Horizon Aerospace · Electronic Components
21-1166
Insulator, Bushing
Part Number21-1166
ManufacturerHorizon Aerospace
AvailabilityAvailable to order — request a quote
Specifications
NSN5970-00-305-5455 (NSN)
Federal Item NameINSULATOR,BUSHING
Federal Supply Class5970 — Electrical Insulators
Overall Height0.229 INCHES NOMINAL
Countersink Major Diameter0.063 INCHES MINIMUM AND 0.065 INCHES MAXIMUM
Countersink Angle In Deg90.0
Style DesignatorCYLINDRICAL
MaterialOVERALL POLYAMIDE NYLON,FM10001,LEWIS ENGINEERING CO
Inside Diameter0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM
Outside Diameter0.078 INCHES MINIMUM AND 0.082 INCHES MAXIMUM
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 21-1166 available?
We can source 21-1166 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 21-1166 by Horizon Aerospace obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21-1166 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 21-1166?
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 21-1166?
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.