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Fastener washer types
- Flat Washers
- Offer a bolt or screw a wider bearing surface that will disperse the load weight to a greater surface area and ensure that the nut or bolt is pressed up against a smooth surface thus reducing the chances of the fastener loosening over time.
- Cup Washers
- Give the ability to add a finished look to a project where the material is too hard for the countersunk screw head to countersink itself as well as preventing screw heads from pulling through a pilot hole that is larger than the the head of the screw.
- Fender Washers
- Are similar in shape and performance to a flat washer except the outside diameter is much larger in proportion to the center hole.
- Split Lock Washers
- Split and bent to create a spring-like effect when fully compressed provide greater bolt tension per unit of applied torque providing protection against the fastener loosening from vibration
- Tooth Lock Washer
- Internal tooth lock washers work by sinking their teetch into to the head of the fastener and the material that is being fastened into creating a strong bond that keeps the screws and bolts in place