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209856 - Miller Steel Tube End Reducer Adapter 1/4 F x 5/16 M

Packaging: 1 PER EA
$189.78/EA $133.18/1 PER EA only $133.18/EASave 30%

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OVERVIEW

Miller 209856 Steel Adapter Tube End Reducer

Maintain the integrity of your welding equipment's fluid and gas delivery systems with the Miller 209856 Fitting. This Steel Adapter Tube End Reducer is an essential component for technicians and welders performing maintenance on Miller power sources. Precision-engineered to meet strict manufacturing tolerances, this fitting ensures a tight, secure seal that prevents leaks which could otherwise compromise weld quality or machine safety.

The adapter functions as a reducer, connecting a 04F (Female) interface to a 05M (Male) interface. In standard dash sizing, this typically corresponds to adapting a 1/4-inch line to a 5/16-inch connection point. The steel construction offers superior strength compared to brass or plastic alternatives, making it suitable for higher pressure applications or areas subject to vibration and mechanical stress common in heavy-duty welding operations.

When replacing internal components, verifying the correct part number is crucial. The Miller 209856 is specified for particular models where this specific size transition is required. By choosing genuine Miller parts, you ensure that the flow characteristics—whether for coolant or shielding gas—remain consistent with the machine's original design specifications. This attention to detail in maintenance supports consistent arc stability and equipment cooling.

Technical Specifications

  • Part Number: 209856
  • Material: Steel
  • Configuration: Adapter / Reducer
  • Sizes: 04F x 05M
Additional Information
Brand:Miller
Packaging Description:1-per-ea
Product Type:Adapter Fitting, Tube End Reducer
Material:Steel
Connection Size 1:04F (1/4 inch Female)
Connection Size 2:05M (5/16 inch Male)
Part Number:209856

INCLUDED

  • 1 x Miller 209856 Steel Adapter Tube End Reducer

APPLICATIONS

  • Repairing internal gas lines in Miller welders
  • Connecting coolant hoses of different diameters
  • General maintenance of Miller industrial power sources
  • Hydraulic or pneumatic system adaptation

FAQ

This fitting is made of steel, providing durability and strength for industrial applications.

The fitting adapts a size 04 Female (04F) connection to a size 05 Male (05M) connection.

Yes, the Miller 209856 is a genuine OEM replacement part manufactured by Miller Electric.

These are likely dash sizes where -04 represents 4/16" (1/4") and -05 represents 5/16". F stands for Female and M stands for Male.

If your machine specifies this part number for the cooling system, yes. Steel fittings are often used in various fluid and gas lines within welding machines.

This item is sold individually (1 per each).

It depends on the specific sealing mechanism (e.g., NPT vs. flared). However, for many steel adapters, appropriate thread sealant or tape is recommended unless it is a compression or O-ring face seal type.

You should check your welder's parts manual or look up the serial number on the Miller website to confirm compatibility with part number 209856.
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