
GBP 57 Comparison table spanner size (A) / thread of Torx® and Torx Plus® screws The dimension A is the same for Torx® (designation T or TX) and Torx Plus® (designation IP). Torx internal drive Torx external drive A A A Designation mm metric screws Designation mm metric screws Designation mm metric screws Grub screws TX 5 1.42 - M 1.8 TX 25 4.43 M 4.5 - M5 E4 3.86 M3 M5 TX 6 1.67 M2 TX 27 4.99 M 4.5 - M5 - M6 E5 4.75 M4 M6 TX 7 1.99 M2 TX 30 5.52 M6-M7 E6 5.74 M 4; M 5 M7 TX 8 2.31 M 2.5 TX 40 6.65 M7-M8 E7 6.20 - M8 TX 9 2.50 M3 TX 45 7.82 M 8 - M 10 E8 7.52 M 5; M 6 M 10 TX 10 2.74 M 3 - M 3.5 TX 50 8.83 M 10 E 10 9.42 M 6; M 8 M 12 TX 15 3.27 M 3.5 - M 4 TX 55 11.22 M 12 E 12 11.70 M 8; M 10 M 14 TX 20 3.86 M 4 - M5 TX 60 13.25 M 14 E 14 12.90 M 10; M 12 M 16 E 16 14.71 - M 20 A E 18 16.64 M 12; M 14 - E 20 18.41 M 14; M 16 M 24 Torx® / Torx Plus® Torx Plus® is a further development of the Torx® profile. The larger contact surfaces of Torx Plus® tools and the Torx Plus® screw as well as the improved angle of drive force enable higher torques and extend the working life of the tool and screw. Torx Plus® tools cannot be used on Torx® screws. Screw Screw Tool Tool Torx® and Torx Plus® are the registered trademarks of Acument Intellectual Properties, LLC, an Acument Global Technologies, Inc. company. Conversion table inches to millimetres inches mm inches mm inches mm inches mm inches mm inches mm 1/16 1.588 1/8 3.175 7/32 5.556 3/8 9.525 9/16 14.288 7/8 22.225 5/64 1.984 9/64 3.572 1/4 6.350 7/16 11.113 5/8 15.875 1 25.400 3/32 2.381 5/32 3.969 9/32 7.144 1/2 12.700 3/4 19.050 Width across flats of hexagon socket screws Drive size mm 0.7 0.9 1.3 1.5 2 2.5 3 4 5 6 7 8 10 12 14 17 19 22 24 27 32 36 M 1.6 M 16 M 20 M 24 DIN EN ISO 4762 - - M 1.4 M 2 M 2.5 M3 M4 M5 M6 M8 - M 10 M 12 M 14 M 18 M 22 M 27 M 30 M 33 M 36 M 42 M 48 DIN 6912 M 16 (with pilot pin) - - - - - - M4 M5 M6 M8 - M 10 M 12 M 14 M 18 M 20 - - - - - - M 16 M 20 DIN 7984 - - - - M3 M4 M5 M6 M8 - M 10 M 12 M 14 M 18 M 22 M 24 - - - - - - M 14 M 18 M 22 DIN EN ISO 10642 - - - - M3 M4 M5 M6 M8 M 10 - M 12 M 16 M 20 M 24 - - - - - - - DIN EN ISO 4026 / 4029 DIN EN ISO 4027 DIN EN ISO 4028 M 1.4 M 1.6 M 1.8 M2 M 2.5 M3 M4 M5 M6 M8 M 10 M 12 M 14 - M 16 M 18 M 20 M 22 M 24 - - - - - - - - i 1229