Keystone Electronics · Electronic Components
403
SPACER #4 SCREW .625"L ALUM
Part Number403
ManufacturerKeystone Electronics
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-103-4943 (NSN)
Federal Item NameRELAY,HYBRID
Federal Supply Class5945 — Relays and Solenoids
Overall Diameter0.375 INCHES NOMINAL
Thread Series DesignatorUNEF
MaterialCOPPER ALLOY BODY
Finger Accommodation Length0.562 INCHES NOMINAL SINGLE FINGER
Thread Class2A
Body Length0.625 INCHES NOMINAL
Thread DirectionRIGHT-HAND
Nominal Thread Size0.250 INCHES
Body StyleTHREADED BUSHING MOUNTED
Mounting Bushing Length0.531 INCHES NOMINAL
Overall Length0.625 INCHES NOMINAL
Cancelled NSN5935-00-236-4676 (cancelled)
ESD/EMICode A — ESD/EMI sensitive item
Electrical Insulation FeatureUNINSULATED
Mounting Facility Type And Quantit1 THREADED STUD(S)
Finger Diameter0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM SINGLE FINGER
Surface TreatmentNICKEL FINGER
Current Rating In Amps15.0
Mounting Tongue Width0.250 INCHES
Angle90.0 DEGREES
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 403 available?
We can source 403 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 403 by Keystone Electronics obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 403 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 403?
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 403?
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.