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M8 Bolts

M8 bolts are durable, strong fixings used for many applications such as bringing together heavy wood, concrete and metal. We stock all types of high-quality M8 bolts anticipating the needs of our customers. Browse our extensive range of M8 bolts in our catalogue below.


At Bolt World, we have an extensive range of M8 bolts and screws for all of your construction needs. We have every M8 bolt you can think of, including; M8 hex bolts, M8 high tensile bolts, M8 socket cap bolts, M8 roofing bolts, M8 steel studs and many, many more!

If you’re unsure which bolt is right for the work you need to carry out, then give us a call, we’re always happy to help 01375 767780.


All our M8 screws and bolts come with no minimum order; you can order as little as one bolt! If you still can’t find what you’re looking for, please contact us at 01375767780.

For customers in the UK, our courier will normally dispatch your order to you within 1-2 business days. For international orders, please contact us for delivery times and rates.


An M8 bolt is a metric bolt with a diameter of 8 millimetres. It is one of the most common bolt sizes used in a wide variety of applications, including construction, manufacturing, and the automotive industry.

8mm. The ‘M’ stands for ‘mm’, and the number means how many mm.

M8 bolts and screws are used in a wide variety of applications, including:

Construction: M8 bolts and screws are commonly used to fasten structural components, such as beams and columns.

Manufacturing: M8 bolts and screws are used in a variety of manufacturing applications, such as assembling machinery and equipment.

Automotive: M8 bolts and screws are used in a variety of automotive applications, such as fastening engine components and suspension components.

Other applications: M8 bolts and screws are also used in a variety of other applications, such as furniture assembly, home repair, and DIY projects.

M8 bolts and screws are available in a variety of different grades, which indicate their strength and durability. The most common grade for M8 bolts and screws is grade 8.8. However, higher grades are available for more demanding applications.

The tensile strength of an M8 bolt is the amount of force that it can withstand before it breaks. The tensile strength of an M8 bolt will vary depending on its grade and material. For example, a grade 8.8 M8 bolt has a tensile strength of approximately 800 MPa.

Stainless steel, in its nature, is resistant to corrosion and is ideal to provide a long-lasting, and secure fixing.