ST Bare Adapter - Bare Adapter manufactured by Ever Expresslink Limited

ST Bare Adapter (Ref 429)

Name: ST Bare Adapter (Ref 429)
Brand: Ever Expresslink
SKU: st-bare-adapter-429

Bare Adapter

ST Bare Adapter (Ref 429) is part of the bare adapter range built by Ever Expresslink Limited in Ningbo, China. It is built on the ST (Straight Tip) interface.

Temporary connections to unterminated fiber for test and splice verification

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Product Overview

ST Bare Adapter (Ref 429) is part of the bare adapter range built by Ever Expresslink Limited in Ningbo, China. It is built on the ST (Straight Tip) interface.

It remains common in installed multimode building backbones and in industrial or campus networks that were cabled before SC and LC took over. The bayonet pin has to clear the slot fully. A partially rotated ST looks seated but sits off the reference plane and reads high loss.

It is one of 7 items in this range. A typical application is fault localisation during a restoration. What the range is built to give you there: available for the main connector port types and both ferrule sizes.

The problem it addresses is slow fault-finding on a partly built link. A practical note that applies across this range: cleave the fiber square with a precision cleaver before insertion. Specifications for a particular configuration are confirmed on the quotation rather than assumed from the designation.

Key Benefits

Supplied as ST Bare Adapter (Ref 429), so the part you receive matches the designation you ordered against
Available for the main connector port types and both ferrule sizes
Compact enough to live in a splicing kit
Square and standard body versions for different panel and bench mounts
Measure without spending a connector and a termination cycle

Problems It Solves

Damaged fiber from improvised clamping methods
Test kits that cannot reach bare fiber in a splice tray
Needing a measurement on fiber that has not been terminated yet
Terminating a fiber purely to verify continuity, then cutting the connector off

Application Scenarios

Security and process-control fiber
Fault localisation during a restoration
Fiber training and practical assessment
Continuity checking before a splice closure is sealed
Power measurement on an unterminated distribution cable

Who It Is For

Test engineers measuring unterminated cable
Laboratories characterizing fiber samples
Training programs teaching splice verification
Maintenance teams fault-finding on a partly built link

Technical Features

ST (Straight Tip) interface
The bayonet pin has to clear the slot fully. A partially rotated ST looks seated but sits off the reference plane and reads high loss.
Reusable clamp designed for repeated insertion
Available for SC, FC, ST and LC port types
Square-body versions for panel mounting
Clamping mechanism sized for 250 µm or 900 µm fiber

Materials

Zirconia ceramic or precision metal guide
Metal or thermoplastic body
Spring clamping mechanism
Thermoplastic dust cap

Specifications

Product Designation	ST bare adapter
Product Family	Bare Adapter
Connector Interface	ST (Straight Tip)
Manufactured In	Ningbo, China
Warranty	One year against defects in materials and workmanship

Values shown are those carried by the product designation. Dimensional and optical values for a specific order are confirmed on the quotation.

Manufacturing Process

Guide bore inspection
Clamp mechanism assembly and force setting
Mating interface verification
Repeat-insertion durability sampling
Cleaning and packing

Quality Control

Guide bore concentricity sampled per lot
Clamping force verified on sample units
Repeat-insertion cycling on samples
Loss repeatability measured with a reference fiber
Visual inspection of the mating interface

Customization Options

Connector interface type
250 µm or 900 µm fiber acceptance
Square or standard body
Kitted with cleaver and cleaning consumables

Compared With Other Options

SC	SC pushes straight in; ST needs a twist but is quick once the technique is habitual
FC	Both use a 2.5 mm ferrule; FC screws down for vibration, ST trades that for speed

Use Guide

Handling ST Bare Adapter (Ref 429)

Before You Order

Cleave the fiber square with a precision cleaver before insertion
Clean the fiber with lint-free wipe and solvent
Insert to the stop and close the clamp without forcing it

In Service

Treat the reading as indicative rather than as a certified link measurement
Release the clamp before withdrawing the fiber to avoid scoring it
Clean the guide bore between fibres

FAQ

Questions About ST Bare Adapter (Ref 429)

What do you need from us to quote ST Bare Adapter (Ref 429)?

The quantity, the destination and anything that has to match on your side: connector and polish at each end, fiber mode and core size, and length where the item is an assembly. If you are matching a part you already buy, send the sample and we will quote against it.

Can ST Bare Adapter (Ref 429) be supplied with a different connector interface?

Yes. ST (Straight Tip) is what this designation carries, and the same family is stocked across the other mainstream connector standards. Tell us the port you have to mate with and we will confirm the equivalent part.

Do I still need to cleave the fiber?

Yes. The adapter aligns the fiber but cannot fix a bad cleave. A square, clean cleave is what makes the reading meaningful.

What fiber sizes does a bare adapter accept?

Versions are available for 250 µm coated fiber and for 900 µm tight-buffered fiber. Confirm which one your splice tray presents before ordering.

Is a bare adapter measurement as accurate as a terminated one?

It is repeatable enough for continuity and relative loss checks, which is what a splicing crew needs. For certified link measurements, terminate properly or use a reference-grade test cord.