Skip to main content

Hollo Bolt: How does it work?


In hollow rectangular solid material (RHS) construction, the hollo bolt (TM) was developed to fasten materials such as steel I-beams to this hollow but strong material. Hollo bolt fasteners are used around the world in the construction of multi-story buildings, bridges, highway overpasses and various other applications where solid metal hollows are fastened together. Find out more about how the hollo bolt works below.

hollo bolt usage

Flow drilling

Flow drilling is the process of drilling a hole through hollow structural materials, such as rectangular steel pipes, without actually removing any of the metal. The hole is automatically sealed around its edge as it is formed. A tool called a threaded roll then draws a thread on the circumference of the hole, allowing it to accept a standard threaded bolt as a fastener.

The Hollo Bolt

The Hollo-Bolt assembly has 3 parts, the cone, the body and also the threaded bolt. It is pre-assembled and comes in a wide range of sizes for various clamping requirements. The Hollo Bolt is created of mild steel, with a zinc coating to stop corrosion. Custom made Hollo bolts can be manufactured from high quality stainless steel. The Hollo Bolt can also be manufactured with a socket or button head, or with a countersunk set screw. Hollo bolts are manufactured in a variety of strengths to provide greater structural integrity than other types of fasteners. Contact Lindapter for more info.

Hollo Bolt Sizes

Hollo bolts are produced in sizes from 4 1/2 cm (1 3/4 inches) to eight cm (3 1/4 inches) long.

Advantages of Hollo screws

Due to the consistency of Hollo Bolts, a typical size may be chosen and used throughout the development project, saving time and inventory costs. Hollo Bolt fasteners also minimize the amount of welds that must be accustomed join metal to metal, reducing costs and increasing worker safety.

Hollo bolt insertion

The Hollo Bolt inserts into drilled flow holes in both the structural material and the element to be fastened, up to the bolt collar. The hex head of the bolt protrudes past the collar. Hollo bolts can be inserted at any angle of the material from 30 to 90 degrees.

hollo-bolt lindapter


Tighten the Hollo bolt

The Hollo Bolt is tightened by placing an open end wrench around the collar to hold it steady and placing an appropriately sized torque wrench on the hex head to tighten it. An electric key is being developed that can perform both functions at the same time. By applying torque to the hex head, the flanges on the body of the Hollo Bolt open, anchoring the fastener deep into the solid structural hollow material.

Hollo bolt sealing

Various sealants have been developed for Hollo Bolt to reduce water penetration. Information on these is available from the manufacturer, Lindapter.

How many Hollo screws to use?

At least 4 Hollo bolts must be used to fasten a plate to a solid structural hole. Typically, 8 Hollo Bolts are used, in a 2 column format, depending on the width of the plate. Measure carefully when placing the Hollo bolts through the adjacent faces of the structural hollow solid in order that the bolts don't acquire contact with one another.

lindapter hollo-bolt

Procedure to remove a pre-installed Hollo-Bolt

Using a pneumatic tool to remove the Hollo-Bolts:

  1. Put pneumatic hand tool in reverse mode - counterclockwise rotation.
  2. Place an appropriately sized wrench (depending on the size of the necklace) on the flats of the necklace to hold it in place.
  3. Use the pneumatic tool to loosen the bolt.
  4. Continue in reverse mode until the cone inside of the RHS at the opposite end of the bolt is released to drop into the RHS.
  5. The bolt can now be removed as can the sleeve by prying off the collar with a pinch or pry.
Labels:

Comments

Post a Comment

Popular posts from this blog

WHAT BIKE TO BUY? 5 TIPS TO GET YOUR CHOICE RIGHT

Buying a bicycle for some people is very simple, but for others it is more difficult. Knowing which bicycle to buy and making the best choice depends on the construction materials, the brands, and especially what use we will give the bicycle. In this sense, a lot depends on whether you are looking for a bike for daily and urban use or a specialized bicycle for practicing sports. So you are wondering what bike to buy, this article is for you. We will review all the aspects and tips to consider before buying a bicycle , whether it is your first bike or one to improve and renew the one you have. Today there is a lot of offer of bicycles and many users get dizzy before so many options. Before choosing your bike, you should ask yourself the following questions: Why do I want a bicycle? When and where will you use the bicycle? Does one have an area to store it? How much do you want to invest in a bicycle? Get the size of your new bike right After having answered all these questions
Post a Comment
Read more

The bottle dress: how do you design a wine label?

On countless occasions, people choose a wine from an expert wine label designer in Australia , guided by the attractiveness or picturesqueness of its presentation, which is the dress on the bottle, and to which the wineries give increasing importance. What services does wine design offer to wineries? We recreate the dream of the winemaker or the winery in image. The process of creating wine is so exciting that when it comes to the dress of the bottle, we must communicate it. For over 20 years we have been working in the wine industry designing or dressing the product. As a second step, the promotional material required to position the product in the market is projected. We also offer advice on the name of the wine, the type of bottle and the capsule. What do wineries ask to express on the label? There is no common requirement, each one wishes to express their own philosophy: differentiation is the premise. It seeks to communicate a concept, tell a story, and that is generat
Post a Comment
Read more

10 mistakes to avoid when laying bathroom tiles

Whether you are tiling the bathroom shower or the bathroom floor on your own, don't fall for these common pitfalls of tiling. Keep the following common mistakes in mind as you work to make the process easier and your results professional. Remember to consult a professional tiler if you need help. Choosing the wrong adhesive Use a waterproof adhesive for any tile around a bathtub or shower. Even the best-fitting tiles can let some water seep into the adhesive, and the non-waterproof adhesive will break down and crumble, eventually causing the tiles to crack and break. Do not forget that water can reach the adhesive in the form of condensation. Buy too few tiles You must buy more tokens than you think you need. The best compromise between cost and practice is to get 15-20% more than you expect to use. This insures against breakage, miscalculations and difficulties in cutting to size. You can keep reserve tokens in reserve in case any of them break down in the future. Alterna
Post a Comment
Read more