Westinghouse Electric Corp. · Electronic Components
4D8258-4
Brush, Electrical Contact
Part Number4D8258-4
ManufacturerWestinghouse Electric Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-00-238-9178 (NSN)
Federal Item NameBRUSH,ELECTRICAL CONTACT
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Head Length0.125 INCHES NOMINAL
Length1.125 INCHES NOMINAL
Brush Shunt Length2.312 INCHES NOMINAL SINGLE SHUNT
Material Document And ClassificatiSTACKPOLE CARBON CO,GR W687 MFR REF SINGLE MATERIAL RESPONSE
MaterialMETAL GRAPHITE
Style DesignatorONE PIECE
Width0.498 INCHES NOMINAL
Thickness0.248 INCHES NOMINAL
Shunt Insulation Provision And Qua1 UNINSULATED
Shunt Position Designator5
Contact Face StyleCONCAVE
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 4D8258-4 available?
We can source 4D8258-4 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 4D8258-4 by Westinghouse Electric Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4D8258-4 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 4D8258-4?
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 4D8258-4?
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.