MIL-SPEC · Electronic Components
M28859/4-03
Contact, Electrical
Part NumberM28859/4-03
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-279-5249 (NSN)
Federal Item NameCONTACT,ELECTRICAL
Federal Supply Class5999 — Miscellaneous Electrical Components
MaterialCOPPER ALLOY BODY AND CONTACT
Overall Width0.032 INCHES MINIMUM AND 0.035 INCHES MAXIMUM
Pin Length0.350 INCHES MINIMUM
Overall Length0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM
Pin Width0.022 INCHES MINIMUM AND 0.025 INCHES MAXIMUM
Mounting MethodFORCE FIT
Overall Height0.022 INCHES MINIMUM AND 0.025 INCHES MAXIMUM
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 M28859/4-03 available?
We can source M28859/4-03 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 M28859/4-03 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M28859/4-03 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 M28859/4-03?
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 M28859/4-03?
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.