Top quality, high tensile 6mm / M6 crankcase side stud in zinc plated, high tensile steel. These are 33mm long with 12mm of thread either end, with a 9mm stop in the middle.
 These are classed as standard length but are a couple of mm longer than the Indian type.
 
For a full chaincase side, you need 14 of these and 2 x M8 studs.