Timco Stainless Steel Cap Socket Screws (Silver) - M6 x 20mm (10 Pack Bag) (620CAPSSX) These cap head socket screws have an abundance of clamping strength and are exceptionally easy to install using an allen key in the internal hex drive. Hex Recess: 5mm Made from A2 Stainless Steel which means these allen key screws have impeccable corrosion resistance properties and can be used in exposed outdoor applications. These fully threaded socket screws are incredibly versatile but are often used in industrial applications due to their remarkable clamping strength and professional looking finish. The hex key socket of these screws means that they are much easier to tighten / loosen in confined spaces than traditional bolts but preserve much of the same clamping strength. Size: M5 x 16mm (500 Pack) M5 x 16mm (10 Pack) M5 x 20mm (500 Pack) M5 x 20mm (10 Pack) M6 x 16mm (200 Pack) M6 x 16mm (10 Pack) M6 x 20mm (200 Pack) M6 x 20mm (10 Pack) M6 x 25mm (200 Pack) M6 x 25mm (10 Pack) M8 x 20mm (200