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.

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.

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.

A black-phosphate finish provides mild corrosion resistance.

A distorted thread grips the screw to resist loosening.

Made of Nitronic 60 stainless steel, these inserts prevent the screw from binding or sticking without any coating or lubricant that could contaminate particle-free environments.

A dry film keeps the screw from sticking or binding in these inserts during installation.

Made of Nitronic 60 stainless steel, these inserts prevent the screw from binding or sticking without any coating or lubricant that could contaminate particle-free environments.

These inserts have a high strength-to-weight ratio and resist acids and salt water better than nickel alloy and stainless steel inserts.

Assortments include various sizes of helical inserts and a tap, a drill bit, and an installation tool for each thread size.

A dry film keeps the screw from sticking or binding in these inserts during installation.

Made of 18-8 stainless steel, these inserts have good corrosion resistance.

The strongest key-locking inserts we offer, these inserts are made to stringent military specifications.

Forming the strongest hold of any of our threaded inserts, these inserts have a distorted internal thread to lock screws into place and keys that drive into surrounding material to prevent slipping and rotating.

The knurled body holds these inserts in place in aluminum and other soft metals. Use an arbor press to install them in untapped holes.

Assortments include various sizes of inserts, a soldering iron, a ceramic insulation tube, and installation tips.

Also known as Trisert inserts, these cut threads into plastic and have better holding power than press-fit inserts.

These aluminum inserts are 70% lighter than brass inserts, electrically conductive, and nonmagnetic. They have good corrosion resistance, which is comparable to brass but not as good as stainless steel.

These 18-8 stainless steel inserts have better corrosion resistance than brass inserts and may be mildly magnetic.

Made from brass, these inserts are nonmagnetic, corrosion resistant, and electrically conductive.

The barbed sides keep these securely in place even before a screw is installed.

70% lighter than stainless steel, these aluminum inserts are mildly corrosion resistant and nonmagnetic.

These 18-8 stainless steel inserts have excellent resistance to chemicals and may be mildly magnetic.

The most corrosion resistant tee nut inserts we offer, these inserts stand up to chemicals and salt water.

Fewer prongs than other tee nut inserts reduce the risk of splitting hardwood—these inserts have three short prongs.

These aluminum rivet nuts are one-third the weight of steel rivet nuts and have mild corrosion resistance.

The most corrosion resistant low-profile rivet nuts we offer, these stand up to chemicals.

These aluminum rivet nuts are one-third the weight of steel rivet nuts and have mild corrosion resistance.

A nonconductive rubber coating insulates the nut from electricity, seals out moisture, and damps vibration.

These rivet nuts are mildly corrosion resistant.

These rivet nuts have a smooth body and fit in smaller holes than twist-resistant rivet nuts. Assortments include rivet nuts, mandrels, nosepieces, and a plier-style installation tool.