Illinois Tool Works · Electronic Components
18-40221
Switch, Sensitive
Part Number18-40221
ManufacturerIllinois Tool Works
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-716-5276 (NSN)
Federal Item NameSWITCH,SENSITIVE
Federal Supply Class5930 — Switches
Body Height0.350 INCHES NOMINAL
Body Width0.200 INCHES NOMINAL
Maximum Voltage Rating In Volts250.0 AC AND 28.0 DC
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, DOUBLE BREAK, MOMENTARY ACTION SINGLE SWITCH UNIT
Actuator Diameter0.093 INCHES NOMINAL
Actuator StyleROUND
Unthreaded Mounting Hole Diameter0.088 INCHES NOMINAL
Actuator Movement0.035 PRETRAVEL INCHES MAXIMUM AND 0.006 OVERTRAVEL INCHES MINIMUM AND 0.015 DIFFERENTIAL INCHES NOMINAL
Contact Load Current Rating At Max8.000 AMPERES RESISTIVE DC AND 5.000 AMPERES INDUCTIVE DC AND 8.000 AMPERES RESISTIVE AC AND 5.000 AMPERES INDUCTIVE AC
Switch Release Force1.5 OUNCES MINIMUM
MaterialPLASTIC CASE
ProducttraceabilityNo
RohscompliantTBA
IscanonicalY
Hazardousfalse
RohsphthalatescompliantTBA
UseccnEAR99
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 18-40221 available?
We can source 18-40221 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 18-40221 by Illinois Tool Works obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 18-40221 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 18-40221?
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 18-40221?
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.