Keystone Electronics · Electronic Components
8421
STDOFF HEX M/F 6-32 1.375"L ALUM
Part Number8421
ManufacturerKeystone Electronics
AvailabilityAvailable to order — request a quote
Specifications
NSN5960-00-914-0144 (NSN)
Federal Item NameELECTRON TUBE
Federal Supply Class5960 — Electron Tubes
Nondefinitive Spec Std Data8421 TYPE
Cancelled NSN5960-00-931-6986 (cancelled)
End TypeEXTERNAL THREAD SECOND END
Conduit Type AccommodatedRIGID METALLIC THICKWALL FIRST END
Surface TreatmentZINC
Item Accommodated Trade Size1.250 INCHES FIRST END
Furnished ItemsLOCKNUT AND RETAINING RING
Style DesignatorSTRAIGHT
MaterialIRON MALLEABLE
Hazardous Locations EnvironmentalCEMENT TIGHT
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 8421 available?
We can source 8421 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 8421 by Keystone Electronics obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 8421 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 8421?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 8421?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.