Explore Parts That Fall Under NSN 4820-01-257-8680

Aerospace Exchange is your one-stop shop for dependable Valve Safety Relief items that have the National Stock Number (NSN) 4820-01-257-8680. On this page, you can find all products we carry tied to this NSN, including popular part numbers like 527E-350PSI, B527E, B527-350, 527-350PSI, and others. If any component below matches your requirements, simply click on the “RFQ” button alongside it to access one of our online quote request forms. All that we ask is that you supply us with enough information to best accommodate any particular restrictions or needs that you may have, and we will respond with a curated quote within 15 minutes of our receipt and review.

How Aerospace Exchange Is a Leading Source for Valve Safety Relief Parts

  • Competitive Pricing: By consistently leveraging our industry connections, market expertise, and purchasing power when sourcing inventory, we drive down costs for our customers. 
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Item Name Valve Safety Relief
INC Code 05488
Federal Supply Group (FSG) Valves
Federal Supply Class (FSC) 4820 Valves Nonpowered
National Item Identification Number (NIIN) 01-257-8680 (012578680)
NCB Code USA (01)
Manufacturer Henry Technologies Limited
Associated Parts Numbers of NSN 4820-01-257-8680
Part Number Manufacturer Item Name Cage Code Type Status RFQ
527E-350PSI henry technologies limited valve safety relief 28193 A A RFQ
B527E henry technologies limited valve safety relief 28193 A A RFQ
B527-350 henry technologies limited valve safety relief 28193 A A RFQ
527-350PSI henry technologies limited valve safety relief 28193 A A RFQ

Technical Characteristics of NSN 4820012578680

MRCCriteriaCharacteristic
AAJDTHREAD CLASS3A 2ND END
AAJFTHREAD DIRECTIONRIGHT-HAND ALL ENDS
ADQUFLOW CONTROL DEVICEDISK
ADSUDISK LOADING METHODSPRING
AHNCCONNECTION STYLEFLARED (TUBE) 2ND END
AHNCCONNECTION STYLEPLAIN (PIPE) 1ST END
AQLRVALVE OPERATION METHODAUTOMATIC
AWLSCONNECTION TYPETHREADED EXTERNAL PIPE 1ST END
AWLSCONNECTION TYPETHREADED EXTERNAL TUBE 2ND END
CBBLFEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
CQJXNOMINAL THREAD SIZE0.500 INCHES 1ST END
CQJXNOMINAL THREAD SIZE0.875 INCHES 2ND END
CQRBSEAT ANGLE45.0 DEGREES 2ND END
CSDCOPENING PRESSURE SETTING350.0 POUNDS PER SQUARE INCH
MATTMATERIALCOPPER ALLOY BODY
MATTMATERIALCOPPER ALLOY FLOW CONTROL DEVICE
MATTMATERIALCOPPER ALLOY SEAT
MEDAMEDIA FOR WHICH DESIGNEDREFRIGERANT 12 1ST RESPONSE
MEDAMEDIA FOR WHICH DESIGNEDREFRIGERANT 22 2ND RESPONSE
MEDAMEDIA FOR WHICH DESIGNEDREFRIGERANT 502 3RD RESPONSE
STYLSTYLE DESIGNATORANGLE
THSDTHREAD SERIES DESIGNATORNPT 1ST END
THSDTHREAD SERIES DESIGNATORUNJF 2ND END

Relevant Components for NSN - 4820-01-257-8680, 4820012578680
4820-00-835-3873 (4820008353873) 4820-01-431-2398 (4820014312398) 4820-01-009-8942 (4820010098942) 4820-01-273-3653 (4820012733653)
4820-01-274-9975 (4820012749975) 4820-01-600-7663 (4820016007663) 4820-01-338-4276 (4820013384276) 4820-01-233-6683 (4820012336683)
4820-01-018-1584 (4820010181584) 4820-01-322-8071 (4820013228071) 4820-01-318-2830 (4820013182830) 4820-01-340-5738 (4820013405738)

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