Welcome to Corrington Wheeler

How Does an Expanding Stem Caster Work?

Expansion stem casters are great for mounting casters into structural tubing without needing bolts or pins. Instead, they use an expanding rubber sleeve that expands to fit the tubing. This allows the caster to be mounted to any structural tubing furniture, carts, or stands. Moreover, because they work without bolts or pins, they are corrosion-resistant.

Expansion stem casters are designed to mount casters into many tubing fixtures.

Expanding stem casters can be a great choice if your furniture has a tubular base. These casters feature a long, threaded stem with a soft rubber bushing. Once you have mounted the bushing, you tighten the nut until the rubber expands to fit into the tube. They are perfect for various applications, including carts, stands, and other furniture made from structural tubing.

These casters utilize an expanding stem kit, consisting of a series of soft rubber bushings and a special threaded nut that fits into various tubing fixtures. The mounting plate is then threaded to a variety of fixtures. In addition, an expanding stem caster features a rubber expanding applicator to provide maximum compression against the tubing.

Expansion stem casters resist corrosion

Stainless steel expanding stem casters resist corrosion, and their wheels are impregnated with an antimicrobial agent. This antimicrobial agent prevents microbes from growing on the wheels and damaging the casters. Other benefits of stainless steel casters include thread guards to prevent dirt from entering the caster. In addition, double ball swivel bearings provide smooth swivel motion. They’re also perfect for pharmaceutical and medical facilities, where cleanliness is paramount.

Standard zinc-plated casters are the least expensive types of non-corrosion compared to stainless steel cylinder liners. Nevertheless, they can be eroded if improperly maintained. Therefore, standard zinc-plated casters are still recommended for many applications, especially those that involve high-stress environments, such as industrial settings. But be careful about selecting these casters: they are not the most corrosion-resistant option.

Expansion stem casters work without bolts or pins.

Expanding stem casters are incredibly easy to use and among the most popular types of casters. Their unique design makes them easy to remove from the fixture. They’re also powerful, corrosion-resistant, and made of quality materials to withstand everyday use. Here’s a look at how they work. Read on to learn more about this popular type of caster. 

– They work without bolts or pins!

– These casters are available in different wheel sizes and materials. The top nut compresses the rubber bushing and expands outward when the nut is tightened. This design is trendy in medical and pharmaceutical facilities, where cleanliness is paramount. 

– These casters are powerful

– They can support up to a thousand pounds!

Expansion stem casters are ideal for prep tables.

Expanding stem casters are an excellent solution for work tables, prep tables, and racks. The casters mount easily into various tubing fixtures, including round leg lengths. The rubber adapter expands and contracts as the nut are tightened, allowing the caster to fit tightly into a round leg. As a result, expanding stem casters can be used to roll prep tables, work tables, and racks without needing tools or permanent modifications.

These casters are easy to install on most work tables. Install them in the hollow leg length of the table and tighten the hex nut underneath the swivel bearing with an Allen wrench. Expanding stem casters can be easily removed and re-installed in minutes. They are also NSF-approved and RoHS-compliant.

What to Look For in a Towing and Wrecker Service

A towing and wrecker service can come in handy when you need a tow. Here, you’ll learn what to look for in towing and wrecker services Chisago county, MN. Read on for the equipment they need, how they’re insured, and how their rates compare. Then, you’ll be well-equipped to decide on your next towing or wrecker service.

Equipment required

Towing and wrecker services use various equipment to safely tow vehicles. The equipment includes hitch accessories such as ball mounts, hitch couplers, and lock and hook devices. These should be of high quality to avoid problems during towing. Other equipment includes protective gear to avoid damaging the vehicle. 

A range of safety equipment is essential, including wheel ties and tie-down chains. These are essential for ensuring that a car cannot swing open or have its wheels loosely secured during transport. Ideally, tow trucks should also have a fire extinguisher and adequate supplies of oil absorbent. Whether the vehicle is a passenger vehicle or a commercial truck, the tow truck’s safety equipment will reflect the quality of its service.

Insurance coverage

When insuring your towing and wrecker business, including the vehicle your service will tow, the heavier your truck is, the higher your premiums will be. It is also important to note that if your company provides 24-hour roadside service, you can expect to pay higher premiums than a smaller company. Also, you should be aware of the loss-run history of the towing company you are insuring. Higher claims mean higher premiums.

Towing and wrecker services often have liability insurance and may be covered under your auto insurance. Some policies also cover on-hook towing. In Texas and Virginia, this type of coverage is known as garage keepers’ legal liability coverage. This type of insurance covers the costs of towing another person’s car. The policy can reimburse you for the costs of towing and labor after the fact if that driver is at fault.


Rates for a towing and wrecking service are often very similar, depending on your area. A standard towing fee is usually around $50, but that may be higher depending on where you are located and what type of towing service you need. Many companies charge a base hook-up fee of $35 to $100, then add on a per-mile charge ranging from $2.50 to $5 per mile. While the base rate is pretty consistent, the towing fee can vary greatly depending on the size of the vehicle and the distance it needs to travel. Generally, a four-door sedan will cost less than a five-mile tow, while a 40-mile flatbed rig may cost as much as $150 or more.

Towing services can range in price, but you should always check if they offer competitive pricing. The cost of towing a large vehicle will increase the total rate, but they will typically be much cheaper during business hours. In addition, it is also best to avoid calling the towing company after business hours or very early in the morning, when rates can be higher than normal. And it would help if you always inquired about the city’s ordinances before using a towing service.

Understanding the Fundamentals of Aircraft Fasteners

There are many fasteners used in aircraft. Most fasteners are visible during the preflight process. However, some are not visible to the naked eye. In this article, we will learn about the process of liquid honing, Vickers hardness tests, and zinc plating. We will also learn about thread rolled after heat-treating. Understanding the fundamentals of aircraft fasteners will help you recognize which fasteners should be removed before flight.

Liquid honing

Aircraft fasteners typically contain advanced plastics and titanium to withstand corrosion, abrasion, and the high temperatures found in air travel. These parts can reduce aircraft maintenance costs by being lighter than their counterparts. How to identify the hardware distributors on your plane? The specification number represents the part’s manufacturer.

The process is designed to achieve the required finish for precision aircraft fasteners, such as fasteners on commercial and military aircraft. The process involves using a tool with a beam and cap on one side. The weaker side is the one that experiences more bore distortion, so this connection provides an advantage. The process is also characterized by controlled force systems that ensure that the tool never overstresses itself or causes excessive bore distortion.

Vickers hardness tests

The Vickers hardness test for aircraft fasteners determines the strength of a material under a specific load. A Vickers hardness value is a number with an acronym referring to the triangle formed by a diamond indenter. The test measures the amount of force a material can withstand under a given load, usually expressed in kilograms per square millimeter. This number can be converted to several different types of force and is described in pascals. It is important to note that this test is different from HM because it considers the amount of plastic or elastic deformation that a piece can undergo after being indented.

The Vickers hardness test was developed in 1924 and is widely applicable to most materials. Its range of tests is one of the widest of any hardness test. It is governed by the ASTM standard E384 and can measure loads ranging from 1 gf to 120 kgf. Because of its versatility, the Vickers hardness test is a valuable tool for aerospace manufacturers.

Zinc plating

When you think of corrosion-resistant fasteners, you probably think of titanium or beryllium, but the reality is much more complicated. Titanium fasteners are incredibly light and perform exceptionally well under extreme temperatures. In contrast, beryllium fasteners are nearly 40% heavier and far more brittle. While beryllium fasteners do not require any special maintenance, zinc plating greatly increases the corrosion resistance of steel fasteners. In addition, zinc plating leaves a golden or shiny appearance to them, while chromium offers excellent corrosion resistance. But be warned: zinc coating thickness is directly proportional to the amount of zinc material present on the parts.

The disadvantage of zinc plating for aircraft fasteners is that it can cause hydrogen embrittlement. This is a condition in which trapped hydrogen weakens the metal and causes it to crack. The zinc must be baked after plating to diffuse hydrogen throughout the metal to combat this issue. This process takes three hours. In addition, Paulo’s Murfreesboro division offers in-house salt spray testing.

Thread rolled after heat-treating.

A thread rolled after heat-treating in aircraft flanges is ten to twenty percent stronger than one produced using a ground or cut thread. Threads produced with rolled threads also have higher fatigue resistance, and there is no waste of stock during the forming process. The rolled threads are also more wear-resistant, as the surface is more complex than the cut or ground thread.

A thread rolled after heat-treating is a standard process used in aerospace fasteners. It extends the fatigue-resistance of threaded elements by introducing residual compressive stress during the process. Thread rolled fasteners can assemble connecting rods, cylinder heads, and main bearings in aircraft. Their high workforce makes them suitable for these high-stress applications.

Self-locking aircraft “jet nuts.”

Self-locking aircraft “jet nuts” are a type of bolt designed for tight quarters, such as on aircraft. These nuts are lightweight, compact, and highly durable. They are commonly used in high-stress applications and are often preferred over conventional locknuts because of their lower weight and smaller profile. However, despite these advantages, these nuts lack a warranty or traceability. 

Self-locking aircraft “jet nuts” feature a locking mechanism that activates when a bolt is tightened. A surface-bearing locking nut can rotate freely under normal conditions but is usually compressed against a bearing surface to activate the locking mechanism. Locking aircraft nuts can come in many subsets and models suited to various applications. However, unlike other aircraft nut styles, it is designed with a self-locking mechanism. Despite the name, this nut is self-locking, and its self-locking mechanism ensures that it will stay securely in place once it is fully tightened.