supply of hex. head bolt & nut - m12 x 65 mm, product grade c,m.s. black matl.& specn : is: 1363 (part - 1) / 2023 (6th rev.) or latest and is: 1363 (part - 3) / 2018 (5th rev.) or latest, property class 4.6 for bolt and property class 5 for nut. , hex. head bolt & nut - m12 x 65 mm, product grade c,m.s. black matl.& specn : is: 1363 (part - 1) / 2023 (6th rev.) or latest and is: 1363 (part - 3) / 2018 (5th rev.) or latest, property class 4.6 for bolt and propert y class 5 for nut. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 la cs ] ]