GE Aviation Systems · Electronic Components
BYLM12-1
Holder, Electrical Contact Brush
Part NumberBYLM12-1
ManufacturerGE Aviation Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN5977-00-621-8553 (NSN)
Federal Item NameHOLDER,ELECTRICAL CONTACT BRUSH
Federal Supply Class5977 — Electrical Contact Brushes and Electrodes
Inside Length0.435 INCHES NOMINAL
Overall Length0.435 INCHES NOMINAL
Inside Width0.187 INCHES NOMINAL
Brush Pressure Spring Type AccommoFLAT FINGER
Overall Thickness0.375 INCHES NOMINAL
Thread Size And Series Type Design0.375-24 UNF
Inside Thickness0.187 INCHES NOMINAL
Brush Spring AdjustabilityNONADJUSTABLE
Overall Width0.438 INCHES NOMINAL
Thread Length0.273 INCHES NOMINAL
Top Thread LocationEXTERNAL
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 BYLM12-1 available?
We can source BYLM12-1 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 BYLM12-1 by GE Aviation Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If BYLM12-1 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 BYLM12-1?
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 BYLM12-1?
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.