4 - 24 mm

Material quality: 5.

DIN: 1587

Surface treatment: zinc plated

Highly closed nuts based on DIN 1587. The highly closed nuts are ideal to cover screw bits jutting out protecting them against corrosion. The role of the highly closed nuts is not only aesthetic, but also the number of accidents can be reduced with them. The characteristic of this latter is essential in the case of playgrounds, for example. We offer the highly closed nuts in a material quality 5., with galvanised surface. It is also known as closed nut, conical nut

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