Graybar Electric Company, Inc. · Electronic Components
5728
Pin, Insulator
Part Number5728
ManufacturerGraybar Electric Company, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5975-00-782-1118 (NSN)
Federal Item NamePIN,INSULATOR
Federal Supply Class5975 — Electrical Hardware and Supplies
Shank Diameter0.750 INCHES NOMINAL
Design TypeBOLT
Insulator Mounting Thread Diameter1.375 IN.
Below Base Length7.000 INCHES NOMINAL
Above Base Length8.000 INCHES NOMINAL
MaterialSTEEL OVERALL
Surface TreatmentZINC OVERALL
Connection Type And Voltage Rating208.0 LINE TO NEUTRAL SINGLE INPUT
Frequency In Hertz50.0 OR 60.0 INPUT
PhaseTHREE INPUT
Overall Length12.375 INCHES
Nominal Center To Center Distance5.000 INCHES
Overall Height8.250 INCHES
Overall Width7.750 INCHES
Mounting MethodFIXED BASE
Vendor Part Numbers18W4-114
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 5728 available?
We can source 5728 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 5728 by Graybar Electric Company, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 5728 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 5728?
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 5728?
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.