SHEETtracs®
Bolts and Screws for Metal
The reliable assembly of thin sheets with pilot holes has always presented a problem for removable joints. For sheets thicker than 1 mm it used to be possible to apply common sheet metal screws but an increasing reduction of sheet thickness, due to the cost saving potentials, prevents this today. EJOT now developed a secure solution for the process reliable assembly of pre-punched sheet metal joints with less 1,5 mm thickness, the self-tapping EJOT SHEETtracs® screw. This fastening element also supports the implementation of individual light weight design strategies. For an example a reduction of the sheet thickness of casing walls of "white goods" became possible with the SHEETtracs® - an important factor for the weight and also cost optimization of this product category (enabled thinner sheet metal to be used thereby lowering overall cost of the whitegoods made possible by use of SHEETtracs® screws).
The EJOT SHEETtracs® features a 45° (30° / 15°) asymmetric flank angle and with less material displacement it creates a stronger female thread in the sheet. This increases the stripping torque level of the joint and enables multiple repeat assemblies. In the lower, tapered area of the screw, the flank angle is reversed, and the resulting through draught is formed mainly into fastening direction. The non-circular thread forming zone ensures easy, centered application and the raised thread areas ensure a secure penetration of the sheet material. The circular cross section in the upper, load bearing thread results in higher thread engagement in the sheet metal compared to non-circular thread geometries.
The EJOT SHEETtracs® is a self-tapping screw for reliable thin sheet metal joints with pilot hole. Various head styles and drives are available.
SHEETtracs® are self-tapping screws for reliable assembly of pre-punched sheet metal joints with less 1,5 mm thickness
Features & Benefits:
• Supports the implementation of individual light weight design strategies
• High strength of the screw joint due to the formed draught
• High vibration resistance
• Simple and safe assembly due to good alignment and low installation torque
• High stripping torque due to a robust female thread
• Circular thread cross section for maximized thread engagement
• Metric compatibility
The EJOT SHEETtracs® features a 45° (30° / 15°) asymmetric flank angle and with less material displacement it creates a stronger female thread in the sheet. This increases the stripping torque level of the joint and enables multiple repeat assemblies. In the lower, tapered area of the screw, the flank angle is reversed, and the resulting through draught is formed mainly into fastening direction. The non-circular thread forming zone ensures easy, centered application and the raised thread areas ensure a secure penetration of the sheet material. The circular cross section in the upper, load bearing thread results in higher thread engagement in the sheet metal compared to non-circular thread geometries.
The EJOT SHEETtracs® is a self-tapping screw for reliable thin sheet metal joints with pilot hole. Various head styles and drives are available.
SHEETtracs® are self-tapping screws for reliable assembly of pre-punched sheet metal joints with less 1,5 mm thickness
Features & Benefits:
• Supports the implementation of individual light weight design strategies
• High strength of the screw joint due to the formed draught
• High vibration resistance
• Simple and safe assembly due to good alignment and low installation torque
• High stripping torque due to a robust female thread
• Circular thread cross section for maximized thread engagement
• Metric compatibility
