Round head
Countersunk head
Raised countersunk head
Hex with collar
Round head with collar
Countersunk head with rib
Bugle head
Raised cheese
Hex chamfered double faces
ASME/ANSI B18.6.3-30-2013
Type AB 6-Lobe concave large hex head self tapping screws-Table 30
ASME/ANSI B18.6.3-33-2013
Type AB 6-Lobe concave hex collar self tapping screws-Table 33
ASME/ANSI B18.6.3-39-2013
Type AB 6-Lobe round head collar self tapping screws-Table 39
GB/T 2670.1-2017
6-Lobe pan head tapping screws-type C
GB/T 2670.1-2017
6-Lobe pan head tapping screws-type R
GB/T 2670.2-2017
6-Lobe 90°flat head tapping screws-type C
GB/T 2670.2-2017
6-Lobe 90°flat head tapping screws-type R
GB/T 2670.3-2017
6-Lobe 90°oval head tapping screws-type C
GB/T 2670.3-2017
6-Lobe 90°oval head tapping screws-type R
Q 27A-2012
6-Lobe pan head tapping screws-type C
QC 27B-2012
6-Lobe 90°flat head tapping screws-type C
Q 27C-2012
6-Lobe 90°oval head tapping screws-type C
