DIN and standard parts

Screws with external driving feature

In the case of screws with external driving feature, the tool is applied to the outside of the head.

Product types Downloads

Transfer of higher torques to the drive geometry

The most common head shape for these screws is a hexagon, but other shapes are also available (e.g. square heads).

Method and principle

Overview of screws with external driving feature

Working principle

A form fit between the screw geometry and the drive tool transfers the assembly torque to the screw and enables it to be screwed in.

Material

In addition to steel with different coating systems, available materials include stainless steel, brass and plastic.

Surfaces

Our products can be coated with different surface finishes depending on requirements and application. We will be pleased to give you individual advice on the right coating system.

We offer the following surfaces as standard:

Plain
Zinc plateed (industry standard)
VZD (zinc plated with thick layer passivation)
Zinc-nickel
Zinc flake

Find the right solution for your application

Types of screws with external driving feature

Thread-rolling screws for metals
Thread-rolling screws for metals create their own thread during assembly. This requires pre-punching. Once the screw has been installed, it often creates a hole with a metric thread. This means that the thread-rolling screw can be exchanged for a metric DIN or ISO screw during servicing. As a result, these screws can be used efficiently for a wide variety of applications.

Standards

DIN 7500 D
Tapping screws
The screw thread runs all the way from the tip to the head. There are special types such as the heavy-duty tip tapping screw, which penetrates the sheet to be joined so there is no need for prepunching. There are also double-thread types that take less time to screw in. Both coarse and fine threads are used in these applications, which affects both the reusability of the screw, and the resilience of the thread.

Standards

DIN 7976, similar to ISO 1479

DIN 7504 K, similar to ISO 15480
Hexagon fitted bolts
These screws have a hexagonal head and a dog point at the end of the bolt shaft. They can be used to absorb the transverse forces of a screw connection or for extremely precise connection of different workpieces. They are also efficient fasteners, because their design eliminates the need to combine spring pins and traditional screws.

Standards

DIN 609

DIN 610
Hexagon head bolts
Hexagon head bolts are suitable for a wide range of applications Their head shape allows the use of different tools for tightening and loosening, even in fixtures with limited space. It also enables greater torque to be transferred to the screw connection.

Standards

DIN 6921, similar to EN 1665

DIN 931, similar to ISO 4014

DIN 933, similar to ISO 4017

DIN 960, similar to ISO 8765

DIN 961, similar to ISO 8676

ISO 4014, similar to DIN 931

ISO 4017, similar to DIN 933
Self-locking screws
In such cases, screw locking components are used to prevent screw connections from working loose or even coming apart completely due to loosening or loss of pre-tensioning force. Based on the way they work, the individual measures and the self-locking screws are divided into three groups: setting locks, locking devices and anti-rotation locks.

In addition, a chemical coating can be used to add an adhesive or clamping element.

Standards

B158

B151

B53085

B7500 D (EE)

DIN EN 1665

DIN 962
Hexagon head screw plugs
Hexagon head screw plugs are used to seal unused or open holes with a thread. This can be a permanent or temporary measure. Holes on vehicles for oil drainage, for example, can be sealed using locking screws.

Standards

DIN 910

DIN 7604