Skil Corp. · Electronic Components
4387
Brush, Electrical Contact
Part Number4387
ManufacturerSkil Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-00-447-8292 (NSN)
Federal Item NameBRUSH,ELECTRICAL CONTACT
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Top StyleCYLINDRICAL HEAD
Width0.750 INCHES NOMINAL
Length0.875 INCHES NOMINAL
Radius0.937 INCHES NOMINAL
Style DesignatorONE PIECE
MaterialELECTROGRAPHITIC
Spring Free Length2.300 INCHES NOMINAL
Contact Face StyleCONCAVE
Pressure Spring Type And Quantity1 CYLINDRICAL
Largest Outside Diameter0.500 INCHES NOMINAL
Material Document And ClassificatiUNITED STATES GRAPHITE CO,GR 235 MFR REF SINGLE MATERIAL RESPONSE
Cancelled NSN5130-00-073-6471 (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 4387 available?
We can source 4387 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 4387 by Skil Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4387 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 4387?
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 4387?
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.