tender for thread repair of journal opening covers in various mills; 1 hss drill bit 24.75mm for 3 nos 2 hss tap set 24.75mm for 3nos 3 helicoil insert m 24 to suit the tapped hole material ss 304, 4 thread repair kit m24x3mm 5 charges for drilling badly damaged thread portion of size m24, 34 nos. in 1 no. journal opening cover of any mill in unit iii.i) no. of holes 34. ii) depth of thread portion 50mm, using drill bit size hss 24.75mm & magnetic drilling machine. charges for 10 no. drilling m24 holes. including consumable and t&ps. 6 charges for making new thread using hss tap set of size 24.75mmx3mm, pitch of 3 nos. 1, 2 & 3 in the above drilling hole of opening cover to a depth of 50mm, qty 34 nos. including consumable and t&ps. 7 charges for fixing ss 304 helicoil insert in the taped hole m24.75, qty 34nos in one journal opening cover. including consumable and t&ps. 8 hire charges for 2nos magnetic drilling machine per journal opening cover thread repair work. 9 scaffolding arrangement for carrying the above works items (5) to (7). please enable macros to view boq information