Anti-rotation washers feature serrations that extend either radially inward and/or outward to grip the bearing surface. This washer type serves effectively as a lock washer when paired with a soft material, like aluminum or plastic. All variations meet ASTM A153 standards.
Prevents spinning after installation
Complies with ASTM A153
Constructed from high-strength steel
Mechanically galvanized surface
High-quality Hillman fasteners
What customers say
Buyers report that these washers perform well with carriage bolts, especially highlighting their compatibility with 5/16th carriage bolts. They fit seamlessly, boast a professional look, and are affordably priced. However, feedback about their thickness is varied, with several users noting they measure only 0.049 thick.
