Pan Head Tapping Screws with Slot
Bracketed nominal diameters should be avoided wherever possible.
Normally these tapping screws are made in the sizes for which weight details are given. It is not practicable to make the sizes for which dashes appear instead of length data.

Check out other specifications
Cold rolled flat steel products for cold forming – Technical delivery conditions – English version of DIN EN 10130
Standard Specification for Alloy Steel Socket-Head Cap Screws
ISO general purpose metric screw threads – Tolerances – Part 1 : Principles and basic data
“TWIST OFF” TYPE TENSION CONTROL STRUCTURAL BOLT/NUT/WASHER ASSEMBLIES, STEEL, HEAT TREATED, 150 KSI MINUMUM TENSILE STRENGTH
STRUCTURAL BOLTS, STEEL, HEAT TREATED, 120/105 KSI MINIMUM TENSILE STRENGTH
Clevis pins without head (ISO 2340 : 1986) English version of DIN EN 22 340