Leach International · Electronic Components
321-990
Relay, Electromagnetic
Part Number321-990
ManufacturerLeach International
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-237-3228 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Overall Length2.000 INCHES NOMINAL
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Main Contact Load Current Rating A1.0 AMPERES DC RESISTIVE LOAD
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Terminal Type And Quantity4 PIN ALL FUNCTIONS
Thread Class2A SINGLE MOUNTING FACILITY
Nonpile Up Main Contact Arrangemen1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Winding Dc Resistance Rating1.285 KILOHMS NOMINAL SINGLE WINDING
Center To Center Distance Between1.188 INCHES NOMINAL SINGLE MOUNTING FACILITY
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY
Overall Height2.750 INCHES NOMINAL
Vendor Part NumbersD0108
For Use WithFiberglass Antenna
ProducttraceabilityNo
RohscompliantYES
Product Range-
IscanonicalY
Hazardousfalse
RohsphthalatescompliantYES
UseccnUnknown
Rohs CompliantYes
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 321-990 available?
We can source 321-990 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 321-990 by Leach International obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 321-990 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 321-990?
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 321-990?
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.