Mission Systems Davenport Inc. · Electronic Components
1557
Electronic Components Assembly
Part Number1557
ManufacturerMission Systems Davenport Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5998-00-020-0231 (NSN)
Federal Item NameELECTRONIC COMPONENTS ASSEMBLY
Federal Supply Class5998 — Circuit Card Assemblies
Actuator Position Action RelationsUP POSITION MOMENTARY AND DOWN POSITION MOMENTARY AND CENTER POSITION MAINTAINED
Body Height1.000 INCHES NOMINAL
Body Length2.437 INCHES NOMINAL
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, TWO POSITIONS MOMENTARY SINGLE SWITCH UNIT
Contact Load Current Rating At Max20.000 AMPERES RESISTIVE AC
Inclosure TypeFULLY INCLOSED
Mounting Surface To Terminal End D1.046 INCHES NOMINAL
Nominal Thread Size0.138 INCHES
Actuator StyleRECTANGULAR
Thread Series DesignatorUNF
Maximum Voltage Rating In Volts240.0 AC
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 1557 available?
We can source 1557 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 1557 by Mission Systems Davenport Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1557 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 1557?
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 1557?
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.