Whippany Actuation Systems · Electronic Components
E503M2-4
Brush, Electrical Contact
Part NumberE503M2-4
ManufacturerWhippany Actuation Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-01-121-4298 (NSN)
Federal Item NameBRUSH,ELECTRICAL CONTACT
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Largest Outside Diameter0.203 INCHES MAXIMUM
MaterialELECTROGRAPHITIC
Pressure Spring Type And Quantity1 CYLINDRICAL
Material Document And ClassificatiMORGANITE INC GRADE EG830 MFR REF SINGLE MATERIAL RESPONSE
Style DesignatorONE PIECE
Terminal Type And Quantity1 ROUND CAP
Shunt Insulation Provision And Qua1 UNINSULATED
Brush Shunt Length0.355 INCHES NOMINAL SINGLE SHUNT
Contact Face StyleCONCAVE
Radius0.250 INCHES NOMINAL
Thickness0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM
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 E503M2-4 available?
We can source E503M2-4 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 E503M2-4 by Whippany Actuation Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If E503M2-4 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 E503M2-4?
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 E503M2-4?
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.