Home /
Catalog / US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir / SM-B-189681
US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SM-B-189681
Fuseholder, Extractor Post
Part NumberSM-B-189681
ManufacturerUS Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-00-509-5040 (NSN)
Federal Item NameFUSEHOLDER,EXTRACTOR POST
Federal Supply Class5920 — Fuses and Lightning Arresters
Body StyleBUSHING MOUNTED TYPE
MaterialCOPPER ALLOY CONTACT
Mounting Hole Quantity1
Overall Length2.188 INCHES NOMINAL
Overall Diameter0.813 INCHES NOMINAL
Bushing Diameter0.625 INCHES NOMINAL
Current Carrying Rating In Amps20.0
Environmental ProtectionDRIPPROOF AND VIBRATION PROOF
Interruption Indicator MethodNEON LAMP
Bushing Hole Diameter0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
Fuse Accommodation Quantity1
Vendor Part NumbersHKL-90-500
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 SM-B-189681 available?
We can source SM-B-189681 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 SM-B-189681 by US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SM-B-189681 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 SM-B-189681?
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 SM-B-189681?
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.