(10) A formed circular washer designed for use with flat or oval head screws.
Designed for accommodating the heads of countersunk screws. It provides additional bearing area on the material being fastened and can be used to give a neat, finished appearance.
(53) A flat washer with significantly more surface area than a USS or SAE washer, but made from a thinner gauge steel than most flat washers.
Used where an extra wide bearing surface is required. Originally designed for auto body work, they are also used in sheet metal, plumbing, and electrical work.
(37) A thin, flat, circular washer with a centrally located hole which is approximately 6% wider than the hole of a like-sized metric flat washer. Generally manufactured in accordance with DIN Standard 9021
(100) A coiled, hardened, split circular washer with a slightly trapezoidal wire section, for use with metric screws. Generally manufactured in accordance with DIN Standard 127.
(147) A coiled, hardened, split circular washer with a slightly trapezoidal wire section.
Preferred lock washer for use with hardened bearing surfaces. Applies greater bolt tension per unit of torque. Provides a hardened bearing surface, creating more uniform torque control. Provides more uniform load distribution. Resists loosening cause d by vibration and corrosion.
(100) A hardened circular washer with twisted prongs or teeth protruding from the inside and/or the outer edges of the washer.
Preferred lock washer for use with hardened bearing surfaces. Applies greater bolt tension per unit of torque. Provides a hardened bearing surface, creating more uniform torque control. Provides more uniform load distribution. Resists loosening cause d by vibration and corrosion.Internal tooth are preferred when a finished appearance is crucial since the teeth are hidden under the head of the screw. External tooth offer greater locking efficiency since the teeth are on the largest radius and provide greater torsional resistance. Combination tooth are used where a larger bearing surface is desired, ...
