supply of item 1)bolts m.s. black hex head round body with hex nuts m.12 x 65 to is 1363/1984. item 2)bolt ms black hex head round body with hex nuts m16 dia x 50mm long to is: 1363/1984 (first revision) part 1&3. item 3)bolts ms black hex.head round body with hex.nuts m20 x 90 mm.to is.1363/84 part 1 & 3. property class of bolt is 4.6 and as that of nut is 4.item 1)bolts m.s. black hex head round body with hex nuts m.12 x 65 to is 1363/1984. item 2)bolt ms black hex head round body with hex nuts m16 dia x 50mm long to is: 1363/1984 (first revision) part 1&3. item 3)bolts ms black hex.head round body with hex.nuts m20 x 90 mm.to is.1363/84 part 1 & 3. property class of bolt is 4.6 and as that of nut is 4.,bolts m.s. black hex head round body with hex nuts m.12 x 65 to is 1363/198 4. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] , bolt ms black hex head round body with hex nuts m16 dia x 50mm long to i s: 1363/1984 (first revision) part 1&3. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] , bolts ms black hex.head round body with hex.nuts m20 x 90 mm.to is.1363/84 part 1 & 3. property class of bolt is 4.6 and as that of nut is 4. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]