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Button Head Screws M4

 (3 product groups)

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Button Head Seal Screws

This range of Seal Screws features a button head with a hexagonal drive. Hexagonal drives are ideal for precision assembly and are used where less surface area is available. They are made from Stainless Steel that provides good resistance to corrosion and is slightly magnetic..

Seal screws are a type of fastener designed with an o-ring to provide secure bi-directional protection against contaminates such as gases and fluids in various applications, minimising the risk of damage to sensitive equipment. They prevent the entry of water, dust, or other contaminants, ensuring a secure, reliable connection.

Seal screws are used in threaded and non-threaded holes in applications such as cabinets or used in the automotive and electric industries. Please note: Our seal screws are designed for use in applications where sealing properties are required. It could be confused with standard fasteners, these do not require sealing properties and with an O-ring you will not get a sealing property like you get with seal screws and may damage the ring.

  • Designed with an o-ring to provide secure bi-directional protection against contaminates.
  • Prevent the entry of water, dust, or other contaminants, ensuring a secure, reliable connection.
  • Used in threaded and non-threaded holes in applications such as cabinets or used in the automotive and electric industries.
Material: 316 Stainless Steel, 303 Stainless Steel Series Code: SRP0174

Captive Screws - Button Head

Captive Screws are fasteners designed to remain attached to the component they are securing, even when fully loosened, providing convenience, security and ease of use in a variety of applications. They are a popular choice for applications where screws need to be removed frequently or where safety is a concern, as these screws will stay firmly in place and will not loosen from the assembly.

This range of Captive Screws has a button head and a Torx drive. Torx drives provide a positive-engaging, fast-locating technique for transmitting drive torque with less necessary downward pressure. They are an excellent fitting option for panels with non-threaded holes when used in conjunction with our threaded captive washers. They are used to comply with Machinery Detective 2006/42/EC - typically to ISO 14583, which requires fasteners to stay attached to fixed guards or applications when they are removed.

The screws are made from Stainless Steel, which is corrosion resistant and slightly magnetic, and you can find a group of screws with a blackened finish and others without.These screws are commonly used in electronics, industrial machinery, cabinets, panels and medical devices. Please keep in mind that because these screws have a smaller shank diameter, they should not be tightened to the suggested torque for an identical screw with the same thread size.

  • Torx drives provide a positive-engaging, fast-locating technique for transmitting drive torque with less necessary downward pressure.
  • Used to comply with Machinery Detective 2006/42/EC - typically to ISO 14583.
  • Designed to remain attached to the component they are installed in, even when fully loosened.
Material: Blackened Stainless 316, Blackened Stainless 303, 316 Stainless Steel, 303 Stainless Steel Series Code: SRP0149.A2

Vented Screws - Socket Button Head

Vented screws are fasteners with a hole drilled through the middle that allow gases trapped at the bottom of a blind threaded hole to escape through the core and provide airflow within an application. The screws are a common option for HV and UHV systems because their centre vent feature reduces virtual leakage from high vacuum systems.

This range of Vented Screws features a socket button head with a hexagonal drive. Hexagonal drives are suitable for precision assembling and when there is limited surface area. They are made from Stainless Steel.

  • Their centre vent feature reduces virtual leakage from high vacuum systems.
  • Hexagonal drives are suitable for precision assembling and when there is limited surface area.
  • Suited for sealed enclosures, housings, and machinery.
Material: 316 Stainless Steel, 304 Stainless Steel Series Code: SRP0094.A2