Dumore · Electronic Components
R457-0800
Brush, Electrical Contact
Part NumberR457-0800
ManufacturerDumore
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-00-738-6271 (NSN)
Federal Item NameBRUSH,ELECTRICAL CONTACT
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Spring Free Length2.900 INCHES NOMINAL
Style DesignatorONE PIECE
Shunt Insulation Provision And Qua1 UNINSULATED
Material Document And ClassificatiSTACKPOLE CARBON CO,GRADE AC18 MFR REF SINGLE MATERIAL RESPONSE
Pressure Spring Type And Quantity1 CYLINDRICAL
Terminal Type And Quantity1 ROUND CAP
MaterialELECTROGRAPHITIC
Brush Shunt Length1.750 INCHES NOMINAL SINGLE SHUNT
Top StyleCYLINDRICAL HEAD
Contact Face StyleCONCAVE
Width0.500 INCHES NOMINAL
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 R457-0800 available?
We can source R457-0800 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 R457-0800 by Dumore obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If R457-0800 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 R457-0800?
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 R457-0800?
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.