Timco High Tensile Steel Set Screws / Bolts with Hex Nuts (Silver) - M6 x 30mm (140 Pack Bag) (630SNZB) These steel screws can be used as both a set screw adjoining objects with threaded cavities or as a traditional bolt when combined with the included nuts. Socket Size: 10mm Made from Grade 8.8 High Tensile Steel which is commonly thought of as structural strength steel making it suitable for heavy duty applications. These fully threaded dual purpose set screws can be used as both a traditional set screw which can hold surfaces together solely using the threaded shaft or as a traditional bolt which uses a bolt to clamp surfaces together. The flat point tip and head helps to reduce the chances of a scratch / damage to any other materials which come into contact with the set screw. Size: M6 x 12mm (8 Pack) M6 x 16mm (130 Pack) M6 x 16mm (8 Pack) M6 x 20mm (8 Pack) M6 x 25mm (6 Pack) M6 x 30mm (140 Pack) M6 x 30mm (4 Pack) M6 x 50mm (70 Pack) Larger Sizes Type: Stainless Bolts Only Zinc