ThePipingMart Blog Fasteners What is J-Bolt? Properties, Dimensions and Uses

What is J-Bolt? Properties, Dimensions and Uses

What are J-Bolt

J-bolts are a fastener in many industrial, commercial, and residential applications. These bolts come in various shapes and sizes, each designed to meet specific needs. This blog post will look at what J-bolts are, how they work, and their different applications in different industries.

What is a J-Bolt?

A J-bolt is a U-shaped fastener threaded on one side and bent into a “J” shape on the other. The bending of the bolt creates two points of contact for securing any material to its base. This makes it easy to connect two objects without the need for complicated tools or additional hardware. Furthermore, because of its shape, it can be inserted into pre-drilled holes with minimal effort.

How Do J-Bolts Work?

J-bolts are designed to provide secure fastening between two materials. It is inserted through two pre-drilled holes and then tightened into place with a wrench or ratchet set. Once tight, the bolt will create two points of contact—one at the top point of the “J” and one at the bottom—for a secure connection between materials. This makes them ideal for anchoring walls or structures to the ground or connecting beams in larger structures such as bridges or buildings.

J-Bolts Uses

Due to their versatile design, J-bolts can be used in many different applications across different industries. Their most common use is in construction, where they anchor walls and support beams in buildings or bridges. They can also be used in outdoor settings such as gardens or parks, where they securely hold down benches or playground equipment onto concrete surfaces. Additionally, they are widely used in industrial settings to hold down heavy machineries such as presses or conveyor belts onto factory floors or to support heavy pipes from overhead beams.

J-Bolts Properties

  • J-bolts are L-shaped fasteners with a threaded shaft and a bent portion that forms a hook or eye.
  • J-bolts are typically made from carbon, stainless, or galvanized steel for corrosion resistance.
  • J-bolts secure materials such as pipe, cable, or conduit to concrete or masonry surfaces.
  • The bent portion of the J-bolt anchors the fastener in place, while the threaded shaft allows for a nut and washer to be attached.
  • J-bolts can be installed in wet or dry concrete, but they must be installed in accordance with the manufacturer’s instructions.

J-Bolt Dimensions

(A x B)
Inside Hook Diameter
Thread Length
#8-32 x 1-7/8″ 5/16″ 1-1/4″
#10-24 x 2-1/8″ 3/8″ 1-1/4″
1/4″-20 x 2-5/16″ 7/16″ 1-1/2″
1/4″-20 x 4″ 1/2″ 2″
1/4″-20 x 6″ 5/8″ 2-1/2″
5/16″-18 x 3″ 1/2″ 2″
5/16″-18 x 5″ 5/8″ 2-1/2″
5/16″-18 x 7″ 5/8″ 3-7/8″
3/8″-16 x 3-3/4″ 5/8″ 2-1/4″
3/8″-16 x 5″ 5/8″ 2-1/4″
3/8″-16 x 7″ 5/8″ 2-1/4″
1/2″-13 x 6″ 1″ 3″


J-bolts are an essential part of any construction project and many industrial projects due to their ability to provide secure fastening between two objects without needing complex tools or extra hardware components. In this blog post, we outlined what exactly a J-bolt is and how it works before discussing its various uses across industries, from construction sites to factories and warehouses. If you’re ever faced with a task requiring reliable fastening between two materials, consider using a J-bolt! With its simple yet effective design, you won’t have trouble finding an application for these versatile bolts!

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