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Northrop Grumman Systems Corporation  · Electronic Components

305D291H03

Insulator, Bushing

Part Number305D291H03
ManufacturerNorthrop Grumman Systems Corporation
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameINSULATOR,BUSHING
Federal Supply Class5970 — Electrical Insulators
Style DesignatorCYLINDRICAL
Material TypeNATURAL AND UNBLEACHED AND SULFATE PAPER WOOD PULP PAPER COMPOSITION ONE
Material FormCLOTH OVERALL
End ConfigurationBOTH ENDS SQUARED
MaterialGLASS-CERAMIC OR MICA OR COTTON OR CERAMIC OR SILK OR FIBERGLASS OR GLASS OR PLASTIC POLYVINYL CHLORIDE (PVC) OR
Inside Diameter0.154 INCHES MINIMUM AND 0.164 INCHES MAXIMUM
Overall Height0.405 INCHES MINIMUM AND 0.415 INCHES MAXIMUM
Outside Diameter0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM
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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

Frequently asked

Is 305D291H03 available?
We can source 305D291H03 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 305D291H03 by Northrop Grumman Systems Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 305D291H03 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 305D291H03?
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 305D291H03?
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.