Grimes Aerospace · Electronic Components
A8399-1
Brush, Electrical Contact
Part NumberA8399-1
ManufacturerGrimes Aerospace
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-00-556-9095 (NSN)
Federal Item NameBRUSH,ELECTRICAL CONTACT
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Material Document And ClassificatiHELWIG CARBON GRADE 673 MFR REF SINGLE MATERIAL RESPONSE
MaterialMETAL GRAPHITE
Thickness0.156 INCHES NOMINAL
Width0.250 INCHES NOMINAL
Length0.500 INCHES NOMINAL
Top StyleFLAT WITH LEFT EDGE BEVELED
Brush Shunt Length2.000 INCHES NOMINAL SINGLE SHUNT
Contact Face StyleCONCAVE
Shunt Insulation Provision And Qua1 UNINSULATED
Body StyleRECTANGULAR COMMUTATOR
Shunt Position Designator2
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 A8399-1 available?
We can source A8399-1 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 A8399-1 by Grimes Aerospace obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A8399-1 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 A8399-1?
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 A8399-1?
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.