What Are Fire Sleeves and Why Do Airplanes Have Them?

Have you heard of fire sleeves? They are commonly used in airplanes. As shown in the adjacent photo, fire sleeves consist of a hollow, sleeve-like tube. For a better understanding of fire sleeves, including why airplanes have them, keep reading. … Read More

An Introduction to Countersunk Washers

Washers are commonly used in conjunction with a threaded fastener. Bolts, for instance, are often inserted through the center of a washer. The washer will distribute the bolt’s load more evenly across the surface of the object, thus protecting the … Read More

The Beginner’s Guide to Blind Fasteners and How They Work

No airplane is complete with fasteners. Depending on the size, airplanes may contain anywhere from 1 million to 3 million fasteners. Each of these fasteners is responsible for holding one or more parts in place. In addition to traditional fasteners, … Read More

3 Common Types of Jet Fuel Additives

Nearly all gas-turbine airplanes run on jet fuel. Also known as aviation turbine fuel, it’s a type of kerosene that’s made of ultra-refined petroleum. It was invented in the mid-1900s. Since then, jet fuel has been used to power countless … Read More

How to Measure Rivets With a Cherry Gauge

Rivets are one of the most common types of fasteners used in airplanes. Airplanes still have screws and bolts, many of their components are secured with rivets. Rivets don’t have the same type of threaded body as screws and bolts. … Read More

5 Facts About Terminal Blocks

Terminal blocks are commonly used in the electrical systems of airplanes. They consist of block-shaped connectors that support multiple wires or cables. Rather than using a twist-cap connector, for instance, you can connect two wires with a terminal block. Below … Read More

The Beginner’s Guide to Castellated Nuts

When researching some of the different types of nuts used in the aerospace manufacturing industry, you may come across castellated nuts. They are one of the most common types of non-self-locking nuts in airplanes. Castellated nuts are essentially castle nuts. They feature … Read More

How Fuse Boxes Work in Airplanes

Fuses are commonly used in the electrical systems of airplanes. Up until the mid-1960s, in fact, they were the primary form of protection for electrical devices in airplanes. While many modern airplanes now feature circuit breakers, fuse boxes aren’t obsolete. … Read More

What Are Retaining Rings and How Do They Work?

When most people think of fasteners, they envision nuts and screws. While threaded fasteners such as these are common, there are other fasteners that don’t feature any threading. Retaining rings fall under the latter category. They are used in fastening … Read More