The Mega Sawtooth Hanger is the largest and strongest sawtooth hanger commercially available. Unlike standard sawtooth hangers, which are intended for use on relatively light pictures, this sawtooth is rated to support 250 pounds.
A full 3 1/2" long, Mega Sawtooth Hangers are made from heavy 14 gauge steel (approximately 1/16" thick). They are supplied with four #8 x 1/2" screws, but longer screws can be substituted to insure the holding power.
Be certain that the wall nail or screw you use in conjunction with this sawtooth hanger is strong enough to support the weight of the object you are hanging, that it is in a wall stud or is otherwise secure in the wall, and that it fits securely on the teeth of the hanger.