Round head
Countersunk head
Raised countersunk head
Cheese
Round head with collar
Low cheese head
Raised cheese
GB/T 2673-2007
6-Lobe 90° flat head screws
ISO 14581-2013
6-Lobe 90° flat head screws
ASME/ANSI B18.3-III.2-2012
6-Lobe 82° flat head cap screws-Table III-2
Q 258-1999
6-Lobe 90° flat head screws
ASME/ANSI B18.6.3-2-2013
6-Lobe 80° flat head screws-Table 2
GB/T 2673-1986
6-Lobe 90° flat head screws
ISO 14582-2013
6-Lobe 90° flat head screws
ISO 14582-2018
6-Lobe 90° flat head screws
ASME/ANSI B18.3-III.2-2017
6-Lobe 82° flat head cap screws-Table III-2
ASME/ANSI B18.3-III.2-1976
6-Lobe 82° flat head cap screws-Table III-2
Q 258-2012
6-Lobe 90° flat head screws
QC/T 856-2011
6-Lobe 90° flat head screws
GB/T 2673.2-2020
Hexalobular socket high countersunk head screws
ISO 14581-2023
6-Lobe 90° flat head screws without underhead reinforcement
ISO 14581-2023
6-Lobe 90° flat head screws with underhead reinforcement