Lockheed Martin · Electronic Components
LS4999A21-40
Marker Strip, Terminal Board
Part NumberLS4999A21-40
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5940-00-817-3725 (NSN)
Federal Item NameMARKER STRIP,TERMINAL BOARD
Federal Supply Class5940 — Lugs, Terminals, and Terminal Strips
Features ProvidedMOUNTING HOLE
MaterialGLASS CLOTH
Inscription21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Length12.380 INCHES NOMINAL
Marking DesignationLEGEND LOCATION NOT OTHERWISE SPECIFIED
Design ShapeRECTANGLE
Width1.060 INCHES NOMINAL
Thickness0.013 INCHES NOMINAL
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 LS4999A21-40 available?
We can source LS4999A21-40 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 LS4999A21-40 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If LS4999A21-40 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 LS4999A21-40?
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 LS4999A21-40?
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.