Square Cone Lock Washer

Length is measured from under the head.

Square cone lock washer. Material codes steel zinc sz stainless steel ss all. Split lock washer sems are preferred when the sems are used with hardened bearing surfaces since the. Metric dimensions expressed in newton meters n m property class 5 8 screw material. Split ring lock washer sems metric.

The square cone square dome washer provides greater spring return and tension at minimum torque tolerances and has the strength to support maximum torque loading. They prevent loosening from small amounts of vibration. They accept a high clamp load while still maintaining spring action. Tests have shown that a square cone square dome washer will achieve the same clamp load as a standard conical washer at 30 less torque.

Also known as square cone sems screws the washer rotates freely but is permanently attached. Besides the single flat washer sems and the double washer sems we have the single split lock washer sems the single external tooth lock washers sems the single internal tooth lock washer sems and the single square cone lock washer sems. All are passivated for added protection against oxidation and corrosion. They are wider and thicker than most round washers making them good for distributing heavy loads.

The square cone washer provides locking action while avoiding damage to the mating surface. Square washers fit into slots and channels and have flat sides to keep them from rotating. This fastener is ideal for circuit board applications as well. Split ring lock washer sems inch.

Approximate tightening torques for machine screw sems with tooth lock washers or square cone square dome washers customary dimensions expressed as inch pounds grade 2 screw material. 316 stainless steel washers have excellent resistance to chemicals and saltwater. Apex fasteners square cone sems square cone sems offer compensation against vibration and thermal cycling. They may be mildly magnetic.