J-System DIN7504K ZSK SW10 ZN hex head 6.3 x 130

On this page the specification is fully included in the product name. The size 6.3x130 is the screw diameter times the length in millimetres, and the article number is 3770.063.130. This makes it easy to compare this item with other screws in the self-tapping sheet metal screws category.

Self-drilling screw 6.3x130: what the size means

The 6.3 stands for the outer diameter of the thread, the 130 for the length in millimetres. Measure the length of a hexagon head screw from the underside of the head to the tip. A long screw like this is intended for situations where you need to go through several layers or thick material. Always calculate how much of the screw must go into the base material, in addition to the thickness of what you are fastening.

Hexagon head and SW10: tightening with the correct spanner

SW10 means the hexagon head has a key width of 10 mm. Therefore use a suitable socket or socket bit of 10 mm. A well-fitting socket prevents the head from rounding off and gives more grip than a slotted or cross head, especially when tightening a longer screw.

Galvanised (ZN): suitable for which environment

ZN stands for a zinc layer on the steel. This protects against rust in dry or covered environments. If you use the screw outdoors or in a damp room, check whether galvanised protection is sufficient for your application. For highly variable or corrosive conditions, a stainless steel variant may be a better choice.

Frequently asked questions

What is a DIN7504K screw?

DIN7504K is the standard designation for a self-tapping screw with a drill point and hexagon head, intended for fastenings in thin steel or other sheet material.

Which spanner do I need for SW10?

You need a socket or socket bit of 10 mm, fitting the hexagon head.

Do I need to pre-drill for this screw?

The drill point is designed to make the hole itself. Whether pre-drilling is needed depends on the material and thickness. Check this for your application.