J-System hex bolt DIN933 PA6.6 M6 x 25

This bolt is part of the category stud bolts, within the mechanical fastening range of Proffix. On this page you can read what to pay attention to when choosing, and when plastic is a good alternative to metal.

What does the size M6x25 mean?

The M stands for metric thread and the 6 for an outer diameter of 6 mm. The 25 is the length in millimetres, measured from the underside of the head to the tip of the bolt. When used with a nut, the thread must protrude visibly after tightening. If you screw the bolt into a tapped hole, check that the hole is deep enough for the full length.

When do you choose a hex bolt made of PA6.6?

Polyamide is lighter than steel and does not conduct electricity. That makes a plastic bolt suitable for electrical housings, light constructions and places where metal is unwanted, for example because of corrosion or contact with other materials. A PA6.6 bolt is less strong than a steel bolt, so do not use it for heavily loaded or structural connections. If in doubt, ask about the requirements for temperature, load and environment.

Points of attention during assembly

Tighten plastic bolts with care, because too much force can damage the head or the thread. Use a matching nut or a correctly tapped hole in the same thread size M6. A washer under the head helps distribute the pressure. Keep in mind that polyamide can absorb moisture, which may slightly affect its properties.

Order at Proffix

You can order this hex head bolt via the webshop under article number 3074.060.025. If you need multiple sizes or another material, such as stainless steel or zinc plated steel, please contact Proffix. They will look up the right fastening products for you and deliver on site.

Frequently asked questions

What does DIN933 mean for a hex head bolt?

DIN 933 is a standard for hex head bolts with full thread. The thread therefore runs over the entire length of the shank.

Is a PA6.6 bolt suitable for heavy loads?

No, polyamide is less strong than steel. For heavily loaded connections, choose a steel or stainless steel bolt.

Which nut fits an M6 bolt?

A nut with metric thread M6. Make sure the thread pitch of the bolt and the nut match.