Hamilton Sundstrand · Electronic Components
81521-1
Reactor — Coils and Transformers
Part Number81521-1
ManufacturerHamilton Sundstrand
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-01-074-1056 (NSN)
Federal Item NameREACTOR
Federal Supply Class5950 — Coils and Transformers
Turn Quantity29 SINGLE COMPONENT SINGLE WINDING
Terminal Type And Quantity3 WIRE LEAD
Winding Conductor Size0.04526 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING
Reliability IndicatorNOT ESTABLISHED
Body Outside Diameter1.640 INCHES NOMINAL
Inclosure TypeFULLY INCLOSED
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Winding Quantity2 SINGLE COMPONENT
Body Length0.803 INCHES NOMINAL
Nominal Thread Size0.112 INCHES SINGLE GROUP
Maximum Operating Temp145.0 CELSIUS
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 81521-1 available?
We can source 81521-1 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 81521-1 by Hamilton Sundstrand obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 81521-1 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 81521-1?
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 81521-1?
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.