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Washers

Military Standard MS20002 Cadmium Plated Steel Washers
Starting At: $0.05
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Military Standard MS20002C Countersunk Steel Washers
Starting At: $0.06
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Military Standard MS9320 Series Flat Washers
Starting At: $0.09
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Military Standard MS35333 Series Washers
Starting At: $0.03
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National Aerospace Standard NAS1149B Series Brass Washers
Starting At: $0.04
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National Aerospace Standard NAS1149C Series Stainless Washers
Starting At: $0.02
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National Aerospace Standard NAS1149D Series Aluminum Washers
Starting At: $0.02
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National Aerospace Standard NAS1149E Series Stainless Washers
Starting At: $0.22
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National Aerospace Standard NAS1149F Series Steel Washers
Starting At: $0.02
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National Aerospace Standard NAS1149G Series Alloy Steel Washers
Starting At: $0.04
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British Standards SP127J Washer
SkyGeek Price: $2.47
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Spaenaur W2073 Washer - Countersunk - Steel
SkyGeek Price: $0.42
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SkyGeek knows aviation involves managing an assortment of tasks and functions. Certainly pilots and mechanics know this. With so much on their plate it's easy to forget about small parts including thin, round plates. That's right, we're talking about washers—those disk-shaped pieces of hardware.

Washers work by attaching themselves to fasteners such as screws or nuts. They serve as a means of distributing a threaded fastener's load and can also be used as spacers and as a way to curb vibrational forces.

Washers can be organized into types—plain washers, lock washers, and special washers. Plain washers are placed under nuts in order to provide a smooth bearing surface; they also act as a shim for a bolt's thread and its adjacent nut. Whenever castellated or self-locking nuts are not used, lock washers are often employed; they are anti-vibration, i.e. they create enough friction to keep a nut in place. "Special washers" is a term that has a broad scope, meaning it refers to washers designed for special applications. Thus, there is no single special washer but many including ball seat and socket washers—just to name a few.

A washer's material is useful in determining the appropriate one. Generally they come in metal (steel, brass, copper) but can also come in plastic or rubber. When choosing a washer, also consider these variables: thickness, inner diameter, and outer diameter. Because SkyGeek carries a growing inventory of washers that meet or exceed U.S. military specifications, we suggest you click on each series of washer and compare the differences so that you can make the best purchase.

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