DIN 7983
CROSS RECESSED RAISE COUNTERSUNK
HEAD TAPPING SCREWS
ANSI/ASME B18.6.4 1981 IFI H-33(E-39)
CROSS RECESSED OVAL
COUNTERSUNK HEAD TAPPING SCREWS
DIN 7973
RAISE COUNTERSUNK HEAD TAPPING
SCREWS WITH SLOT
ANSI/ASME B18.6.4 1981 IFI H-32(E-28)
SLOTTED OVAL COUNTERSUNK HEAD
TAPPING SCREWS
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