Hobson Metric Hex Bolt, M6 / 55

The Hobson metric hex bolt range has 66 items (Class 8.8, zinc plated): M6 to M30, in lengths of 16 to 375mm. A hex bolt has a hexagonal head and a threaded shank, and is fitted with a nut or screwed into a tapped hole. Class 8.8 is high tensile, and corresponds to imperial grade 5.

Spanner sizes are the width across flats (A/F), using its class 4.6/8.8 column. Pack quantity is shown for each item.

Where this product is used

• Clamping parts together through a clearance hole, with a nut on the far side
• Screwed into a tapped hole of the same thread where a nut cannot be fitted
• Fixing with a flat washer under the head or nut to spread the load

Features

• 66 items: M6 to M30, 16 to 375mm long
• Metric thread, hex head
• Class 8.8, zinc plated
• Minimum tensile strength for each size, shown for each size

Key specifications

Choosing the right option

Choose the thread form first: the bolt and its nut must match in thread form, diameter and pitch. Metric sizes are the nominal diameter in millimetres; compare the pitch shown for each item with your nut. Length is measured from under the head to the end of the bolt, so choose size and length together. Spanner size is the width across flats of the head and nut.

Related bolts: Hobson Metric Hex Bolt, Class 8.8, Hot Dip Galvanised, M8 to M48 x 20 to 450mm, Hobson Metric Hex Bolt, G8.8, Galvanised, M12 x 30 to 50mm and Hobson Metric Hex Bolt, G8.8, Zinc, M6 to M24 x 16 to 200mm.