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Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SMB646621
Insulator, Washer
Part NumberSMB646621
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5970-00-144-8099 (NSN)
Federal Item NameINSULATOR,WASHER
Federal Supply Class5970 — Electrical Insulators
Overall Height0.002 INCHES MINIMUM AND 0.004 INCHES MAXIMUM
Style DesignatorROUND, FLAT
MaterialMICA OVERALL
Inside Diameter0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM
Outside Diameter0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM
Vendor Part Numbers77A0828-1
Cancelled NSN5970-00-416-8721 (cancelled)
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 SMB646621 available?
We can source SMB646621 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 SMB646621 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 SMB646621 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 SMB646621?
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 SMB646621?
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.