DIN 34800:2022 Small Flange External Hexalobular Torx Bolt uses an external Torx drive with a small flange, making it suitable for joints requiring higher torque transfer, compact head size, and a stable bearing surface.
The external Torx head improves tool engagement and reduces slipping risk, while the small flange adds bearing area in limited space. Applications include automotive components, electromechanical equipment, precision brackets, and automated assembly lines.
Torx size, flange diameter, thread length, and finish should be confirmed. For automated assembly, batch consistency, drive-head forming quality, and feeding compatibility are important for improving production efficiency.

Dimensions unit: mm
| Thread size | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | ||||
| d | ||||||||||||||
| P | Pitch | Coarse teeth | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | ||
| Fine Teeth 1 | / | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 2 | 2 | ||||
| Fine Teeth 2 | / | / | / | / | 1 | 1.25 | / | / | 1.5 | 1.5 | ||||
| b | Reference value | 35 | 40 | 50 | 65 | 80 | 80 | 80 | 80 | 80 | 80 | |||
| dc | Max.=Nominal | 7.88 | 8.88 | 10.88 | 13.73 | 16.83 | 18.83 | 21.93 | 25.09 | 28.04 | 31.09 | |||
| ds | Max. | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | |||
| Min. | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 17.73 | 19.67 | ||||
| dt | Nominal | 4.6 | 5.55 | 7.3 | 9.2 | 10.95 | 12.65 | 16.4 | 18.15 | 21.85 | 21.85 | |||
| k | Max.=Nominal | 4.5 | 5.5 | 6.5 | 8.2 | 10 | 12 | 14 | 16 | 18 | 20 | |||
| Min. | 4.25 | 5.25 | 6.25 | 7.95 | 9.75 | 11.75 | 13.75 | 15.75 | 17.75 | 19.75 | ||||
| c | Max. | 1.3 | 1.7 | 1.8 | 2.5 | 3.2 | 3.9 | 4.2 | 5.1 | 5.2 | 6.5 | |||
| Min. | 1.05 | 1.45 | 1.55 | 2.25 | 2.95 | 3.6 | 3.9 | 4.8 | 4.9 | 6.2 | ||||
| k1 | Min. | 1.19 | 1.25 | 1.7 | 2.08 | 2.54 | 3.28 | 3.99 | 4.34 | 5.89 | 5.89 | |||
| External hexagonal dimensions | E5 | E6 | E8 | E10 | E12 | E14 | E18 | E20 | E24 | E24 | ||||
| Thread length b | - | - | - | - | - | - | - | - | - | - | ||||
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Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010.
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