Overview
DIN 471 is a dimensional standard for external retaining rings used in industrial, mechanical, and power transmission applications. It defines ring dimensions, groove requirements, tolerances, and installation characteristics to support reliable shaft retention and assembly performance. The standard is commonly referenced together with material, hardness, and inspection standards depending on the application requirements. DIN 471 retaining rings are commonly manufactured from spring steel, stainless steel, and corrosion-resistant material options. When sourcing DIN 471 retaining rings, the standard alone may not fully define the product requirements. Additional specifications may include shaft diameter, material requirements, surface finish, corrosion protection, and certification requirements.