Product Description:
The Hexalobular Socket Pan Head Self Tapping Screw in DIN7500
standard incorporates a Torx drive and head design, tailored for
high torque and slip-resistant applications. This makes it
particularly well-suited for precision assembly in challenging
environments. It is commonly employed in the connection of aluminum
alloys, galvanized steel sheets, solar brackets, and communication
base stations.
Features:
Curved head with supporting surface at the bottom, providing
moderate load-bearing capacity, slightly protruding surface after
installation. The design of the plum blossom groove can achieve
high torque transmission, reduce the risk of slipping, and is
suitable for automated installation or high torque requirements.
Some models support anti-disassembly to enhance security. By
extruding plastic or thin metal plates to form internal threads,
material cracking can be reduced (especially suitable for brittle
plastics such as PC and PMMA). Cone or guide thread design reduces
initial installation resistance.
Technical Parameters:

d | M2 | M2.5 | M3 | (M3.5) | M4 | M5 | M6 | M8 | M10 |
P | 0.4 | 0.45 | 0.5 | 0.6 | 0.7 | 0.8 | 1 | 1.25 | 1.5 |
b | MIN | 25 | 25 | 25 | 38 | 38 | 38 | 38 | 38 | 38 |
dk | MAX | 4 | 5 | 5.6 | 7 | 8 | 9.5 | 12 | 16 | 20 |
MIN | 3.7 | 4.7 | 5.3 | 6.64 | 7.64 | 9.14 | 11.57 | 15.57 | 19.48 |
k | MAX | 1.6 | 2.1 | 2.4 | 2.6 | 3.1 | 3.7 | 4.6 | 6 | 7.5 |
MIN | 1.46 | 1.96 | 2.26 | 2.46 | 2.92 | 3.52 | 4.3 | 5.7 | 7.14 |
x | MAX | 1 | 1.1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3.2 | 3.8 |
style | T6 | T8 | T10 | T15 | T20 | T25 | T30 | T45 | T50 |
A | 1.75 | 2.4 | 2.8 | 3.35 | 3.95 | 4.5 | 5.6 | 7.95 | 8.95 |
t | MAX | 0.77 | 1.04 | 1.27 | 1.33 | 1.66 | 1.91 | 2.42 | 3.18 | 4.02 |
MIN | 0.63 | 0.91 | 1.01 | 1.07 | 1.27 | 1.52 | 2.02 | 2.79 | 3.62 |
Applications:
In the automotive manufacturing industry, the Hexalobular Socket
Pan Head Self Tapping Screw is widely utilized. This screw type
employs thread rolling technology to improve anti-loosening
properties, especially in connecting various aluminum alloy parts.
Unlike traditional screws, the Hexalobular Socket Pan Head Self
Tapping Screw does not require tapping teeth. Instead, it can be
directly squeezed and locked, providing a secure connection. This
technology is particularly beneficial for connecting points that
endure dynamic loads in industrial machinery like machine tools and
hydraulic systems.
Moreover, thread rolling technology is employed in the assembly of
new energy battery modules. By using these screws in lithium
battery brackets or metal shells, it helps prevent material
weakening that can occur with traditional thread cutting methods.