Meridyen YHB Self-Drilling Screw 4.2×38 mm (Pack of 500)
Maximum Reliability in Very Long-Range Thin Metal and Thick Frame Fastening
The Meridyen YHB (Countersunk Head) Self-Drilling Screw 4.2×38 mm is the longest and reinforced diameter fastener designed for securing materials such as thin metal sheets, sheet metal panels, and light steel profiles to each other or to very thick metal/wood surfaces. The 4.2 diameter offers higher tensile and shear strength compared to the standard 3.9 diameter, increasing connection security. The 38 length (3.8 cm) is ideal for applications requiring extended connection depth, especially for fastening metal to thick wooden frames, fastening through thicker insulation materials, or in areas where thickness is significant. Its self-drilling (smart screw) design completely eliminates the need for pre-drilling.
Purpose and Key Features
The primary purpose of the Meridyen YHB Self-Drilling Screw is to join two metal parts or a metal part to a thick frame at high speed and with minimal effort, in the deepest and most secure way.
Drill Point: The drill point at the tip of the screws allows for easy penetration through metal sheets and profiles up to 2-3 mm thick without requiring pre-drilling.
Half Countersunk Head (YHB): The underside of the head is flat, but the top surface is slightly domed. This design ensures that the head sits aesthetically and flush on the surface after connection, and also provides a perfect fit to the mounting surface.
Reinforced Diameter (4.2): The 4.2 diameter can withstand higher torque values and provides a stronger connection compared to 3.9.
Size and Application Area:
4.2 Diameter x 38 Length: The 4.2 diameter provides a strong grip, while the 38 length is designed for applications requiring extra long connection depth. This is particularly important for fastening metal to thick structural elements.
Surface Coating:
Typically coated with zinc plating to provide protection against rust and corrosion.
Areas of Use and Industries
This screw is used in all metalworking, construction, and assembly applications that require fast fastening, strong grip, and extra long connection depth.
Sector of Use
Application Areas
Light Steel Construction
Deep fastening of thin metal sheets or plates to relatively thick box profiles and other steel frames.
Construction and Renovation
Mounting metal cladding or auxiliary profiles to the load-bearing frame through medium-thick insulation materials (e.g., 10-15 mm thick).
Metal Processing and Manufacturing
Internal assembly of metal panels, cabinets, and device enclosures with significant thickness.
Special Assembly Works
Secure and permanent attachment of metal to deeper wooden or PVC joinery.
Product Description
The Meridyen YHB Self-Drilling Screw, with a diameter of 4.2 and a length of 38, is specifically designed for deeper and more reliable joining of thin sheet metal and metal panels. Its 4.2 diameter offers higher strength. The self-drilling design eliminates the need for pre-drilling and shortens assembly time. The half countersunk head (YHB) provides an aesthetic and flush appearance after assembly, while its zinc coating enhances corrosion resistance. With its pack of 500 units, it is an ideal, essential fastener for high-volume metal assembly jobs requiring deep connections.
