1/2"-28 Nuts | McMaster-Carr

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184 Products

Nuts

18-8 Stainless Steel Hex Nuts

These nuts have good chemical resistance and may be mildly magnetic.

Aluminum Hex Nuts

One-third the weight of steel, these aluminum nuts are corrosion resistant in wet environments and nonmagnetic.

18-8 Stainless Steel Thin Hex Nuts

These nuts have good chemical resistance and may be mildly magnetic.

Brass Hex Panel Nuts

Brass panel nuts are corrosion resistant in wet environments and electrically conductive.

Steel Hex Panel Nuts

These steel panel nuts are zinc plated for corrosion resistance.

Stainless Steel Hex Panel Nuts

All of these stainless steel panel nuts have some chemical resistance.

Round Coupling Nuts

A smooth rounded body provides a finished look.

Thread Adapters

Inch-to-Inch Female Hex Thread Adapters

Connect two differently sized male-threaded parts, such as threaded rods, and tighten with a standard wrench.

Inch-to-Metric Female Hex Thread Adapters

Adapt threaded rods from inch to metric. These adapters connect two male-threaded fasteners, so you can change the gender of a mating part or increase or decrease its thread size. The hex-shaped body fits into the head of a standard wrench.

Inch-to-Inch Male-Female Hex Thread Adapters

Change thread sizes or types, such as fine to coarse threads, on parts without changing gender.

Inch-to-Metric Male-Female Hex Thread Adapters

Change inch threads to metric with these adapters, or swap metric threads for inch. An external hex lets you tighten or loosen them with a wrench.

Inch-to-Inch Male Hex Thread Adapters

Need to join two female-threaded parts, such as coupling nuts, with dissimilar inch thread sizes? Attach them to these adapters and tighten the exterior hex nut for a secure connection.

Inch-to-Metric Male Hex Thread Adapters

One side inch, one side metric, and a hex in the middle—these handy fasteners connect two female-threaded parts, such as coupling nuts, adapting from inch threads to metric. Tighten with a standard wrench.