Northrop Grumman Systems · Electronic Components
1664C12H01
Locknut, Electrical Conduit
Part Number1664C12H01
ManufacturerNorthrop Grumman Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN5975-01-253-6061 (NSN)
Federal Item NameLOCKNUT,ELECTRICAL CONDUIT
Federal Supply Class5975 — Electrical Hardware and Supplies
MaterialSTEEL CORROSION RESISTING
Thread TypeSTRAIGHT
Overall Thickness1.245 INCHES MINIMUM AND 1.317 INCHES MAXIMUM
Width Across Flats2.175 INCHES MINIMUM AND 2.250 INCHES MAXIMUM
Thread Size1 1/2-12
Conduit Size Accommodated1.500 INCHES NOMINAL
Drive TypeHEXAGON
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 1664C12H01 available?
We can source 1664C12H01 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 1664C12H01 by Northrop Grumman Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1664C12H01 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 1664C12H01?
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 1664C12H01?
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.