFETY RELIEF

48200097383450N
CIICHCCESDPMICCriticalityENAC
U U
Part NumberISCRNVCRNCCHCCMSDSSADC
559B-1M-4223

Characteristics Data of NSN 4820-00-973-8345, 4820009738345

MRCCriteriaCharacteristic
AAARNOMINAL PIPE SIZE ACCOMMODATED0.125 INCHES 1ST END
AAJFTHREAD DIRECTIONRIGHT-HAND 1ST END
ADQUFLOW CONTROL DEVICEDISK
ADSUDISK LOADING METHODSPRING
AEHZMAXIMUM OPERATING TEMP-40.0 DEG FAHRENHEIT 1ST RESPONSE
AEHZMAXIMUM OPERATING TEMP250.0 DEG FAHRENHEIT 2ND RESPONSE
AHNCCONNECTION STYLEPLAIN (PIPE) 1ST END
AQLRVALVE OPERATION METHODAUTOMATIC
AWLSCONNECTION TYPETHREADED EXTERNAL PIPE 1ST END
CQGMMAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
CQJXNOMINAL THREAD SIZE0.125 INCHES 1ST END
CSDCOPENING PRESSURE SETTING4.0 POUNDS PER SQUARE INCH
FEATSPECIAL FEATURESPOP-OFF TYPE
MATTMATERIALCOPPER ALLOY OVERALL
MEDAMEDIA FOR WHICH DESIGNEDACETYLENE 2ND RESPONSE
MEDAMEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MEDAMEDIA FOR WHICH DESIGNEDAMMONIA, GASEOUS 3RD RESPONSE
MEDAMEDIA FOR WHICH DESIGNEDHYDROGEN 5TH RESPONSE
MEDAMEDIA FOR WHICH DESIGNEDREFRIGERANT 12 4TH RESPONSE
STYLSTYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
THSDTHREAD SERIES DESIGNATORNPT 1ST END

We are an AS9120B, ISO 9001:2015, and FAA AC 0056B accredited company. Our advanced shipping facilities in California, Nevada, Illinois, Washington, Oregon, New York, Virginia, Pennsylvania, Minnesota, Massachusetts, Michigan, Wisconsin and Arizona, along with international locations in Alberta and Canada allow us to offer the most competitive lead times and shipping times in the industry. 

  Related NSN Components of 559B-1M-4

We are proud to supply every branch of the United States military


Why Choose Us?
Low Price Warrantied inventory at competitive prices
Find it fast Search the world's largest inventory of electronic components by manufacturer, category or part number
Get it fast All inventory ready to ship from our sellers
Quality guaranteed We sell only warrantied and traceable parts
Semiconductor's Certifications and Memberships
The only independent
distributor with a
NO CHINA SOURCING Pledge
  • All Orders are Fulfilled in the U.S.A.
  • All shipments must comply with U.S.A export laws.
  • No exceptions.
Intrepid Fallen Heroes Fund

“We Proudly Support Intrepid Fallen Heroes Fund that serves United States Military Personal experiencing the Invisible Wounds of War : Traumatic Brain Injury (TBI) and Post Traumatic Stress (PTS). Please visit website (www.fallenheroesfund.org) and help in their valiant effort”.

Thank You for Visiting Us today!

We Hope You'll Remember Us the Next Time If You’re Looking for Aircraft Parts.

Request for Quote

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.