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OnBuy.com£5.38Visit 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 for machinery, automotive, construction, and general projects. The key benefit is the superior durability and corrosion resistance offered by A2 304 stainless steel, ensuring long-lasting performance. A minor caveat is the need for an appropriate Allen wrench for installation. These fully threaded bolts are engineered to ISO 7380 standards, featuring a hex socket button head for secure fastening and easy handling. They are designed for precision and reliability in demanding environments.
| Colour | Silver |
|---|---|
| Model Part Number | M4X20mm |
| Brand | SS8 |
Typically, an M4 hex socket button head bolt requires a 3mm Allen wrench.
Yes, the A2 304 stainless steel construction provides excellent resistance to corrosion and rust, making them suitable for outdoor applications.
Yes, they can be used in aluminum or plastic, provided the material is strong enough to handle the M4 thread and the application's load. Using appropriate nuts or threaded inserts is recommended for plastics.
ISO 7380 is an international standard that specifies the dimensions and requirements for button head socket screws, ensuring consistency and quality.
A simple wipe-down with a damp cloth is usually sufficient. For tougher grime, mild soap and water can be used, followed by drying.
A2 stainless steel (like this product) offers good corrosion resistance. A4 stainless steel contains molybdenum, providing superior resistance to certain types of corrosion, particularly in marine or highly acidic environments.
Check that the bolt is aligned correctly with the thread in the hole or nut. Ensure there are no obstructions or cross-threading. Verify that the hole/nut is indeed M4 size.
Ensure you are using the correct size Allen wrench for the M4 socket. If the socket is already damaged, the bolt may need to be replaced or removed using specialized tools.
This usually indicates overtightening or a defect. Attempt to remove the broken stud with pliers or a screw extractor if possible. Replace with a new bolt and use proper torque in the future.
Setup: To use the SS8 M4X20mm button head bolts, ensure you have the correct size Allen wrench (hex key). Insert the bolt into the pre-drilled hole and tighten using the Allen wrench until snug. Do not overtighten, as this could strip the threads or damage the material being fastened.
Compatibility: These bolts are designed to fit standard M4 threaded holes or nuts. They are compatible with A2 304 stainless steel, as well as most common construction and automotive materials like steel, aluminum, and certain plastics when appropriate inserts or nuts are used.
Care: To maintain their corrosion resistance and appearance, it's recommended to keep these bolts clean. Wipe them with a dry or slightly damp cloth to remove dust and debris. Avoid using abrasive cleaners or harsh chemicals, which can degrade the stainless steel surface over time.
