Northrop Grumman Systems · Electronic Components
221B971-1-1
Coil, Radio Frequency
Part Number221B971-1-1
ManufacturerNorthrop Grumman Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-677-1360 (NSN)
Federal Item NameCOIL,RADIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Turn Quantity275 SINGLE COMPONENT SINGLE WINDING
Nominal Thread Size0.164 INCHES SINGLE GROUP
Distance Between Mounting Facility0.372 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Dc Resistance Rating In Ohms2.900 SINGLE COMPONENT SINGLE WINDING
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Mounting Facility Quantity2 SINGLE GROUP
Coil Form TypeSOLID SINGLE COMPONENT
Thread Quantity Per Inch32 SINGLE GROUP
Body Length5.312 INCHES NOMINAL
Reliability IndicatorNOT ESTABLISHED
Rating MethodELECTRICAL AND WINDING TURNS SINGLE COMPONENT SINGLE WINDING
Vendor Part Numbers221B972G01
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 221B971-1-1 available?
We can source 221B971-1-1 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 221B971-1-1 by Northrop Grumman Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 221B971-1-1 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 221B971-1-1?
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 221B971-1-1?
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.