DIN EN 4161 : 2020 Title: Aerospace series - Screws, pan head, offset cruciform recess, coarse tolerance normal shank, long thread, in alloy steel, cadmium plated - Classification: 1 100 PMa (at ambient temperature)/235 °C; German and English version EN 4161:2019 Year: 2020 Publisher: DIN Media GmbH Availability: Within 1-2 working days