BS En15048-1 Sb Half Thread Hex Head Bolt
EN 15048 of a hexagon head bolt with a half-thread (shank) and a corresponding hexagon nut, manufactured from carbon steel property class 8.8. As a controlled "SB" (Structural Bolting) component, it features specific traceability markings on the head and is intended for static shear load applications where preloading is not required .
| STYLE | BS En15048-1 Sb Half Thread Hex Head Bolt |
| STANDARD | En15048 |
| Brand | QBH |
| SIZE | M4-M64 |
| CLASS(Carbon steel) | 8.8,10.9,12.9(BOLTS) 8,10,12(NUTS) |
| Coating(Carbon steel) | black, zinc, HDG, Heat treatment, Dacromet, GEOMET |
| MATERIAL | Carbon steel |
| PACKING | bulk/ boxes in cartons, bulk in polybags/ buckets, etc. |
| PALLET | solid wood pallet, plywood pallet, ton box/bag, etc. |
Q: What are the specific dimensional and mechanical standards for this half-thread bolt?
The bolt conforms to ISO 4014 (partial thread) and the nut to ISO 4032 . Property class is 8.8U , with "U" indicating 6az thread tolerance before hot-dip galvanizing to ensure final fit after coating.
Q: Why specify a half-thread design for non-preloaded connections?
The unthreaded shank provides a larger cross-sectional area through the joint's shear planes. This results in higher shear resistance and stiffness compared to the threaded portion, optimizing load capacity for static shear applications.
Q: What certification and marking are required for compliance?
The bolt head must be marked with "SB" , property class 8.8 , and a batch traceability code . The assembly must bear the CE mark under hEN 15048-1 and be supplied with a batch-specific 3.1 inspection certificate (EN 10204). Washers, if required, are ordered separately to ISO 7089
Q:Are you a factory or trading company?
A: We are factories, mainly producing fasteners, such as nuts, bolts, screws and rods, and meanwhile, we also manage other hardware products.
Q: Where is your factory located? How can I visit there?
A: Our factory is located in Jiaxing City, Zhejiang Province with a good location and convenient transportation, which is next to Shanghai Port, Ningbo Port and Zhapu Port.
Q: How does your factory do regarding quality control?
A: "Quality is priority" we supervise each production link and we always attach great importance to quality controlling from the beginning to the end.
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