Lockheed Martin · Electronic Components
3K11378-105
Cover, Junction Box
Part Number3K11378-105
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5975-00-869-5541 (NSN)
Federal Item NameCOVER,JUNCTION BOX
Federal Supply Class5975 — Electrical Hardware and Supplies
Cover TypeFLAT
Distance From Center Of Mounting H3.590 INCHES NOMINAL
MaterialPLASTIC COVER
Style DesignatorRECTANGULAR-FLAT SIDE-END-CORNER MOUNTED
Cover Attachment MethodTURN-LOCK STUDS
Overall Height0.410 INCHES NOMINAL
Second Center To Center Distance B3.150 INCHES NOMINAL
Overall Width21.580 INCHES NOMINAL
Cover Mounting Hole Quantity10
Overall Length28.300 INCHES NOMINAL
Mounting Hole Diameter0.294 INCHES MINIMUM AND 0.301 INCHES MAXIMUM
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 3K11378-105 available?
We can source 3K11378-105 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 3K11378-105 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 3K11378-105 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 3K11378-105?
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 3K11378-105?
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.