Hobson Metric Fine Hex Set Screw, M8 / 40

The Hobson metric fine hex set screw has a hex head and a metric fine pitch thread, and is fitted into a tapped hole or through a clearance hole with a nut (Class 8.8, plain). There are 23 items: M8 to M14, in lengths from 25 to 65mm. Class 8.8 is high tensile, and corresponds to imperial grade 5.

The pitch is part of the size name for each item. Match the pitch of your nut or tapped hole as well as the diameter.

Where this product is used

• Fitted into a tapped hole, or through a clearance hole with a nut and washer, to clamp parts together
• Replacing a hex head screw of the same thread form, diameter, pitch and length
• Machinery, equipment and fabrication work where a hex head screw is called for

Features

• 23 items: M8 to M14
• Class 8.8, plain
• Length 25 to 65mm
• Sizes: M8 to M14

Key specifications

Choosing the right option

Choose the thread form first: the screw and the nut or tapped hole must match in thread form, diameter and pitch. Fine pitch means a finer pitch than the standard coarse thread of the same diameter, so a standard metric nut will not fit. Length is measured from under the head to the end of the screw. For a different strength level see Hobson Metric Hex Set Screw, Class 4.6 UTS, Plain, M16, M20 and M24.

Related items: Hobson Metric Fine Hex Set Screw, Class 8.8, Zinc Plated, M8 to M24, Hobson Metric Fine Hex Set Screw, Class 10.9, Plain, M30 x 50 to 100mm and Hobson Metric Fine Hex Set Screw, Class 10.9, Zinc Plated, M10 to M30.