carbon steel half threaded hexagonal Bolt with nut & spring, washer conforming to IS 1364 size M20 x, Q3, Carbon, Steel half threaded hexagonal bolt with nut conforming to IS, 1364 Size M24 x 75 mm Grade 10. 9, Mild steel half, threaded hexagonal bolt with nut conforming to IS 1364 size, M16 x 50 mm Grade 4. 6, Mild steel half threaded, Hexagonal Bolt with nut conforming to IS 1364 Size M18 x, 50 mm Grade 4. 6