Description

When you’re dealing with heavy equipment and big bolts, you need nuts that can handle the job. This 1-3/8 inch hex nut is what you reach for when you’re working on larger structural connections, PTO assemblies, or any heavy-duty application where a regular hardware store nut just won’t cut it. The zinc plating keeps rust at bay, so it’ll look good and thread smoothly even after sitting outside through a few seasons.

What You’re Getting

Standard UNC coarse thread pitch that matches most agricultural equipment bolts
Grade 2 strength that’s plenty tough for most farm applications
Zinc plating protects against rust and corrosion from moisture and chemicals
Large 1-3/8 inch size handles serious loads and structural connections
Standard hex design fits your regular sockets and wrenches

Built for Real Farm Work

This size nut shows up on bigger tractors, combines, and heavy implements where you need serious clamping force. You’ll find nuts this size on loader brackets, cultivator frames, chopper heads, and anywhere the engineers needed to distribute loads across larger areas. The coarse UNC threads are standard on most American-made agricultural equipment.

Made to Last

The zinc coating isn’t just for looks—it’s your insurance against the rust and corrosion that can lock up threads and make future maintenance a nightmare. Grade 2 steel provides reliable strength for most farming applications without the premium cost of higher grades.

Good to Know

Always use a flat washer under this nut to distribute the load and prevent it from digging into softer materials. If you’re replacing old rusted hardware, clean the bolt threads with a wire brush first. A dab of anti-seize compound on the threads makes future removal much easier, especially if the connection might see moisture or road salt.