Unistrut International Corporation · Electronic Components
P1790A
Insulator, Bushing
Part NumberP1790A
ManufacturerUnistrut International Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5970-01-539-5287 (NSN)
Federal Item NameINSULATOR,BUSHING
Federal Supply Class5970 — Electrical Insulators
Outside Diameter4.000 INCHES NOMINAL
Inside Diameter1.875 INCHES NOMINAL
Shank Outside Diameter3.750 INCHES NOMINAL
Overall Height2.125 INCHES NOMINAL
Shank Length1.625 INCHES NOMINAL
MaterialPORCELAIN OVERALL
Flange Thickness0.250 INCHES NOMINAL
Style DesignatorSPOOL
Vendor Part NumbersSM-A-949388-90
ESD/EMICode A — ESD/EMI sensitive item
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 P1790A available?
We can source P1790A 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 P1790A by Unistrut International Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If P1790A 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 P1790A?
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 P1790A?
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.