MIL-SPEC · Electronic Components
M28731/9C
Insert, Electrical Connector
Part NumberM28731/9C
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-143-3673 (NSN)
Federal Item NameINSERT,ELECTRICAL CONNECTOR
Federal Supply Class5935 — Connectors, Electrical
Overall Length2.593 INCHES NOMINAL
Thread DirectionRIGHT-HAND
Overall Width1.312 INCHES NOMINAL
Contact Material Document And ClasQQ-B-750 FED SPEC SINGLE MATERIAL RESPONSE SINGLE MATING END SINGLE CONTACT GROUPING
Thread Quantity Per Inch56
Guide Design And LocationHEXAGON SHAPE MALE POST RIGHT-HAND AT 9:00 OCLOCK
Included Contact TypeROUND PIN SINGLE MATING END SINGLE CONTACT GROUPING
Included Contact Quantity20 SINGLE MATING END SINGLE CONTACT GROUPING
Contact Surface Treatment DocumentMIL-G-45204 TY 2,GRADE D MIL SPEC 1ST TREATMENT RESPONSE AND QQ-N-290 CL 2 FED SPEC 2ND TREATMENT RESPONSE SINGLE MATIN
Test Data Document81349-MIL-C-38731 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Contact MaterialCOPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING
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 M28731/9C available?
We can source M28731/9C 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 M28731/9C by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M28731/9C 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 M28731/9C?
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 M28731/9C?
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.