Image 1 of 1 5/8" Snap-in Pin $1.00 For mounting light fixtures to a Mafer Clamp. The hexagonal end snaps into the clamp, the other end is a standard 5/8" stud. Quantity: Add To Cart Added! For mounting light fixtures to a Mafer Clamp. The hexagonal end snaps into the clamp, the other end is a standard 5/8" stud.