M8 A2 Grade Allen Threaded Bolt Head Cap Socket Key Screws

Allen Threaded Bolt Screws

As a part of our extensive range of fasteners, Speciality Metals stocks a variety of both standard fasteners and specialist fasteners, including both steel and stainless steel fasteners, nuts and bolts, screws and steel washers.

We ensure that we offer a comprehensive range which meets the needs and requirements of each and every one of our customers, whether you are looking for standard fasteners or something a little more unusual.

Top quality stainless steel Allen threaded bolt screws supplied straight from Warrington, UK. When it comes to industrial fasteners, the DIN 912 standard is a benchmark for reliability and durability. Within this standard, Allen Key Socket Screws remain a popular choice for their versatility and ease of use. This type of fastener, with its round shape and Allen Key drive style, offers excellent grip and torque control. Among its many applications, DIN 912 Allen Key Socket Screws with an M8 (8mm) thread diameter and various lengths are often used as Cap Screws in heavy equipment, machinery, and construction projects. Furthermore, the use of stainless steel grade 304 (A2) ensures high corrosion resistance and strength. 

We also offer washers that will compliment our range of screws and bolts perfectly.

Key product details:

• Standard – DIN 912
• Fasteners Type – Allen Key Socket Screw
• Shape – Round
• Drive Style – Allen Key
• Thread Diameter – M8 (8mm)
• Screw Length – Various
• Metal – Stainless steel grade 304 (A2)

Speciality Metals are the best suppliers for you because:

• FREE UK delivery on all orders
• Order dispatch within 24 hours of order
• Located in Warrington, UK which is the UK home of mesh and metals
• Our experienced staff are experts in the mesh market and care personally about your customer experience

Furthermore we stock a vast range of plain wire mesh and perforated metal options that compliment our sheet metal range perfectly.

FAQs About These Fasteners 

What Tools are Needed for Installation?

Essential Tools

1. Allen Wrench or Hex Key: The primary tool needed is an Allen wrench (also known as a hex key) that fits the internal hexagonal shape of the bolt cap screw. These come in various sizes and may be L-shaped, T-shaped or fit into a screwdriver handle. Make sure to use the correct size to avoid stripping the internal hex.

2. Screwdriver or Drill with Hex Bit: For faster installation, particularly for multiple screws, a power drill with a hex bit that matches the size of the Allen key bolt can be used. Ensure the drill has torque control to avoid over-tightening.

3. Wrench or Socket Set: For screws with an external hex or a bolt head, an appropriately-sized wrench or socket may also be needed to hold the bolt in place while tightening the nut.

Optional Tools

1. Torque Wrench: For applications where precise torque is required, a torque wrench can help ensure that the screw is neither too loose nor too tight.

2. Thread Locker: In vibrating environments or where the screws must not loosen over time, a thread locker can be applied to the threads before installation.

3. Ruler or Calipers: For precise placement or depth, measuring tools like a ruler or calipers may be necessary.

4. Level: In some installations, ensuring that the object being fastened is level is important. A simple bubble level or laser level can help with this.

5. Pliers: These could be useful for holding a nut or washer in place during installation, especially in tight spaces where a wrench may not fit.

6. Tap and Die Set: For creating custom threads in metal pieces, a tap and die set could be necessary. However, this is generally for more specialized applications.

7. Gloves and Safety Gear: While not tools per se, gloves can protect your hands during installation, and safety glasses can protect your eyes from any debris or accidental slips.

8. Lubricant: In some cases, especially where there’s a potential for galling (cold welding of threads), you may need a lubricant suitable for stainless steel.

Can Stainless Steel Allen Key Bolt Cap Screws be Used Outdoors?

Stainless steel Allen key bolt cap screws are well-suited for outdoor use, primarily because of their excellent resistance to corrosion. This makes them ideal for applications that are exposed to moisture, varying temperatures and even chemicals, such as outdoor furniture, marine equipment and structures like bridges. However, the specific grade of stainless steel used is important, especially for harsher environments like coastal or marine settings, where a higher grade like 316 may be preferable over the more common 304. While they may be more expensive initially, their durability and low maintenance often make them cost-effective in the long run. It’s also essential to consider factors like torque settings and the potential for galling, which can be mitigated with appropriate lubricants. Overall, their strength, durability and corrosion resistance make stainless steel Allen key bolt cap screws a reliable choice for outdoor applications.

Can you Use These Screws in High-Vibration Applications?

Yes, stainless steel Allen key bolt cap screws are often a good choice for high-vibration applications due to their ability to maintain a secure fit under stress. The internal hex drive design allows for higher torque application, providing a more reliable and secure connection that is less likely to loosen over time. In situations where vibration is a concern, additional measures such as using thread lockers can enhance the screw’s resistance to vibrational loosening. Furthermore, the inherent strength and durability of stainless steel make these screws highly resistant to wear and tear, even in fluctuating conditions. Therefore, when properly installed and perhaps augmented with additional locking mechanisms like thread lockers or lock washers, stainless steel Allen key bolt cap screws can be highly effective in high-vibration environments.

Can I Reuse Stainless Steel Allen Key Bolt Cap Screws?

The reusability of stainless steel Allen key bolt cap screws depends on several factors, including the specific application they were used in, the torque to which they were tightened and their overall condition.

1. Thread Integrity: Inspect the threads carefully for any signs of stripping, galling or wear. Compromised threads can lead to a less secure fit.

2. Head Condition: Ensure that the internal hex drive of the cap screw is not rounded off or otherwise damaged. A damaged head can make proper tightening difficult and could compromise the joint.

3. Material Fatigue: Metal fatigue can occur over time, especially in high-stress or high-vibration environments. This is harder to inspect visually but can compromise the integrity of the fastener.

4. Application-Specific Guidelines: Some applications have strict safety regulations that may discourage or prohibit the reuse of fasteners. Always check the guidelines or consult experts in your particular field.

5. Thread Locker: If the original application used a permanent thread locker, removal may damage the threads, making reuse risky. If a removable thread locker was used, make sure to clean the threads thoroughly before reapplying new thread locker for reuse.

6. Inspection: In critical applications, a more rigorous inspection using techniques like ultrasonic testing may be necessary to ensure that the fasteners have not been compromised.

7. Documentation: Keep track of the history of the fastener, including its previous applications and any torquing specs, to make an informed decision about its reusability.