Square Cone Lock Washer

They accept a high clamp load while still maintaining spring action.

Square cone lock washer.

A curved washer protects delicate surfaces while providing constant tension. Split ring lock washer sems metric. 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. 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.

Material codes steel zinc sz stainless steel ss all. They may be mildly magnetic. 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. Length is measured from under the head.

Also known as square cone sems screws the washer rotates freely but is permanently attached. Split ring lock washer sems inch. Split lock washer sems are preferred when the sems are used with hardened bearing surfaces since the. Size 4 40 6 32 8 32 10 32 7309.

All are passivated for added protection against oxidation and corrosion. 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. This fastener is ideal for circuit board applications as well. 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. Square washers fit into slots and channels and have flat sides to keep them from rotating. 316 stainless steel washers have excellent resistance to chemicals and saltwater. Metric dimensions expressed in newton meters n m property class 5 8 screw material.