Nominal; Washer; Size Max Min O.D. B; Max Section; Width; W Section Thickness, T No. 2; 0.086 0.094 0.088 0.172 0.035 0.020 No. 3; 0.099 0.107 0.101 0.195 0.040 0.025 No. 4; 0.112 0.120 0.114 0.209 0.040 0.025

Helical Lock Washer, Helical Spring Lock Washer, Split Lock Washer; Helical spring lock washers are the most commonly used part to prevent assembly components from loosening. They apply greater bolt tension per unit of applied torque, and provide protection against loosening resulting from vibration and corrosion. Use our Quick Search below to

The lockwasher serves as a spring while the bolt is being tightened. However, the washer is normally flat by the time the bolt is fully torqued. At this time it is equivalent to a solid flat washer, and its locking ability is nonexistent. In summary, a lockwasher of this type is useless for locking." (p9)

A ring split at one point and bent into a helical shape. This causes the washer to exert a spring force between the fastener's head and the substrate, which 

UNI 8839 curved Split Spring Lock Washer - Metric helical spring washers & shims UNI 8839 split curved spring lock washers is a helical-shaped split UNI 8839 split curved spring lock washer, also called helical spring washers, it is a helical-shaped split ring that has also been twisted . Skip to content. Home; All Products Menu Toggle

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

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).

Jul 29,  · Also known as spring lock washers, split washers are characterized by a break point. Unlike flat washers, they don’t consist of a solid and flat piece of metal. Rather, split washers are broken or “split.”. This unique design means that one side of a split washer is higher than the other side. Split washers are made by “splitting” a

Also known as a split washer, a lock washer is a special type of washer that's designed to create tension so that the bolt doesn't loosen or 

Split washers do a good job preventing bolts from loosening. Spring lock washers have a warped shaped which locks with the thread lines of a bolt.

Compared to standard split lock washers, these are thicker and have larger outside diameters. Split Lock Washer Assortments As a screw is tightened, these washers flatten to add tension