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What Are Thick Washers Called? [Solved]

A Flat washer is a round outer diameter thick plate with a center hole (inner diameter) punched to the size of the bolt or screw size. Flat washers are normally used to distribute loads of threaded bolts, screws and nuts evenly as the fastener is tightened.

All About Washers - Types & Materials, USS vs SAE | Fasteners 101

Washers

Washers (Hardware) - Washer Types - Types of washers

Washers

Thrust Washers explained

Manual transmission thrust