Tenders for Supply of 7/8 22.22 Mm Dia. Zinc Plated/Galvanised Lock Bolt With Collar, Grip No. 20 With Grip Range 31.75 -38.10 Mm. Drawing No. : Material And Specification : Rdsos Spec No.: Is/Rdso-Wd/0001:2022. Warra Nty Period: 30 Months After The Date Of Delivery