Thread Adapters, Reducers & Enlargers | Complete Selection Guide

Find the Perfect Thread Adapter Solution

We stock precision-engineered fittings from Sealcon and Mencom that solve all your threaded conversion needs with three specialized options: Adapters connecting different thread types together, Reducers convert to smaller sizes of the same thread type, and Enlargers expand to larger sizes while maintaining thread compatibility. Available in durable materials for any industrial or commercial application.

Thread Adapter Selector

Find the right adapter for your application by selecting your criteria below:

All Products (6 products)

Nylon Plastic Thread Adapters

View All Nylon Adapters

Our durable black nylon plastic adapters are available in Metric, NPT, and PG thread sizes. Perfect for most standard applications where chemical resistance is not required.

Nickel Plated Brass Thread Adapters

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Our premium nickel plated brass adapters offer superior durability and are ideal for environments where greater strength and temperature resistance is required.

Thread Type Guide

Understanding thread types is essential to selecting the right adapter. Here's a quick reference guide:

Thread System Common Sizes Typical Applications Identification
Metric (M) M12, M16, M20, M25, M32, M40, M50, M63 European equipment, international standards Labeled with "M" followed by diameter (mm)
NPT 1/8", 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" North American equipment, fluid/gas systems Tapered threads, sizes in inches
PG PG 7, PG 9, PG 11, PG 13.5, PG 16, PG 21, PG 29, PG 36, PG 42, PG 48 European electrical applications Labeled with "PG" followed by approx. diameter (mm)

Helpful Resources

Learn more about thread adapters and how to select the right solution for your application.

Thread Identification Guide

Learn how to identify different thread types and measure them correctly.

Download Guide

Adapter Selection Flowchart

Step-by-step process to determine the right adapter for your application.

View Flowchart

Technical Support

Need help selecting the right adapter? Our experts are ready to assist.

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High-Quality Materials

Choose from durable nylon plastic, nickel-plated brass, or stainless steel to match your application requirements.

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Multiple Thread Types

Convert between Metric, NPT, and PG thread types with our comprehensive adapter selection.

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Precise Sizing

Each adapter is precision manufactured to ensure proper fit and sealing performance.