MIL-SPEC · Electronic Components
NAS4121-017B
Heat Sink, Electrical
Part NumberNAS4121-017B
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-209-0650 (NSN)
Federal Item NameHEAT SINK,ELECTRICAL-ELECTRONIC
Federal Supply Class5999 — Miscellaneous Electrical Components
Test Data Document81349-MIL-H-87111 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Overall Width1.810 INCHES NOMINAL
Overall Height0.500 INCHES NOMINAL
MaterialALUMINUM ALLOY
Surface TreatmentANODIZE
Overall Length1.810 INCHES NOMINAL
Cancelled NSN5999-01-152-5203 (cancelled)
ESD/EMICode B — ESD/EMI sensitive item
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 NAS4121-017B available?
We can source NAS4121-017B 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 NAS4121-017B by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If NAS4121-017B 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 NAS4121-017B?
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 NAS4121-017B?
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.