MIL-SPEC · Electronic Components
MR4SW400SYH
Indicator, Synchronization
Part NumberMR4SW400SYH
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-01-178-4020 (NSN)
Federal Item NameINDICATOR,SYNCHRONIZATION
Federal Supply Class6625 — Test Instruments
Width4.422 INCHES NOMINAL
Mounting Stud Length0.625 INCHES NOMINAL
Electrical Connection Quantity4
Center To Center Distance Between3.376 INCHES NOMINAL
Scale Marking TransparencyNONLUMINOUS
Test Data Document81349-MIL-S-16104 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Scale MarkingLETTERS
FSC Application DataTEST SET,ELECT. EQUIP.
Frequency Rating400.0 HERTZ NOMINAL
Mounting Arrangement StyleFOUR HOLE/STUD RECTANGULAR/SQUARE
Length6.957 INCHES NOMINAL
Cancelled NSN6625-01-085-3183 (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 MR4SW400SYH available?
We can source MR4SW400SYH 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 MR4SW400SYH by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MR4SW400SYH 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 MR4SW400SYH?
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 MR4SW400SYH?
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.