Eaton Aerospace · Electronic Components
B4781
Contact, Electrical
Part NumberB4781
ManufacturerEaton Aerospace
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-00-434-4122 (NSN)
Federal Item NameCONTACT,ELECTRICAL
Federal Supply Class5999 — Miscellaneous Electrical Components
Style DesignatorPIN CONTACT
Surface TreatmentCADMIUM BODY AND CONTACT
Mounting Facility Quantity1
Pin Length1.250 INCHES NOMINAL
Mounting MethodUNTHREADED HOLE(S)
Overall Length3.855 INCHES NOMINAL
Terminal Type And Quantity1 SCREW AXIALLY AT ONE END
Surface Treatment Document And ClaQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE BODY AND CONTACT
Pin Diameter0.120 INCHES NOMINAL
Overall Diameter1.872 INCHES MAXIMUM
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 B4781 available?
We can source B4781 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 B4781 by Eaton Aerospace obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If B4781 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 B4781?
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 B4781?
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.