AS9120B, ISO 9001:2015, and FAA AC 0056B ACCREDITED

Aviation, Electrical Blogs - Stacked NSN

Shear pins are small, yet critical components used in various mechanical systems as a failsafe mechanism. These pins are designed to break or shear off when a certain level of force is applied, thus protecting more expensive or critical components from damage. In this blog, we will discuss all there is to know about shear pins, including how they work, what causes them to break, how to identify broken shear pins, and how to replace them.


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In the complex world of aviation, where every component plays a crucial role in ensuring safe and efficient flight, the Auxiliary Power Unit (APU) stands as a vital system in modern aircraft. An APU is a self-contained generator used to provide power to an aircraft when its main engines are not running. While it might seem like a minor asset compared to the massive jet engines often propelling an aircraft forward, the APU serves several critical functions that contribute to the overall operation and safety of an aircraft.


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In the vast realm of aviation, where precision and reliability are paramount, resistors play a crucial role in ensuring the safe and efficient operation of various systems. These practical devices are electronic components that regulate the flow of electric current in a circuit by either resisting or impeding its flow. To better understand resistors, we will explore some of the common types used in aviation, including adjustable power resistors and carbon film resistors, as well as shed light on their functionality and applications.


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Spring pins, also commonly known as split or tension pins, are a common form of fastener that can be used to secure two or more parts together in an assembly. Spring pins are constructed from coiled spring steel or other similar materials, and their design permits them to compress and expand to fit snugly within a hole, creating a secure and highly reliable connection. As spring pins often vary in terms of their exact specifications and design, it can be beneficial to have a basic understanding of how to choose the right spring pin for your needs.


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Despite being an essential component of an aircraft, engine mounts are frequently underappreciated and underrated. While overlooked, engine mounts are actually a sophisticated part of achieving proper aircraft operation. That being said, we will provide a brief overview of why these seemingly fragile mechanical components are important.


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Across a variety of industry verticals, one will typically find jaw couplings being used for power transmission in large, industrial machines. That being said, they often find homes in smaller, standard power transmission applications, and they offer the unique advantage of not requiring lubrication for mitigating movement. Made up of three components, two jaws and an elastomeric spider, jaw couplings operate in a single plane between two hubs to transmit power from a driving hub to a driven hub. For your better knowledge, this blog will take a closer look at jaw couplings, how they are used, and the advantages of different designs.


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A micrometer is an instrument used for making very fine measurements of dimensions such as length and diameter. Micrometers typically consist of a C-shaped frame with a moveable jaw that is operated by an integral screw. Metric micrometers in particular, generally measure in 0.01mm increments and imperial versions in 0.001 inches. Due to their size and design, micrometers can provide much more accurate measurements than other devices, such as dial or vernier calipers but this is highly dependent on the user’s care.


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Used in a diverse range of environments from workbenches in garages to landing gear on aircraft, caster wheels are versatile rolling devices that may be used to effectively support a load. Typically, casters contain a single wheel that is housed within a frame and are often used on the bottom of furniture and heavy machinery to allow them to roll smoothly across the floor. This allows for heavier objects to be moved with ease when they are too heavy to lift, or could otherwise cause undue strain on the person carrying them. They may be made of metal, plastic, wood, or other materials for varying capability and resistance to environmental factors. With an array of uses, there are many different types of caster wheels available, the most common of which are described below.

Plate Casters: As the most common type, plate casters are characterized by their flat, square-shaped mounting surface. Often, they will have four holes, one on each corner of the mounting device, that are used to secure the plate caster to an object. To install, bolts or screws can be used for a permanent hold. Aside from providing easy installation, the square shape of these casters has excellent weight distribution so they are often preferred for larger loads.


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Lockbolts, as their name suggests, are bolts that lock in place when installed, preventing loosening over time, even under extreme stress and vibration. They find use in a wide range of applications where rivets or conventional bolts are often utilized as lockbolts display increased strength when compared to other options. To better understand lockbolts, this blog will outline their uses, types, and unique features.


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In order for pressure gauges to continuously provide accurate readouts, they must be regularly calibrated using the correct technique. Although calibrating these precision gauges takes time and involves thorough attention, it is entirely necessary to avoid costly errors. Whether you are an expert in this field or have never worked with pressure gauges before, it is beneficial to review the essential details associated with the calibration process. In this blog, we will discuss everything you need to know when it comes to pressure gauge calibration.


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