Square Cone Lock Washer

Size 4 40 6 32 8 32 10 32 7309.

Square cone lock washer.

A curved washer protects delicate surfaces while providing constant tension. This fastener is ideal for circuit board applications as well. The square cone washer provides locking action while avoiding damage to the mating surface. Apex fasteners square cone sems square cone sems offer compensation against vibration and thermal cycling.

They prevent loosening from small amounts of vibration. 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. Also known as square cone sems screws the washer rotates freely but is permanently attached. 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.

Metric dimensions expressed in newton meters n m property class 5 8 screw material. They are wider and thicker than most round washers making them good for distributing heavy loads. 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. Split ring lock washer sems metric.

316 stainless steel washers have excellent resistance to chemicals and saltwater. 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. They accept a high clamp load while still maintaining spring action. They may be mildly magnetic.

Split ring lock washer sems inch. Length is measured from under the head. Split lock washer sems are preferred when the sems are used with hardened bearing surfaces since the. Square washers fit into slots and channels and have flat sides to keep them from rotating.