Horizon Aerospace · Electronic Components
27S28B4
Switch, Rotary
Part Number27S28B4
ManufacturerHorizon Aerospace
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-569-8655 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Hazardous Locations EnvironmentalDUSTPROOF
Overall Width4.550 INCHES NOMINAL
Mounting Facility Circle Radius2.375 INCHES NOMINAL SINGLE MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.169 INCHES NOMINAL SINGLE MOUNTING FACILITY
Overall Height4.550 INCHES NOMINAL
Switch Actuator Indexing Position29 SINGLE ACTUATOR
Contact Switching ActionMAKES BEFORE BREAKS SINGLE SECTION FRONT
Mounting Facility PatternFOUR POSITION CIRCULAR SINGLE MOUNTING FACILITY
Throw Quantity28 SINGLE SECTION FRONT
Individual Section Quantity1
Features ProvidedACTUATOR KNOB AND METALLIC ENCLOSURE
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 27S28B4 available?
We can source 27S28B4 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 27S28B4 by Horizon Aerospace obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 27S28B4 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 27S28B4?
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 27S28B4?
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.