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We are proud to stock a large variety of screws here at Essentra, featuring many different types of screws covering a multitude of applications. Our diverse offering includes machine screws, socket head cap screws, binding screws and more.
Our range features screws made of different materials such as plastic, metal and steel. We understand the importance of head type and so have packed our range with head types such as socket, countersunk, hex head and many more types of screw.
Due to the sheer amount of screw types, drives and thread choices, we have put together a collection of guides to help you make the right choice over on our Knowledge Centre, including:
What are Screw Heads, Drives & Threads?
Socket Screws Explained
A Guide to Thumb Screws
What is a Set Screw?
A Guide to Machine Screws
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.
Captive Screws are secure joint fasteners designed to remain attached to the component they are installed in, 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. These screws are commonly used in electronics, industrial machinery, cabinets, panels and medical devices.
This range of Captive Screws features a countersunk head and hexagonal drive. Hexagonal drives are ideal for precision assembly and are used where less surface area is available. They are used to comply with Machinery Detective 2006/42/EC - in general, ISO 1207, 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. 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.
This range of sealing screws has a pan head with three options: Torx drive, Philips drive and Slotted drive. Torx drive screws provide a positive, fast engagement that transmits torque with less downward pressure. Phillips drive screws can withstand high torque, making them a good choice for applications that require a tight fit and make it easy to remove the screw, even if it has been driven in tightly. Finally, slotted drive screws have a lower torque capacity than other drive types, such as Phillips or Torx.These screws incorporate an O-ring which is compressed and squeezed between the head and the mating component to complete a more secure seal. They are manufactured from stainless steel, which provides good corrosion resistance and is slightly magnetic.
This seal screws with a pan head 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. Clearance holes are recommended for optimal sealing performance (see measurements below). Clearance hole depth is 2-3 times the thread pitch; threads are metric coarse pitch.
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 countersunk machine 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.
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 hexagonal head. They are made from Stainless Steel.
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.
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 Shoulder Screws features a cap head with a hexagonal drive. Hexagonal drives are suitable for precision assembling and when there is limited surface area and the precision shoulder allows accurate assembly. They are made from Stainless Steel.
Anu-Lok Cap Head Captive Screws are intended to offer a secure and vibration-resistant attachment, while remaining permanently connected. Features a cap head design that enables simple torque application with tools like hexagonal keys. Anu-Lok 180 (AnuLok) is a reusable nylon patch that works like to a nylon nut. During installation, the nylon patch contracts to fill the gap within the threads.
The specialised retention mechanism prevents complete detachment from the assembly, due to vibration or mechanical stress, while allowing for repeated fastening and unfastening. This feature is useful in applications requiring maintenance or regular access. Applications include electronic enclosures, machinery guards and structural components.
Please note: These screws have a reduced diameter shank and should not be tightened to the recommended torque for an equivalent machine screw of size d1.
Anu-Lok Cap Head Seal Screws have a cap head design for better torque control and feature a built-in sealing mechanism that is designed for holding a gas-tight seal. Made of stainless steel, which has high corrosion resistance and is somewhat magnetic.
These screws utilize Anu-Lok 180 (AnuLok), a reusable nylon patch that works like a nylon nut. During installation, the nylon patch contracts to fill the gap within the threads, creating a holding mechanism that prevents the screw from detaching due to vibrations or mechanical stress.
With a hexagonal socket head, they can be easily tightened or loosened using an hexagonal wrench or key.
The Anu-Lok Cap Head Shoulder Screws feature a cylindrical shoulder that distinguishes the screws head from its threaded section. This shoulder is precisely machined to serve as a bearing surface for the screw head.
These screws utilise Anu-Lok 180 (AnuLok), a reusable nylon patch that works like a nylon nut. During installation, the nylon patch contracts to fill the gap within the threads, creating a holding mechanism that prevents the screw from detaching due to vibrations or mechanical stress.
Equipped with a hexagonal socket head, these screws can be easily tightened or loosened using a hexagonal wrench or key.
Torx Keys, also known as Hex Key or more commonly as an Allen Key or Allen Wrench, are used to tighten and loosen Socket Head Bolts. Our S Shaped Allen Keys are made from Hardened Steel that has been Zinc-Plated, providing excellent oxidation properties.
Torx Allen Key size options: 4.0mm and 5.0mm.
These Shoulder bolts, also known as shoulder screws, are a type of fastener with a plain section shoulder in between the head and threaded portion of the screw. The shoulder part is machined to a precise tolerance for locating, fastening, or rotating parts.
It decreases stress concentration and lowers the likelihood of damage or failure. It is also durable, corrosion-resistant, and nonmagnetic. It can handle high loads, vibrations, and harsh environments.
Its hexagonal-shaped head offers a comfortable and stable grip for tightening and loosening the bolt. The hex head shape enables simple torque application with a wrench or socket, delivering a tight and solid connection. It is widely utilised in various sectors, including automotive, industrial, electronics, and construction.
Headless Shoulder Screws are designed for applications that require a smooth bearing surface, without an exposed screw head. Unlike a standard shoulder screw, it features a cylindrical body with a shoulder and a threaded end, but lacks a head. This design allows for secure attachment, while maintaining a clean and compact appearance.
Their headless design makes them ideal for use in constrained spaces, where a standard screw head would interfere with surrounding components. The large unthreaded portion of the screw ensures tight tolerances, which is essential for applications that require precision.
Often used in conjunction with bearings and bushings, to provide reliable support and enable smooth motion.
These Shoulder Screws, also known as shoulder bolts, are a type of fastener with a cylindrical shoulder that separates the screw's head from its threaded part. The shoulder is machined to a precise tolerance and serves as a bearing surface for the screw head.
Shoulder Screws are useful in situations that call for a mounting pin, dowel, joint, shaft, or sliding action. It is somewhat magnetic, strong, and corrosion resistant, but not in very harsh conditions.
This range of Shoulder Screws features a hexagonal socket head, which allows them to be easily tightened or loosened with an Allen wrench or hex key. They also feature a non-smooth head, which aids in gripping. These screws are suitable for electronics, machinery and automotive applications.
These Pan Head Shoulder Screws, also known as pan head shoulder bolts, are a type of fastener that consists of a cylindrical shaft with a pan head at one end and a shoulder at the other. The shoulder is machined to a precise tolerance and serves as a bearing surface for the screw head.
Shoulder Screws are useful when a mounting pin, dowel, joint, shaft, or sliding motion is required. It is sturdy and corrosion-resistant, but not in really hard conditions.
This range of Shoulder Screws features a pan head that is slightly domed and a flat bearing. It is suited for low-profile applications and has an aesthetically attractive appearance. Easy to install or remove using slotted screwdrivers. These screws suit electronics, medical devices, machinery and automotive applications.
These Shoulder Screws, often known as shoulder bolts, are a kind of fastener having a cylindrical head and a threaded shank. They feature a shoulder that runs from the head to the shank which is machined to a precise tolerance. Shoulder screws are commonly used to connect two components, with the shoulder acting as a bearing surface.
Shoulder Screws are appropriate for applications requiring a mounting pin, dowel, joint, shaft, or sliding motion.
This range of Shoulder Screws features a slotted head, which allows them to be driven with a slotted screwdriver. They are magnetic and have excellent shear resistance, although they corrode somewhat more easily than conventional shoulder screws. These screws are suitable for electronics, machinery, automotive and construction applications.
These brass pad thrust screws are designed to provide a controlled bearing surface for components that must be precisely positioned and attached while minimising axial movement or damage to the mating surface. It guarantees smooth, controlled action while reducing friction and wear.
As the screw turns, the brass pad applies pressure on the surface it touches, allowing for controlled movement or adjustment. It provides a secure and stable point of contact and is extremely wear-resistant.
It is simple to install under pressure, softly clamp or push threaded spindles, shafts, or surface-treated parts, and place more delicate parts. It is frequently utilised in mechanical assembly, precise instrumentation, calibration, and alignment.
These plastic pad thrust screws are designed to provide a controlled bearing surface for components that must be precisely positioned and attached while minimising axial movement or damage to the mating surface. It guarantees smooth, controlled action while reducing friction and wear.
As the screw turns, the plastic pad applies pressure on the surface it touches, allowing for controlled movement or adjustment. It provides a secure and stable point of contact and is extremely wear-resistant.
It is simple to install under pressure, softly clamp or push threaded spindles, shafts, or surface-treated parts, and place more delicate parts. It is frequently utilised in mechanical assembly, precise instrumentation, calibration, and alignment.
Low Head Cap Screws, made from PEEK, provide exceptional mechanical strength, chemical resistance and thermal stability.
The low head profile is ideal for assemblies that require minimal clearance, while ensuring effective fastening performance.
Retains its structural integrity and performance at temperatures up to 260C. This makes it ideal or use in medical, electronics and automotive sectors. Material: PEEK Colour: Beige Series Code: SRK0085, SRK0087
Ultra Low Head Cap Screws, made from PEEK, provide exceptional mechanical strength, chemical resistance and thermal stability.
The ultra-low head design creates a low profile, which makes it ideal for small assemblies or flush-mounted applications where standard fasteners might be too bulky or interfere with functionality.
Retains its structural integrity and performance at temperatures up to 260C. This makes it ideal or use in medical, electronics and automotive sectors. Material: PEEK Colour: Beige Series Code: SRK0067, SRK0084
Confirmat Screws are primarily used for the easy assembly and dismantling of panels. Ideal applications include wooden furniture and flat pack assemblies. They feature a hexagonal driver that is compatible with an #3 or #4 Hexagonal Key.
The screw has a deep cutting thread that ensures accurate and close-fitting joints are achieved. The range features M5 and M7 thread size options.
Countersunk Socket and Torx Head Screws, made from PEEK, provide exceptional mechanical strength, chemical resistance and thermal stability.
The countersunk head design allows it to sit flush with a surface. It provides a clean, low-profile finish that is suitable for precision assembly.
Retains its structural integrity and performance at temperatures up to 260C. This makes it ideal or use in medical, electronics and automotive sectors. Material: PEEK Colour: Beige Series Code: SRK0086, SR2011
Hexagonal PEEK Bolts provide outstanding mechanical strength, chemical resistance and thermal stability.
Features a fully threaded shank that enhances shear strength and improves alignment in assemblies. The design allows for high torque applications and secure attachments using standard tools, ensuring reliability during assembly and maintenance tasks.
Retains its structural integrity and performance at temperatures up to 260C. This makes it ideal for use in semiconductor and chemical processing sectors. Material: PEEK Colour: Beige Series Code: SR1930
Joint Connector Bolts, which are often known as Furniture Connector Bolts or more simply Joint Bolts, can be used with Joint Connector Nuts & Barrel Nuts. Our customers regularly purchase our Cross Dowel Barrel Nuts too.
Made from zinc plated steel, for superior oxidation, they are ideal in the assembly of flat-packed furniture. Quick and easy, thanks to the flat head with a hexagonal drive. They can be fitted using an M4 Allen Key (not supplied).
Pan Head Torx screws, made from PEEK, offer excellent mechanical strength, chemical resistance and thermal stability. The pan head design features a large bearing surface that helps distribute the load evenly and helps minimize the risk of surface damage.
The Torx drive improves torque transmission and reduces the likelihood of cam-out, compared to traditional screw heads.
The screws maintain their structural integrity and performance at temperatures up to 260C, which makes them ideal for use in medical, electronics and automotive industries. Material: PEEK Colour: Beige Series Code: SR1931
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