supply of stainless steel 304 grade bolt hexagonal head fully threaded of size m12 x 50 mm with nylock nut, two flat washers and one spring washer conforming to is 1367:part 14:sec 1:2023 or latest. material should be supplied in assembled condition. standard quality: din 933 for screw, din 982 for nylock nut, din 125 for flat washer and din 127 for spring washer. all items of grade a2-70 (ss 304). accepted make/brand: tvs, dfl-unbrako, and tuff only.stainless steel 304 grade bolt hexagonal head fully threaded of size m12 x 50 mm with nylock nut, two flat washers and one spring washer conforming to is 1367:part 14:sec 1:2023 or latest. material should be supplied in assembled condition. standard quality: din 933 for screw, din 982 for nylock nut, din 125 for flat washer and din 127 for spring washer. all items of grade a2-70 (ss 304). accepted make/brand: tvs, dfl-unbrako, and tuff only.,stainless steel 304 grade bolt hexagonal head fully threaded of size m12 x 50 mm with n ylock nut, two flat washers and one spring washer conforming to is 1367:part 14:sec 1:2023 or latest. material should be supplied in assembled condition. standard quality: din 933 for screw, din 982 for n ylock nut, din 125 for flat washer and din 127 for spring washer. all items of grade a2-70 (ss 304). a ccepted make/brand: tvs, dfl-unbrako, and tuff only. [ warranty period: 30 months after the dat e of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] workshop carriage stores/kgp, west bengal 3168.00 set