hese screws are known for their high efficiency, corrosion resistant and tensile strength.These are also available with square neck, large button head etc. in various kinds of finishing. These can be manufactured in both slot head & socket head. Features: Range : Dia. M4 To M52 & 3/16" To 2". Standards: IS / BS / BSW / DIN / ASME / ASTM Grades: 8.8, 10.9, 12.9. Brands : Unbrako & Imported Brand also. Also available as per your specific requirements.