DIN 911 hex key
Allen keys are used for tightening screws and threaded rods whose head has a hexagonal hole to insert the key. Its L-shape allows for leverage during tightening, facilitating high tightening torques. They are made of chromium-vanadium steel, which increases hardening and improves wear and corrosion resistance. They are manufactured according to DIN 911 standard.
Chrome vanadium steel 58 CrV4 (1.8161)