Aircraft Washers

There are different types of washers that are used in aviation manufacturing and in the aircraft industrial sectors. In this article, we will discuss three different washer types, those being plain washers, lock washers, and shakeproof lock washers. Aircraft washers utilized in airframe fix are either plain, lock, or extraordinary sort washers. Read the helpful article below for more information.

1. Shakeproof lock washers can be described simply as round washers designed with tabs that are twisted upward. The tabs twist over the sides of a hex screw and are built so as to secure the nut. There are different techniques for making sure the lock washer does not turn or screw. For example, an outer tab bent to a descending 90° into a little opening, or an inner tab which fits a keyed jolt will keep the lock washer from turning. Additionally, shakeproof lock washers can withstand higher degrees of warmth and can be utilized safely under high vibrating conditions (hence the name shakeproof). If working with shakeproof washers, be sure to utilize it just once so that the tabs can bend at a subsequent time.

2. Plain washers should be utilized under lock washers to forestall damage or harm to the surface material. Plain washers, both of the AN960 and AN970 variety are often utilized under hex nuts. They provide a smooth bearing surface and are seen as useful for acquiring a tight hold for screw and nut assemblies. They are utilized to alter the form of castellated nuts so as to penetrate cotter pin openings in screws. Aluminum and aluminum composite washers might be utilized under screw heads or nuts on aluminum combination or magnesium structures where erosion brought about by unique metals is a factor. It is common to use a cadmium plated steel washer under a nut bearing against a structure as this washer will oppose the cutting activity of a nut in a way that is better than an aluminum combination washer.

3. Lockwashers, meanwhile, are utilized with machine screws or fasteners where the self locking mechanism or castellated-type nut isn't fitting. The spring activity of the washer (AN935) gives enough friction to keep a loose hold of the nut but prevent it from loosening. Lock washers should never be used under certain conditions including with latches to essential or auxiliary structures, where the screw is liable to visit evacuation, and where the washers are exposed to the wind current. Additionally they shouldn't be used when on any piece of the airplane where downplay may bring about harm or threat to the airplane or work force or where such downplay would allow the launch of a joint to the wind current.

If you’re in need of such tools like lock washers or other washer type parts, trust in the team at ASAP Aviation Procurement. At ASAP Aviation Procurement, we are a trusted distributor for washer components and hardware parts. We’re always available and ready to help you find all the parts and equipment you need, 24/7-365. For a quick and competitive quote, email us at or simply give us a call at +1 (714) 705-4780.


October 12, 2022