Purolator Products · Electronic Components
491800
Holder, Electrical Contact Brush
Part Number491800
ManufacturerPurolator Products
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-00-405-4852 (NSN)
Federal Item NameHOLDER,ELECTRICAL CONTACT BRUSH
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Furnished Items And Quantity1 BRUSH
Terminal TypeSOLDER LUG
Inside Diameter0.219 INCHES NOMINAL
Style DesignatorROUND
Terminal Quantity1
Width Across Corners0.994 INCHES NOMINAL
Top Thread LocationEXTERNAL
Brush Spring AdjustabilityNONADJUSTABLE
Brush Pressure Spring Type AccommoHELICAL COMPRESSION
Overall Length3.437 INCHES NOMINAL
Brush Quantity Accommodated Per Ho1
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 491800 available?
We can source 491800 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 491800 by Purolator Products obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 491800 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 491800?
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 491800?
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.