Hexagon nuts with flange; Product grade A

This technical specification defines the geometric requirements and dimensional tolerances for hexagonal nuts featuring integral flanges, classified under product grade A. The document establishes a unified framework for manufacturers and suppliers to ensure compatibility with corresponding bolts and threaded components across various industrial applications. Key parameters include the width across flats, wrenching face dimensions, thickness of the flange, and chamfering specifications, all measured in metric units. The design incorporates a smooth, flat bearing surface beneath the nut head to distribute load evenly and prevent damage to the connected parts during assembly. These components are intended for general engineering use where standard hexagonal heads are employed but an integrated washer-like base is required to eliminate the need for a separate washer. The specification addresses material performance, surface finish, and marking conventions to facilitate quality control and traceability throughout the supply chain. By adhering to these guidelines, industries can achieve consistent interchangeability and reliable mechanical performance in fastening systems.