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OnBuy.com£5.88Visit shop A2 Stainless Steel Button Head Bolts Iso 7380 Hex Socket Allen Dome Head Screws M3 To M10 5056523231600
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B&Q£10.18Visit shop B&Q - Hex Socket M4X16mm ( Pack Of: 20 ) Button Head Bolts Screws A2 304 Stainless Steel (Iso 7380) Fully Threaded
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This guide is for professionals and DIY enthusiasts needing reliable fasteners. The key benefit is the superior durability and corrosion resistance of A2 304 stainless steel. A potential caveat is ensuring the correct bolt size for your specific application. These bolts are engineered to ISO 7380 standards, featuring a hex socket button head design for secure installation and removal. They are constructed from premium A2 304 stainless steel, offering excellent strength and resistance to corrosion, making them suitable for a wide array of demanding environments and projects.
| Colour | Silver |
|---|---|
| Model Part Number | M4X30mm |
| Brand | SS8 |
A2 304 stainless steel provides excellent resistance to corrosion and is durable, making the bolts suitable for a wide range of environments, including those exposed to moisture.
Typically, an M4 socket requires a 3mm Allen wrench. Always confirm the exact size needed for your specific tool.
Yes, the A2 304 stainless steel construction makes them highly resistant to rust and corrosion, ideal for outdoor applications.
While stainless steel is resistant, direct contact with certain other metals, especially in corrosive environments, can sometimes lead to galvanic corrosion. It's advisable to use appropriate washers or coatings if this is a concern.
ISO 7380 is an international standard that specifies the dimensions and technical requirements for button head (or socket button head) cap screws, ensuring consistency and quality.
The bolt length should be sufficient to pass through the materials being joined and engage properly with at least one to two threads of the nut or tapped hole. Avoid bolts that are excessively long, as this can reduce holding strength and may require additional hardware like washers.
A2 304 stainless steel is austenitic and is generally considered non-magnetic or only very weakly magnetic in its annealed state. It may exhibit slight magnetism after cold working (like during manufacturing).
If the hex socket is damaged, try using a slightly larger or specialized extractor tool. If the head is completely rounded, a bolt extractor or cutting a slot for a flathead screwdriver may be necessary, though this will likely damage the bolt.
Ensure you are using the correct size bolt (M4) and that the mating thread (nut or tapped hole) is clean and undamaged. Check for any debris or cross-threading.
While A2 304 stainless steel is highly resistant, extreme conditions or contact with other metals can cause surface discoloration or minor corrosion. Clean with a soft cloth and mild detergent. For persistent issues, consult specialized stainless steel cleaning products.
Re-check the torque specification for your application. Ensure the mating thread (nut or hole) is sound and properly sized. Consider using a thread-locking compound if vibration is a concern.
Setup: These bolts are designed for direct use. Ensure you have the correct size Allen wrench (hex key) to fit the socket head. Thread the bolt into the pre-tapped hole or nut until snug. For optimal security, tighten to the appropriate torque specification for your application, avoiding over-tightening which could strip the threads or damage the material being fastened.
Compatibility: These M4X30mm bolts are compatible with M4 nuts and M4 tapped holes. They are designed to be used with materials where a 4mm diameter bolt is suitable. Always verify the material strength and load-bearing requirements of your project to ensure these bolts are the appropriate choice.
Care: While A2 304 stainless steel offers excellent corrosion resistance, it is not entirely impervious to damage. Avoid using abrasive cleaners or tools that could scratch the surface. For cleaning, a soft cloth with mild soap and water is recommended. Periodically inspect fasteners in critical applications for any signs of wear or damage.
