As the name suggests, a bolt-type shackle comes with a bolt, nut, and a cotter pin, making it a secure rigging tool. With a bolt and nut securing the shackle pin, they remain closed even when subject to rotation. These shackles come in different sizes and designs, including Dee and Bow shackles.They are also made from various materials, including stainless steel, carbon steel, and alloy steel. You can find them in construction, shipping, and oil and gas, for securing heavy loads during lifting, towing, and other operations.At Holloway, we offer a wide range of bolt-type shackles. Whatever your rigging needs may be, we've got you covered. Just give us a call!

A clamp load, also referred to as a preload, is the force that holds a joint together. In a bolted joint, the compression occurs on the surface of impact between two parts of the joint, creating a clamping force. When used in bolted joints, this creates tension that keeps the bolt together and makes it stronger and more reliable. If the clamp load of a bolted joint is too high, it could lead to wear and tear on the threads. If it is too low, the bolt may loosen.

In 1992 the National Transportation Safety Board (NTSB) commissioned a report to study the causes of wheel separations from medium and heavy duty trucks. The report showed that on average between 750 and 1050 wheel separations were reported in the United States each year. Remarkably the report went on to conclude that “… the leading causes of wheel separations from medium and heavy duty trucks are improper tightening of wheel fasteners…” This is merely one, poignant example of many, illustrating the importance of getting the fastener tightened properly. In fact, one can make the claim that “properly tightened joints seldom come loose”.

Securing a connection in an application can be more complicated than it appears. To the average person, a clamp is simple – turn the screw and the clamp tightens up. But when you break down the interactions and try to quantify individual contributions, things aren’t as simple as they appear.

A clamp load, also referred to as a preload, is the force that holds a joint together. In a bolted joint, the compression occurs on the surface of impact between two parts of the joint, creating a clamping force. When used in bolted joints, this creates tension that keeps the bolt together and makes it stronger and more reliable. If the clamp load of a bolted joint is too high, it could lead to wear and tear on the threads. If it is too low, the bolt may loosen.

When a bolt is tightened into a mating threaded part, the two components interact by pulling each other together. This force is called clamp load and is what keeps the joint from coming apart. Provided that the force pulling it together is greater than the outside forces (service loads) that are trying to pull it apart, no problem will result with the attachment. Unfortunately, friction plays a large part in this system. Of the 100% of torque applied to fasteners to pull them together, 50% is lost in underhead bearing face friction and 40% is lost through friction between the mating threads.

The 20th China Yongnian Standard Parts Manufacturers Association a

Eye bolts are versatile fasteners commonly used in various industries for lifting, riggin

Used as a lifting or securement point, eye bolts are one of the most popular types of rigging hardware. Just like slings, sling hooks, and shackles, eye bolts come in a number of different designs and configurations. Eye bolts can be used as a connection point for rigging, anchoring, pulling, pushing, or hoisting applications.Although eye bolts are commonly used in industrial applications, they’re also commonly misunderstood or used incorrectly. It can be confusing to understand what type of eye bolt to use for your application in conjunction with your other rigging gear.We get questions all the time about the different types of eye bolts and how or when they can be used—which is why we wrote this article. We don’t want you to guess or choose incorrectly—that could result in a rigging failure that could cause significant damage or injury!

Rope Services Direct is able to supply lifting eye nuts (often called “eyes” in the industry). Eye nuts are suitable for a variety of applications and provide a circular fixture with multiple purposes for lifting operations. Please find below all the product information that you’ll need to know about this type of product. You can also find out more about Rope Services Direct on our About us page.

When using eye bolts, it’s crucial to consider load capacities, material compatibility with the environment, and proper installation techniques to ensure safety and reliability in each specific application. Always follow manufacturer guidelines and industry standards for the correct use of eye bolts.

Selecting the right tool for the job can make a huge difference in productivity and quality of work. There are certain tools whose proper selection and use go beyond making your job faster and easier and actually affect workplace safety.Eye bolts are such tools. For this reason, selecting and using eye bolts correctly can make the difference between a safe work environment and one that puts people’s lives at risk.

Eye bolts are a robust and easy‑to‑install attachment point for other rigging hardware, including slings and shackles. They are among the most widely used lifting and rigging products and play a key role in industrial lifting, hoisting, towing, and anchoring. Used correctly, eye bolts are a safe and durable component in rigging assemblies.  Here, we introduce the various types of eye bolts that are available, what they're used for, and - just as important - what they should not be used for. We'll also explore how to install eye bolts to maximize safety and effectiveness. But first, we’ll provide a high-level introduction to this lifting and rigging hardware.  

The primary differentiation in eye bolt construction is whether they are forged or formed-and-bent. Forged Eye Bolts: These are created by hammering or pressing the formable metal into the loop form of the eye. Forged eye bolts are a stronger and more durable construction capable of withstanding loads up to the tensile strength of the material used. The working load capacity (WLL) of all eye bolts decreases significantly depending on the angle of pull, up to 70% at 45°. 

Machinery eye bolts are one of the most common types of rigging hardware used for lifting or securing machinery and equipment. Like slings, sling hooks, and shackles, eye bolts also come in various designs and configurations, made of different materials, like 304 stainless steel and zinc-plated high-carbon steel.While they're widely utilized in industrial applications, eye bolts are also one of the most frequently misinterpreted and misused pieces of hardware. Their misuse and overuse are unfortunately widespread, and given their importance in overhead lifting, abusing them raises the danger of failure, equipment damage, and injury.In this article, we'll list the do's and don'ts of hoisting a load with eye bolts and some common activities that make their use dangerous.

Eye bolts are one of the simplest and yet most often misused pieces of rigging equipment. There are several factors that must be considered when choosing and installing eye bolts. When eye bolts are used improperly, they can be damaged or broken leading to catastrophic accidents and injuries even when performing fairly basic lifts. 

An eye bolt is a very common and fundamental piece of rigging hardware used to create secure anchor points in various lifting and rigging applications. Their signature design provides easy accessibility for rope and rigging hooks to either loop through or attach to without compromising under serious tension forces. Knowing how to secure these devices, however, is imperative to ensure it functions properly and safely while reducing the risk of breaking, bending, or damaging its surroundings.Read on to know more about eye bolts and their different types, as well as how to use them effectively in the safest ways possible.

The eye bolt (otherwise known as a lifting eye bolt or eyelet) is a type of bolt with a loop at one end. They are used for a wide variety of material lifting applications and may either pivot or swivel. The securing eye must be securely attached to the structure before ropes or cables are tied for lifting. In some instances, there will be a purpose-made hole for the eye bolt. The load may also have to be attached to a hole designed for alternative use, such as the stud.

An eye nut is an exceptional pole line hardware and fastener used for pole line and overhead line construction.When you make a decision to purchase this fastener, always search for one that is very easy to install.You should always search for one that is reliable.As you read this guide, you will be able to learn about installation and application, eye nut manufacturing process, why you need it, types, specifications, and other aspects that are very important.For more details, read on.