Boeing · Electronic Components
21-55000-4188
Cable Assembly, Power, Electrical
Part Number21-55000-4188
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN6150-00-120-0542 (NSN)
Federal Item NameCABLE ASSEMBLY,POWER,ELECTRICAL
Federal Supply Class6150 — Electric Power and Distribution Equipment
Overall Length28.833 FEET
Cross Sectional Shape StyleROUND
Criticality Code JustificationFEAT
Color Coding Document21-55000-81205 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTUR
Conductor Quantity4
Cross Section Outside Diameter2.074 INCHES NOMINAL
Conductor FormSTRANDED ALL CONDUCTORS
Nuclear Hardness Critical FeatureHARDENED
MaterialCOPPER CORE CONDUCTOR ALL CONDUCTORS
Conductor Arrangement And Quantity4 SINGLES
Style DesignatorJACK AND EXTERNAL CONNECTOR
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 21-55000-4188 available?
We can source 21-55000-4188 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 21-55000-4188 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21-55000-4188 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 21-55000-4188?
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 21-55000-4188?
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.