Adjustable loft golf club

In a golf club having a club head that is adjustably connected to a hosel for changing the loft angle of the club, an improvement comprising:

• said hosel having a lower end portion that includes a transverse bolt receiving opening having first and second ends, and an annular, substantially flat, metal, first end surface at the first end of said opening;
• said club head having a heel, an internally threaded bolt receiving opening in said heel extending into said club head substantially lengthwise of the club head, and an annular, substantially flat, metal, heel surface surrounding the bolt receiving opening in said club head;
• a flat washer positionable axially between the metal first end surface on said hosel and the metal heel surface on the club head, said washer having a center opening and opposite sides;
• a bolt having a head, a threaded shank extending from the head, and a bolt axis, said shank being fittable through the bolt receiving opening in the hosel, and through the center opening in the washer, and being threadable into the bolt receiving opening in the club head,
• wherein the club head can be rotated about the bolt axis to provide a desired loft angle and then the bolt can be tightened to connect the club head to the hosel at the selected loft angle, wherein the washer is made from a material that is softer than the metal, first end surface on the hosel and is softer than the metal, heel surface on the club head, and wherein the metal, first end surface on the hosel and the metal, heel surface on the club head are rough surfaces having grains that penetrate into the opposite sides of the washer when the bolt is tightened, for holding the club head against rotation relative to the hosel.