A golf club head includes a club body having a crown opposite a sole, a toe end opposite a heel end, a back end, and a hosel. The golf club head also includes an adjustable weighting system positioned on the club body, the adjustable weighting system includes a single channel and a member that is received by the single channel and fastened to the club body, where a plurality of weights are coupled to the member. The golf club head can additionally or alternatively include a face angle adjustment system positioned on the sole, the face angle adjustment system includes a member that is removably received by the single channel and fastened to the sole, the member includes a first end member and a second end member, wherein the member is configured to be repositioned within the channel to adjust a resting face angle of the golf club head.

Apparatus and methods are described herein to provide a golf club, such as, for example, a putter, with a select loft angle and/or a select lie angle. In some embodiments, an apparatus includes a golf club having a golf club head, a hosel, and a hosel shim. The golf club head has a hosel shank and the hosel is configured to be coupled to the hosel shank. The hosel shim is configured to be coupled to the hosel to position the hosel at a select angle relative to the golf club head such that the golf club has a select lie angle. The hosel shim is further configured to limit rotational movement of the hosel relative to the golf club head such that the select lie angle is maintained when the hosel is coupled to the golf club head.

An adjustable shaft and hosel assembly allows for dependent and independent adjustment of a golf club's face angle, loft angle, and lie angle. The adjustable shaft and hosel assembly comprises a shaft sleeve, a hosel portion, and a ball joint, wherein the ball joint is located either on the shaft sleeve or the hosel portion and fits within, and is rotatable along various axes within, a socket.

In some embodiments, an adjustable putter includes a club body defining a substantially planar face for striking a golf ball, and a hosel including a hosel neck and a hosel adapter configured to be received within a hosel chamber defined by the club body. The hosel adapter defines an interior channel. The adjustable putter also includes a shaft attachable to the hosel neck, and a housing column. The hosel adapter is configured to rotate about the housing column so as to adjust a lie angle of the hosel neck, and the hosel chamber is configured to prevent rotation of the hosel adapter from increasing the lie angle beyond a predetermined value.

A high moment of inertia is enabled in a novel golf putter head in which also infinite adjustment of the lie angle and adjustment of total weight over a very wide range are enabled. The putter can be configured for either right-handed or left-handed players. The putter head has a cylindrical recess partially open through the top of the head and fully open to the rear of the head allowing the insertion of a cylindrical shaft receiver disc. The shaft can be of any allowed length and the lie angle can be from 26 degrees to 10 degrees from vertical. The mass properties of the putter head may be changed and adjusted by addition or removal of weights at the extreme toe and heel ends of the putter head.

A golf club head includes a body defining an interior cavity. The body includes a sole positioned at a bottom portion of the golf club head, a crown positioned at a top portion, and a skirt positioned around a periphery between the sole and crown. The body has a forward portion and a rearward portion. The club head includes a face positioned at the forward portion of the body. In some embodiments, the crown includes a lattice-like structure having thin regions surrounded by a web of relatively thicker regions. In some embodiments, the club head includes one or more stiffening tubes attached between the sole and the crown to improve the acoustic performance of the golf club head.

Embodiments of golf club heads comprising a club face with a variable thickness profile to increase face deflection and ball speed for a given CT are described herein. The variable thickness profile comprises a central region, the central transition, the hinge, the inner transition, and the hinge outer peak creating a variable face thickness with a topography that evokes the shape of a speaker woofer to produce non-linear bending, thereby producing greater strike face deflection and resulting ball speed for a given CT value. The variable face thickness profiles can further comprise a non-linear bending region comprising a first peak, a valley, and a second peak to non-linearly bend at other locations on the strike face thereby, producing greater strike face deflection and resulting ball speed for a given CT value.

A golf club head includes a club body having a crown opposite a sole, a toe end opposite a heel end, a back end, and a hosel. The golf club head also includes an adjustable weighting system positioned on the club body, the adjustable weighting system includes a single channel and a member that is received by the single channel and fastened to the club body, where a plurality of weights are coupled to the member. The golf club head can additionally or alternatively include a face angle adjustment system positioned on the sole, the face angle adjustment system includes a member that is removably received by the single channel and fastened to the sole, the member includes a first end member and a second end member, wherein the member is configured to be repositioned within the channel to adjust a resting face angle of the golf club head.

A golf club head including a crown defining the top surface of the club head and including a crown portion, a crown recess region formed in the crown portion and defined by a crown ledge and a bonding wall, and a crown insert disposed at least partially within the crown recess region. The size and uniformity of the junction between the crown insert and the bonding wall may be determined by measuring the dimensions of the junction at critical points on the club head.

A fixation assembly is provided for fixing a golf club shaft to a golf club head. The assembly includes a first bore integrated into the golf club head, the first bore having a first orientation fixation feature and a first axis of symmetry. The assembly also includes an adapter ring having an inner second bore and a second orientation fixation feature for mating with the first orientation fixation feature to fix an orientation of the adapter ring relative to the first bore. The second bore has a second axis of symmetry, and when the second orientation fixation feature is mated with the first orientation fixation feature, the first axis of symmetry is not colinear or parallel with the second axis of symmetry. Also provided is a system for fixing a golf club shaft to a golf club head.