Slotted capstan screws
Slotted capstan screws may be used both as fastening and adjusting screws. They are primarily designed for use in electrical engineering and may be tightened by means of a sliding tee bar where it is not possible to use a screwdriver. Locking wires are often attached to the cross holes for securing purposes.

Check out other specifications
Cold rolled flat steel products for cold forming – Technical delivery conditions – English version of DIN EN 10130
ELECTRODEPOSITED COATINGS OF ZINC ON IRON AND STEEL
Taper Key Torque Transmission – Parallel Keys – Dimensions and Application
Quenched and tempered steels – Technical delivery conditions for special steels – English version of DIN EN 10083 Part 1
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