Aavid Thermalloy · Electronic Components
5C-20
HEAT SINK, TO-5, 30°C/W
Part Number5C-20
ManufacturerAavid Thermalloy
AvailabilityAvailable to order — request a quote
Specifications
NSN5310-01-139-6791 (NSN)
Federal Item NameNUT,SELF-LOCKING,ROUND
MaterialSTEEL COMP 4130 OVERALL EXCEPT INSERT
Nominal Thread Size0.664 INCHES
Drive Point Depth0.080 INCHES NOMINAL
Thread DirectionRIGHT-HAND
Drive Point Quantity4
Thread Quantity Per Inch32
Thread SeriesUNS
Thread Class3B
Surface TreatmentOXIDE OVERALL EXCEPT INSERT
Nut StyleROUND
Federal Supply Class5310 — Nuts And Washers
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 5C-20 available?
We can source 5C-20 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 5C-20 by Aavid Thermalloy obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 5C-20 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 5C-20?
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 5C-20?
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.