HEX NUTS – ISO 4032

A Hex Nuts is a crucial type of fastener with a threaded hole, designed to be paired with a mating bolt or screw. Together, they form a strong connection to fasten multiple parts securely. Among the various types of nuts, hex nuts are one of the most common and widely used. These six-sided fasteners work seamlessly with anchors, bolts, screws, studs, threaded rods, and any other fastener that features machine screw threads.

The term “hex” comes from the six-sided shape of the nut, making it easy to tighten or loosen using a wrench or spanner. Hex nuts are sometimes referred to as:

• Finished hex nuts

• Hex full nuts

Thread Specifications: Precision and Compatibility

Hex nuts are typically available in two common thread standards:

• Unified Inch Coarse (UNC)

• Unified Inch Fine (UNF)

In addition to these, metric threads are also available, catering to international standards. For more specialized applications, right-hand and left-hand threaded hex nuts can be manufactured to meet specific needs.

At National Fasteners, we manufacture hex nuts in a wide range of sizes, including:

• M12 to M72 (metric sizes)

• 1/2” to 3” (imperial sizes)

Ensuring Proper Fit: Thread Engagement

To ensure optimal performance, it’s crucial that bolts and screws used with hex nuts are long enough to achieve full thread engagement. Ideally, the bolt should extend at least two full threads beyond the nut face after tightening. Conversely, the nut face should also expose at least two full threads when fully tightened, ensuring the fastener can be securely locked in place.