Product Overview
Panel-Mount Threaded to Bayonet RF Coax Feedthrough Connector
Condition
Unused new old stock (NOS). Component body is clean with bright metallic plating, intact hex flange, and clean gold-plated center pin. Includes the opened clear bag and printed manufacturer insert marked MALCO A Microdot Co., FMSC 98278, DATE CODE 8303, MICRODOT PART NO. 057-0551-0001.
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Product Overview
Engineered for high-frequency instrumentation and test fixtures, the Malco Microdot 057-0551-0001 is a specialized between-series coaxial RF bulkhead adapter. It provides a secure panel-mount feedthrough connecting an external male threaded coaxial interface to an opposing coaxial bayonet jack across equipment enclosures.
Key Features
- Between-series coaxial RF bulkhead feedthrough design
- Interface 1: External male threaded coaxial port with gold-plated center male pin
- Interface 2: Coaxial bayonet jack with recessed socket contact
- Mounting: Single-hole bulkhead panel mount with integral hex flange
- Insulation: Solid white PTFE dielectric
- Manufacturer CAGE / FMSC: 98278
- Manufacturer Part Number: 057-0551-0001
Applications
- Routing RF feedthrough signals through chassis walls, shielded enclosures, and test boxes
- Connecting legacy aerospace and laboratory gear using Microdot interfaces to bayonet coaxial cables
- Benchtop RF prototyping, ham radio assemblies, and custom signal pass-through panels
Frequently Asked Questions
What are the mating interfaces on each side of this adapter?
One end features an external male threaded coaxial barrel with a central male pin, while the opposing end is a coaxial bayonet-style female jack designed to receive a bayonet plug.
Does this feedthrough include mounting hardware?
The adapter features an integrated machined hex flange for panel mounting. Additional lockwashers or panel nuts beyond the unit shown are not included.
What type of panel installation does this adapter support?
It installs into a standard single-hole bulkhead panel cutout, providing an isolated coaxial signal path through chassis walls while establishing firm mechanical seating via its hex shoulder.
Finding the exact vintage Microdot adapter means not having to hack together three modern pigtails just to hook up a classic instrument. Thread it into the bulkhead, lock the bayonet, and keep your bench running.
