Lockheed Martin · Electronic Components
81A5-28-21P
Connector, Receptacle, Electrical
Part Number81A5-28-21P
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-00-583-8892 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Federal Supply Class5935 — Connectors, Electrical
Distance From Mounting Shoulder To0.812 INCHES MINIMUM AND 0.828 INCHES MAXIMUM
Contact Position Arrangement Style28-21 SINGLE MATING END
Center To Center Distance Between1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM
Mating End Quantity1
Environmental ProtectionEXPLOSION PROOF AND SALT WATER RESISTANT
Overall Width2.020 INCHES MAXIMUM
Shell MaterialALUMINUM ALLOY
Thread Quantity Per Inch10
Shell Surface TreatmentANODIZE
Contact Maximum Ac Voltage Rating500.0 SINGLE MATING END SINGLE CONTACT GROUPING
Contact RemovabilityNONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Vendor Part Numbers10-107228-21P, 068338170
Cancelled NSN5935-00-950-3277 (cancelled)
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 81A5-28-21P available?
We can source 81A5-28-21P 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 81A5-28-21P by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 81A5-28-21P 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 81A5-28-21P?
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 81A5-28-21P?
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.