Description
When you’re working on equipment that needs to stay together under serious stress, you don’t want to mess around with cheap hardware store bolts. Grade 8 bolts are the heavy hitters—they’re significantly stronger than standard Grade 5 fasteners and built to handle the kind of punishment farm equipment dishes out every day. This 5/16-inch bolt gives you that extra strength in a smaller package that’s perfect for many tractor and implement applications.
What You’re Getting
- Grade 8 hardened steel construction for maximum strength and durability
- Zinc plating that helps stand up to moisture and road salt, so they won’t rust out on you in a season or two
- UNC coarse thread pitch that grips tight and installs easily
- 1-1/2 inch length that’s ideal for connecting brackets, guards, and lighter assemblies
Built for Real Farm Work
This size bolt is commonly found throughout tractors and implements where you need reliable strength but don’t need the bulk of larger fasteners. You’ll see 5/16-inch bolts holding together everything from PTO shields and hydraulic line brackets to cab components and electrical mounting points. They’re also used for securing various implement frames and connecting lighter structural components that still need to handle vibration and stress.
Made to Last
Grade 8 steel is heat-treated and hardened to handle serious loads without stretching or failing. This heavy-duty construction ensures the bolt maintains its integrity under the extreme stress conditions typical of modern farming operations. The zinc coating adds corrosion protection that keeps these bolts looking good and functioning properly even when exposed to fertilizers and field conditions.
Good to Know
Always use a flat washer under the head and nut to distribute the load properly. A little anti-seize compound on the threads makes future removal much easier, especially if the connection might see heat or road salt. These bolts take a 1/2-inch wrench or socket for installation.
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