In architectural or exposed work, countersunk machined washers allow bolt heads to sit flush or slightly recessed, delivering a clean look. Machining ensures the right chamfer angle and depth for consistent seating, which stamping can’t reliably do.
This flush design looks sleek and ensures secure fastening in door frames, glass partitions, and furniture assembly. Their precision reduces stress at the countersunk edge, preventing material cracking and improving fatigue life.