TMA
SELF-TAPPING SCREWS FOR METALS
Download the technical specifications
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DownloadTMA
SELF-TAPPING SCREWS FOR METALS
TMA is a fastening solution for light alloys. It’s many, special characteristics give designers the confidence that these self-tapping screws are truly suited to the material for which they are intended. The contoured thread root ensures low installation torque, and the special shape of the threading itself results in high resistance to pull-out forces.
Technical data
SPECIAL CONTOURED ROOT
Reduced effort. These screws facilitate material flow when tapping the hole. Reduced installation torque. Increased pull-out torque. Increased twist-out force.
SPECIAL SHAPE OF THREAD TOOTH
Reduces radial force. Maximized support surface. High pull-out force. High clamping force. High twist-out force.
BENEFITS
- Tapping without chips.
- Simple, reliable installation in punched, drilled, extruded and cast holes.
- Screw reuse.
DESIGN GUIDE
- Ductile materials ≤ 50 HV.
- Semi-hard materials = from 51 to 75 HV.
- Hard materials = from 76 to 100 HV.
EXTRUDED HOLE
PUNCHED HOLE
