William Spencer · Electronic Components
A21843-1
Brush, Electrical Contact
Part NumberA21843-1
ManufacturerWilliam Spencer
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-00-538-6782 (NSN)
Federal Item NameBRUSH,ELECTRICAL CONTACT
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Terminal Type And Quantity1 STRAIGHT W/SLOT
Style DesignatorONE PIECE
Brush Shunt Length4.000 INCHES NOMINAL SINGLE SHUNT
Contact Face StyleCONCAVE
Terminal Slot Width0.281 INCHES NOMINAL
Top StyleFLAT
Body StyleRECTANGULAR SLIP RING
MaterialELECTROGRAPHITIC
Length1.500 INCHES NOMINAL
Width0.375 INCHES NOMINAL
Thickness0.625 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 A21843-1 available?
We can source A21843-1 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 A21843-1 by William Spencer obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A21843-1 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 A21843-1?
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 A21843-1?
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.