Kearfott · Electronic Components
R587-1A
Resolver, Electrical
Part NumberR587-1A
ManufacturerKearfott
AvailabilityAvailable to order — request a quote
Specifications
NSN5990-00-503-2911 (NSN)
Federal Item NameRESOLVER,ELECTRICAL
Federal Supply Class5990 — Synchros and Resolvers
Length0.1320 INCHES NOMINAL SHOULDER
Shoulder Diameter1.3115 INCHES MINIMUM AND 1.3120 INCHES MAXIMUM
Flange Diameter1.4420 INCHES MAXIMUM
Flange Thickness0.0930 INCHES NOMINAL
Overall Length2.4280 INCHES NOMINAL
Pilot Diameter0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM
Body StyleSTANDARD ROUND B
Undercut Width0.0780 INCHES NOMINAL
Frequency In Hertz400.0 NOMINAL
Zro Resistance In Ohms120.00 NOMINAL
Shaft Slot Depth0.0600 INCHES NOMINAL SINGLE SHAFT
Vendor Part NumbersVRH15-4L8
Cancelled NSN5990-00-716-7801 (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 R587-1A available?
We can source R587-1A 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 R587-1A by Kearfott obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If R587-1A 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 R587-1A?
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 R587-1A?
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.