1/2″ x 3/8″ Male Reducing Flare Union Brass Fitting 42R-86

SKU: 42R-86

Condition	New
Manufacturer Part Number	42R-86

$4.36

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$4.36	0%
5–9	$4.14	5%
10+	$3.92	10%

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Specifications & product details

1/2" x 3/8" Male Reducing Flare Union – Brass Fitting – 42R-86

Product Description

The 1/2" x 3/8" Male Reducing Flare Union is a brass fitting designed to connect two different sizes of compatible flare connections. Featuring male flare ends and a hexagonal center for wrench installation, this reducing union provides a practical solution for plumbing, refrigeration, HVAC, and other compatible fluid-transfer applications.

Manufactured by Holyoke Fittings, Inc., this fitting offers a compact design suitable for maintenance, repair, and installation projects requiring a transition between 1/2-inch and 3/8-inch flare connections.

Key Features

Brass construction
1/2" x 3/8" reducing flare union
Male flare connections on both ends
Hexagonal center for convenient wrench tightening
Compact, straight union configuration
Designed to connect compatible flare fittings of different sizes
Suitable for compatible plumbing, HVAC, and refrigeration applications

Item Specifications

Product Type: Reducing Flare Union
Brand: Holyoke Fittings, Inc.
Manufacturer Part Number: 42R-86
REM Number: 5K016
Material: Brass (based on product appearance)
Connection Size: 1/2" x 3/8"
Connection Type: Male Flare x Male Flare
Fitting Shape: Straight Union
Fitting Style: Reducing Union
Color: Brass / Gold
Installation: Threaded Flare Connection
Quantity: 1 Piece
Condition: New

Package Includes

1 x 1/2" x 3/8" Male Reducing Flare Union Brass Fitting

Important Note

Please verify the connection dimensions, flare standard, and compatibility with your system before purchasing. Pressure ratings, certifications, and specific fluid compatibility have not been provided by the manufacturer in the available product information.

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

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