MIL-SPEC · Electronic Components
M87111/03-1A45
Heat Sink, Electrical
Part NumberM87111/03-1A45
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-290-6664 (NSN)
Federal Item NameHEAT SINK,ELECTRICAL-ELECTRONIC
Federal Supply Class5999 — Miscellaneous Electrical Components
Mounting Facility Type And Quantit1 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY
Overall Diameter0.584 INCHES MINIMUM AND 0.604 INCHES MAXIMUM
Unthreaded Mounting Hole Diameter0.313 INCHES MINIMUM AND 0.320 INCHES MAXIMUM FIRST MOUNTING FACILITY
Overall Height0.233 INCHES MINIMUM AND 0.267 INCHES MAXIMUM
Nominal Thread Size0.112 INCHES SECOND MOUNTING FACILITY
Test Data Document81349-MIL-87111 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA
MaterialALUMINUM ALLOY
Surface TreatmentANODIZE
Thread Class2B SECOND MOUNTING FACILITY
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 M87111/03-1A45 available?
We can source M87111/03-1A45 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 M87111/03-1A45 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M87111/03-1A45 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 M87111/03-1A45?
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 M87111/03-1A45?
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.