PRAD system PSolRutiAonDtoosl ystem Specification of corresponding standard blanks (for European market) DIN374 TYPE Main size designation and specification ① ② L ℓ ℓn ℓs Ds K ℓk metric unified (reference) M4×0.5 63 9 - - 2.8 2.1 5 M5×0.5 70 11 - - 3.5 2.7 6 M6×0.75 80 13 - - 4.5 3.4 6 M6×0.5 M8×1 5/16-24UNF 90 19 44 46 6 4.9 8 M8×0.75 80 19 39 41 6 4.9 8 M8×0.5 M10×1.25 3/8-24UNF 100 23 49 51 7 5.5 8 M10×1 90 19 44 46 7 5.5 8 M10×0.75 PRAD SYSTEM M12×1.5 M12×1.25 100 21 49 51 9 7 10 M12×1 M14×1.5 M14×1.25 100 21 49 51 11 9 12 M14×1 M16×1.5 5/8-18UNF 100 21 49 51 12 9 12 M16×1 M18×2 125 33 61 64 14 11 14 M18×1.5 110 24 54 56 14 11 14 M18×1 M20×2 140 33 69 71 16 12 15 M20×1.5 125 24 61 64 16 12 15 M20×1 M22×2 140 33 69 71 18 14.5 17 M22×1.5 7/8-14UNF 125 24 61 64 18 14.5 17 M22×1 M24×2 M24×1.5 140 27 69 71 18 14.5 17 M24×1 M26×1.5 140 27 69 71 18 14.5 17 M27×2 M27×1.5 140 27 69 71 20 16 19 M27×1 M30×2 1'1/8-12UNF M30×1.5 150 27 73 77 22 18 21 M30×1 TYPE:d TYPE:e PRAD-7 764