What is an SB set EN 15048-1 Hex Bolt
Typically, steel structure bolting Joints either conduct static shear force or simply fasten steel structure components together. In these types of connections, precise preloading of the hex head bolts is not technically necessary nor economically prudent.
So far, these types of connections have been executed with property class 8.8 hexagonal bolts according to standards DIN 931 or DIN 7990, and hexagonal nuts according to DIN 934. In the past, the connections have been approved with reports authenticated by Finnish Constructional Steelwork Association, as well as Material Certificates such as EN10204.3.1.
Hexagonal Head Bolt assemblies for non-preloaded steel structure connections pursuant to EN 1090-2 must be made with SB sets of the new standard EN 15048-1. Non-preloaded connections can also be executed with HV/TCB assemblies EN 14399.
“Bolt assembly” refers to a bolt, a nut and any washer(s). EN 15048 requires that all bolt assembly components must comply to European standards. The standard does not, however, specify any standards applicable to the components, but rather indicates the general technical requirements. Ferrometal Oy’s SB sets include hexagonal bolts EN ISO 4014 and EN ISO 4017 and hexagonal nuts EN ISO 4032. The property class of our SB set components is 8.8 and they are hot dip galvanized.
SB Hexagonal Bolt Product Requirements
Similar to HV sets, SB sets hex head bolt must also be procured from one CE-certified manufacturer. This requirement applies to bolts and nuts. The use of washers is optional, which is why no new requirements have been introduced. Washers commonly used in steel construction will continue to be approved for use.
SB sets hex head bolt must also carry CE marking, although a label on the package is sufficient. The manufacturing batch number must be indicated on the package in order to ensure traceability.
Furthermore, each individual hex head bolt and nut must carry the “SB” marking in addition to the property class and manufacturing markings. The marking indicates that the products have been approved for steel constructions, distinguishing them from ordinary hexagonal bolts.
