supply of hexagon head screw m20x60-8.8 , hexagon head screw m20x60-8.8 to drg no. rdso cg-15067, alt.1... special cond ition : -hex. head screw threads should be formed by cold rolling process and thread p rofile shall confirm to is: 4218(part-4). -hex. head screw threads tolerance class shou ld be 6g (is: 1364,part-2/ is:4218, part-4) and to work in axle end threaded holes to a tol erance class of 6h (is:4218, part-4). -the items shall be of brand / make i) tvs of m/s sund ram fasteners (or) ii) unbrako or dfl of m/s deepak fasteners (or) iii) tuff of m/s pioneer nu ts and bolts. note: for make icf drg no t-0-2-619, alty---- [ warranty period: 30 months after th e date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]