Cts Electronic Components (California) Inc. · Electronic Components
21L
Insert, Electron Tube Shield
Part Number21L
ManufacturerCts Electronic Components (California) Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5960-00-754-5821 (NSN)
Federal Item NameINSERT,ELECTRON TUBE SHIELD
Federal Supply Class5960 — Electron Tubes
Overall Length1.188 INCHES NOMINAL
Material Thickness0.012 INCHES NOMINAL
Fabrication MethodCORRUGATED
Overall Width1.000 INCHES NOMINAL
MaterialSILVER
Vendor Part Numbers736565-3, 144-004-0001
Cancelled NSN5960-00-631-3527 (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 21L available?
We can source 21L 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 21L by Cts Electronic Components (California) Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21L 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 21L?
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 21L?
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.