Screws and grub screws are fastenrs which work on opposite principle of machine screws or bolts screws are widely used where axial torsional and vibrational holding power is required available with different end points flat material used are alsi 304 aisi 316 size ranges from m5 to m12 3/16 to 1/2 in diameter and length of 5mm to 30 mm these are generally used in collars pulleys gears bearings shafts etc
