Carbon/Graphite Group Inc. The · Electronic Components
A1633-4
Brush, Electrical Contact
Part NumberA1633-4
ManufacturerCarbon/Graphite Group Inc. The
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-00-245-2063 (NSN)
Federal Item NameBRUSH,ELECTRICAL CONTACT
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Contact Face StyleCONCAVE
Top StyleFLAT WITH RECTANGULAR SLOT
Shunt Insulation Provision And Qua1 INSULATED
MaterialELECTROGRAPHITIC
Outer Edge To Slot Edge Distance0.156 INCHES NOMINAL
Width0.625 INCHES NOMINAL
Terminal Type And Quantity1 STRAIGHT W/HOLE
Material Document And ClassificatiSPEER CARBON CO,GR E-25 MFR REF SINGLE MATERIAL RESPONSE
Slot Depth0.062 INCHES NOMINAL
Length0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM
Thickness0.402 INCHES MINIMUM AND 0.406 INCHES MAXIMUM
Cancelled NSN5977-00-625-4463 (cancelled)
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 A1633-4 available?
We can source A1633-4 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 A1633-4 by Carbon/Graphite Group Inc. The obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A1633-4 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 A1633-4?
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 A1633-4?
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.