Helical spring lock washers have been historically among the most widely used anti-loosening assembly components on the market. · They enhance the security of 

NASA has known for 30 years now that split lock washers don't do anything. "The lockwasher serves as a spring while the bolt is being tightened.

Spring and locking washersEdit ; Belleville washer, also called cupped spring washer or conical washer. Belleville washer.jpg. A washer with a slight conical 

Jun 07,  · The most common type of lock washer is a helical lock washer, also known as a split washer. It looks like a ring with two uneven ends offset from one another. These ends bite into the fastener, keeping it from turning. A common alternative to helical washers are

Also known as high-collar lock washers, these have smaller outside diameters than standard split lock washers to fit neatly under socket head cap screws. As a screw is tightened, they flatten to add tension to the joint and prevent loosening from small amounts of vibration.. Zinc-plated steel washers are corrosion resistant in wet environments.. 18-8 stainless steel washers have good chemical

Helical spring lock washers are designed to: (1) function as a spring to compensate for developed looseness between the component parts of a fastened assembly; (2) distribute the load over a larger area for screws or bolts; and (3) provide a hardened bearing surface. The scope does not include internal or external tooth washers, nor does it

Split Lock Washers, which are also called helical spring lock washers, are metal rings split and twisted so the cut ends no longer align. When compressed, they are squashed flat and exert force to regain their original shape. In addition to acting as a spring, a split washer may penetrate the surface of softer metals, increasing friction that

They are also often called split lock or split ring washers. A spring washer has a split in the washer section that when tightened each side of the split 

Helical spring lock washers are the most common washers used to prevent components from loosening. · When compressed, the lock washer will twist and flatten.

Helical Spring Washers Extra Duty (Extra Heavy) Helical With a further increase in O.D., thickness and bearing area, the Extra-Duty (Extra Heavy) helical spring spilt lock washer absorbs exceptionally high torques and retains tension under heavy loads. WCL also refers to these as Extra Heavy (EH).

American National Standard Helical Spring Lock Washers ANSI/ASME B18.21.1 Helical Split spring lock washers are available in four series: Regular, heavy, extra duty and hi-collar as given below. Helical spring lock washers made of materials other than carbon steel are available in the regular series. Click on Image to Enlarge