Section 5 AAC 38.075 - Minimum legal size for clams(a) Unless otherwise specified in this chapter, the minimum legal size for razor clams is four and one-half inches (114 mm) in length of shell.(b) The minimum legal size for butter clams is two and one-half inches (63mm) in greatest length of shell as measured by a straight line distance, not including the curvature of the shell.(c) The minimum legal size for littleneck clams is one and one-half inches (38mm) in greatest length of shell as measured by a straight line distance, not including the curvature of the shell.Eff. 9/19/90, Register 115; am 5/8/98, Register 146