Square Cone Lock Washer

Split ring lock washer sems metric.

Square cone lock washer.

All are passivated for added protection against oxidation and corrosion. 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. 18 8 stainless steel washers have good chemical resistance and may be mildly magnetic. Apex fasteners square cone sems square cone sems offer compensation against vibration and thermal cycling.

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 are wider and thicker than most round washers making them good for distributing heavy loads. Size 4 40 6 32 8 32 10 32 7309. They may be mildly magnetic.

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. Square washers fit into slots and channels and have flat sides to keep them from rotating. A curved washer protects delicate surfaces while providing constant tension. Also known as square cone sems screws the washer rotates freely but is permanently attached.

Split ring lock washer sems inch. 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. 316 stainless steel washers have excellent resistance to chemicals and saltwater.

Length is measured from under the head. They prevent loosening from small amounts of vibration. This fastener is ideal for circuit board applications as well. Metric dimensions expressed in newton meters n m property class 5 8 screw material.