ELESA three-star knobs PA black/brass VB.639 FP

Polyamide is a thermoplastic and therefore has long, thread-like macromolecules that have no mutual crosslinking points. PA is milky white, has a slippery and abrasion-resistant surface, is resistant to chemicals and solvents, and is hard and tough. Various standards regulate mechanical connecting elements made of plastic (screws, nuts, washers), such as: B. DIN EN 34810, DIN 34811, DIN 34812, DIN 34813, DIN 34814, DIN 34815 and DIN 34816 their properties.