Seastrom Manufacturing Co Inc. · Electronic Components
5210-31
Insulator, Plate
Part Number5210-31
ManufacturerSeastrom Manufacturing Co Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5970-01-180-5966 (NSN)
Federal Item NameINSULATOR,PLATE
Federal Supply Class5970 — Electrical Insulators
First Hole Spacing0.271 INCHES NOMINAL
Third Hole Spacing1.172 INCHES MINIMUM AND 1.202 INCHES MAXIMUM
Fourth Hole Spacing0.430 INCHES NOMINAL
MaterialPLASTIC OVERALL
Style DesignatorFLAT, DIAMOND
Overall Length1.715 INCHES MINIMUM AND 1.741 INCHES MAXIMUM
Second Hole Diameter0.375 INCHES NOMINAL
Overall Width1.235 INCHES MINIMUM AND 1.265 INCHES MAXIMUM
Overall Height0.002 INCHES NOMINAL
First Hole Diameter0.142 INCHES NOMINAL
Vendor Part Numbers54949-9
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 5210-31 available?
We can source 5210-31 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 5210-31 by Seastrom Manufacturing Co Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 5210-31 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 5210-31?
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 5210-31?
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.