Also known as a set screw, grub screws have no head but numerous uses. Driven by a hex Allen key they have a depression or ‘cup’ on the opposite end, known as plain cup point. Made to DIN 916 (ISO 4029) This set contains a comprehensive selection of the most popular lengths of M3, M4 and M5 (3mm, 4mm & 5mm thread diameter) screws. A2-70 stainless steel, also known as 304 or 18/8 grade has great weather resistance and longevity. It can be used in all outdoor conditions apart from where consistent exposure to either salt water or sewerage is expected.
