Boeing · Electronic Components
4000-05031-03
Heat Sink, Electrical
Part Number4000-05031-03
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-423-9866 (NSN)
Federal Item NameHEAT SINK,ELECTRICAL-ELECTRONIC
Federal Supply Class5999 — Miscellaneous Electrical Components
MaterialALUMINUM ALLOY
Overall Width2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM
Surface Treatment Document And ClaMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE
Overall Length7.990 INCHES MINIMUM AND 8.010 INCHES MAXIMUM
Accommodated Device Mounting Hole26
Body StyleRECTANGULAR
Surface TreatmentANODIZE
Overall Height0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM
Material Document And ClassificatiQQ-A-250/11-T6 FED SPEC SINGLE MATERIAL RESPONSE
ESD/EMICode A — 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 4000-05031-03 available?
We can source 4000-05031-03 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 4000-05031-03 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4000-05031-03 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 4000-05031-03?
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 4000-05031-03?
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.