Jewell Instruments LLC · Electronic Components
4991-026
Meter, Electrical Frequency
Part Number4991-026
ManufacturerJewell Instruments LLC
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-01-136-4073 (NSN)
Federal Item NameMETER,ELECTRICAL FREQUENCY
Federal Supply Class6625 — Test Instruments
Mounting Stud Length0.625 INCHES MINIMUM
ColorUNABLE TO DECODE
Style DesignatorRECTANGULAR FLUSH MTG
Dielectric Withstanding Voltage In2600.0
Nuclear Hardness Critical FeatureNONHARDENED
Surface TreatmentENAMEL
Pointer ColorBLACK SINGLE INDICATOR SINGLE RANGE
Power SourceEXTERNAL
Mounting Stud Diameter0.250 INCHES NOMINAL
FSC Application DataTEST SET,ELECTRONIC EQUIPMENT
Movement Suspension MethodJEWEL PIVOT BASE
Vendor Part NumbersMK701-337A
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 4991-026 available?
We can source 4991-026 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 4991-026 by Jewell Instruments LLC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4991-026 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 4991-026?
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 4991-026?
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.