Ametek Inc. · Electronic Components
300R438
Voltmeter — Test Instruments
Part Number300R438
ManufacturerAmetek Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-00-491-7821 (NSN)
Federal Item NameVOLTMETER
Federal Supply Class6625 — Test Instruments
MaterialSTEEL
Nuclear Hardness Critical FeatureNONHARDENED
Mounting Arrangement StyleTHREE HOLE/STUD BOLT CIRCLE
Installation DesignPANEL
Mounting Hole Diameter0.156 INCHES NOMINAL
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL
Overall Length2.400 INCHES NOMINAL
Indicator TypeDIAL W/POINTER
Movement TypeMOVING COIL, PERMANENT MAGNET
Accuracy In Percent-2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE
Meter Depth Behind Mounting Flange1.500 INCHES NOMINAL
Vendor Part NumbersMK777-206
Cancelled NSN6625-01-152-4113 (cancelled)
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 300R438 available?
We can source 300R438 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 300R438 by Ametek Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 300R438 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 300R438?
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 300R438?
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.