Material: Steel C45, black oxide finish, screw steel 12.9.

Features: does not damage the shaft, stronger clamping force than with set collars, even distribution of clamping forces, easy readjustment, precise bores in inch size. The threads of the metric screws DIN 912 are covered with a layer of polyamide. Tolerance b: +0.08 mm -0.25 mm. Temperature range: -40ºC to +175ºC.

Remarks to collars fromsteel: The black oxide on the clamping collars is formulated as partof the total performance of the product. It enhances the holding abilityof the collar, it efficiently reduces slipping on the shaft, hasanti-stick-slip characteristics and helps to keep the torque rating ofthe screw within its designed parameters. The oxide layer also providescorrosion protection.

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