EIKO · Electronic Components
257
#257 LAMP G-4 1/2 14V 270MA MINIATURE BAYONET BASE
Part Number257
ManufacturerEIKO
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-00-043-2332 (NSN)
Federal Item NameJACK,TELEPHONE
Federal Supply Class5935 — Connectors, Electrical
Body StyleTHREADED BUSHING MOUNTED
Overall Diameter0.594 INCHES NOMINAL
Overall Length1.281 INCHES NOMINAL
MaterialCOPPER ALLOY BODY
Mounting Bushing Length0.281 INCHES NOMINAL
Finger Accommodation Length1.188 INCHES NOMINAL SINGLE FINGER
Jack Contact Arrangement DesignatoJ1
Bushing Accommodation Hole ShapeROUND
Finger Accommodation Diameter0.250 INCHES NOMINAL SINGLE FINGER
Mounting Facility Type And Quantit1 BUSHING
Accommodated Finger TypeTWO CONDUCTOR, TURRET TIP SINGLE FINGER
Vendor Part Numbers320AS169-6
Body Width4.688 INCHES NOMINAL
Style DesignatorSQUARE-TWO GANG BOX
Entrance Quantity17
Cover Mounting Hole Quantity4
Inside Depth2.125 INCHES NOMINAL
Body Length4.688 INCHES NOMINAL
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 257 available?
We can source 257 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 257 by EIKO obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 257 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 257?
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 257?
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.