Stainless steel butterfly screw Z037339

Butterfly screws GN 433 are a practical solution for quick and tool-less fastening of elements. Made of precision cast stainless steel, available in two versions – AISI CF-8 NI and AISI 316 A4 – they ensure durability and corrosion resistance. The ergonomic shape and recessed hub facilitate grip and operation, resulting in comfortable work for both the installer and the end user.

Construction and materials

GN 433 screws are characterized by careful execution with high-quality stainless steel. Two material versions are available:

• AISI CF-8 NI: Standard stainless steel, providing good corrosion resistance under typical conditions.
• AISI 316 A4: Stainless steel with increased resistance to aggressive environments, including the action of sea salt, chemicals and high temperatures. This version is particularly recommended for outdoor or chemical industry applications.

The surface of the screws is sandblasted and matte (MT), which provides an aesthetic appearance and a secure grip.

Applications

Butterfly screws GN 433 find wide application in various industries, including:

• Mechanical engineering: Mounting of covers, access panels and other machine elements.
• Devices: Quick fastening of housing elements of electrical and electronic devices.
• Furniture: Assembly of furniture elements, especially where frequent disassembly and reassembly are required.
• Construction: Mounting structural elements in places requiring easy access.
• Food and pharmaceutical industries: Due to the hygiene of stainless steel, GN 433 screws are ideal for use in these industries.

Thanks to their versatility, these screws will work both in professional applications and in home workshops. Their ease of use allows for quick assembly without the need for additional tools.

Choosing the right size

GN 433 butterfly screws are available in various thread sizes (M4, M5, M6, M8) and lengths (6mm - 30mm). The selection of the appropriate size depends on the thickness of the fastened elements and the required tightening torque. Different combinations of dimensions d1, d2, l and b allow you to adapt the screw to specific mounting needs. It is worth paying attention to the height h1 and h2 when selecting a screw for a specific application.