Raco, A · Electronic Components
778
Cover, Junction Box
Part Number778
ManufacturerRaco, A
AvailabilityAvailable to order — request a quote
Specifications
NSN5975-00-188-1158 (NSN)
Federal Item NameCOVER,JUNCTION BOX
Federal Supply Class5975 — Electrical Hardware and Supplies
Cover Opening Shape And Quantity1 RECTANGULAR
MaterialSTEEL COVER
First Center To Center Distance Be3.312 INCHES NOMINAL
Cover Mounting Hole Quantity4
Cover TypeRAISED
Mounting Hole Diameter0.312 INCHES NOMINAL
Distance From Center Of Mounting H0.344 INCHES NOMINAL
Overall Height0.500 INCHES NOMINAL
Overall Length4.000 INCHES NOMINAL
Second Center To Center Distance B3.312 INCHES NOMINAL
Overall Width4.000 INCHES NOMINAL
Round Conductor Size18 AWG ALL CONDUCTORS
Material Document And ClassificatiMIL-I-3930,TYPE IS MIL SPEC SINGLE MATERIAL RESPONSE FIRST POSITION PRIMARY INSULATION ALL CONDUCTORS
Conductor Arrangement And Quantity2 SINGLES
Strand Awg Size Per Conductor30 ALL CONDUCTORS
Termination TypeCONNECTOR PLUG FIRST END ALL CONDUCTORS
Strand Quantity Per Conductor16 ALL CONDUCTORS
Conductor FormSTRANDED ALL CONDUCTORS
Accessory Wire Type And Quantity1 GROUND
Voltage Rating300.0 AC MAXIMUM RATED WORKING VOLTAGE ALL CONDUCTORS
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 778 available?
We can source 778 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 778 by Raco, A obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 778 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 778?
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 778?
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.