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EN15048
BS En15048-1 Sb Half Thread Hex Head Bolt
BS EN 15048-1 SB half-thread hexagon head bolt – non-preloaded structural bolting assembly per EN 15048-1:2016. Bolt conforms to ISO 4014 (partial thread) with unthreaded shank providing larger cross-sectional area through shear planes for higher shear resistance in static applications. Property class 8.8U (carbon steel), "U" indicates 6az thread tolerance before hot-dip galvanizing to ensure fit with 6H tolerance nuts after coating. Paired with hexagon nut per ISO 4032, property class 8. Head marked with "SB" (Structural Bolting), property class, and batch traceability code. CE marked per hEN 15048-1 with EN 10204 Type 3.1 inspection certificate. Diameters M12–M39 for steel structures per EN 1090-2. Finishes: zinc plating, hot-dip galvanizing, black oxide, Dacromet, GEOMET. Washers per ISO 7089 ordered separately. Applications: static shear connections in metal construction, buildings, bridges, and structural steel framing where preload is not required.
BS EN 15048-1 SB half-thread hexagon head bolt – non-preloaded structural bolting assembly per EN 15048-1:2016. Bolt conforms to ISO 4014 (partial thread) with unthreaded shank providing larger cross-sectional area through shear planes for higher shear resistance in static applications. Property class 8.8U (carbon steel), "U" indicates 6az thread tolerance before hot-dip galvanizing to ensure fit with 6H tolerance nuts after coating. Paired with hexagon nut per ISO 4032, property class 8. Head marked with "SB" (Structural Bolting), property class, and batch traceability code. CE marked per hEN 15048-1 with EN 10204 Type 3.1 inspection certificate. Diameters M12–M39 for steel structures per EN 1090-2. Finishes: zinc plating, hot-dip galvanizing, black oxide, Dacromet, GEOMET. Washers per ISO 7089 ordered separately. Applications: static shear connections in metal construction, buildings, bridges, and structural steel framing where preload is not required.
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Product Details
BS EN 15048-1 Non-Preloaded Structural Bolting Assembly | SB Half-Thread Hexagon Head Bolt
Product Introduction
CE-marked structural bolting assemblies manufactured to BS EN 15048-1:2016 for non-preloaded connections in steel structures per EN 1090-2. Each assembly comprises a hexagon head bolt to ISO 4014 (partial thread), a hexagon nut to ISO 4032, and optional washers to ISO 7089. The bolt carries the "SB" (Structural Bolting) marking on the head. Thread sizes M4 to M64 in ISO metric coarse pitch. Property classes: bolts 8.8, 10.9, 12.9; nuts 8, 10, 12.
Material & Mechanical Properties
Carbon steel bolts conform to ISO 898-1. Class 8.8 is standard for structural bolting; 10.9 and 12.9 are specified where higher shear or bearing capacity is required. Nuts conform to ISO 898-2. The designation "8.8U" denotes property class 8.8 with oversize thread tolerance 6az applied before hot-dip galvanizing, ensuring final thread fit meets 6H/6g after coating. Mechanical values are certified by lot with heat-number traceability.
Geometry & Thread
Half-thread (partial thread) bolt design per ISO 4014. The unthreaded shank presents full cross-sectional area through the shear plane, increasing shear resistance and joint stiffness compared to fully threaded fasteners. Thread length b follows ISO 4014 dimensional tables; overall length L is measured from under the head to the tip. The nut is style 1 per ISO 4032.
Certification & Marking
Each bolt head is permanently marked with "SB", the property class designation, and a batch traceability code. The assembly is CE-marked under the Construction Products Regulation (CPR) via harmonised standard hEN 15048-1. All components are supplied as a matched set from a single certified manufacturer. Batch-specific inspection certificate 3.1 per EN 10204 and Declaration of Performance (DoP) are supplied with each order.
Application Suitability
Non-preloaded shear connections in steel frames, secondary members, bracing, platforms, and general structural steelwork where controlled preload is not required by the design. The half-thread configuration optimises shear capacity without the installation complexity of torque-controlled tensioning. Where washers are specified, they are ordered separately and matched to assembly dimensions.
| Place of Origin | CHINA |
| Standard | BS En15048-1 Sb Half Thread Hex Head Bolt |
| HS CODE | 7318159001 |
| Brand Name | QBH |
| Certification | ISO9001 |
| Material | 35K, 40Cr, 35CrMo, SCM435，etc. |
| Size | M3-M64 |
| Production Process | Cold forging≤300mm, Hot forging≤1000mm |
| Class | 4.8/ 6.8/ 8.8/ 10.9/ 12.9 |
| Delivery Time | Within 30 Days |
BS EN 15048-1 Non-Preloaded Structural Bolting Assembly | SB Half-Thread Hexagon Head Bolt
Product Introduction
CE-marked structural bolting assemblies manufactured to BS EN 15048-1:2016 for non-preloaded connections in steel structures per EN 1090-2. Each assembly comprises a hexagon head bolt to ISO 4014 (partial thread), a hexagon nut to ISO 4032, and optional washers to ISO 7089. The bolt carries the "SB" (Structural Bolting) marking on the head. Thread sizes M4 to M64 in ISO metric coarse pitch. Property classes: bolts 8.8, 10.9, 12.9; nuts 8, 10, 12.
Material & Mechanical Properties
Carbon steel bolts conform to ISO 898-1. Class 8.8 is standard for structural bolting; 10.9 and 12.9 are specified where higher shear or bearing capacity is required. Nuts conform to ISO 898-2. The designation "8.8U" denotes property class 8.8 with oversize thread tolerance 6az applied before hot-dip galvanizing, ensuring final thread fit meets 6H/6g after coating. Mechanical values are certified by lot with heat-number traceability.
Geometry & Thread
Half-thread (partial thread) bolt design per ISO 4014. The unthreaded shank presents full cross-sectional area through the shear plane, increasing shear resistance and joint stiffness compared to fully threaded fasteners. Thread length b follows ISO 4014 dimensional tables; overall length L is measured from under the head to the tip. The nut is style 1 per ISO 4032.
Certification & Marking
Each bolt head is permanently marked with "SB", the property class designation, and a batch traceability code. The assembly is CE-marked under the Construction Products Regulation (CPR) via harmonised standard hEN 15048-1. All components are supplied as a matched set from a single certified manufacturer. Batch-specific inspection certificate 3.1 per EN 10204 and Declaration of Performance (DoP) are supplied with each order.
Application Suitability
Non-preloaded shear connections in steel frames, secondary members, bracing, platforms, and general structural steelwork where controlled preload is not required by the design. The half-thread configuration optimises shear capacity without the installation complexity of torque-controlled tensioning. Where washers are specified, they are ordered separately and matched to assembly dimensions.
| Place of Origin | CHINA |
| Standard | BS En15048-1 Sb Half Thread Hex Head Bolt |
| HS CODE | 7318159001 |
| Brand Name | QBH |
| Certification | ISO9001 |
| Material | 35K, 40Cr, 35CrMo, SCM435，etc. |
| Size | M3-M64 |
| Production Process | Cold forging≤300mm, Hot forging≤1000mm |
| Class | 4.8/ 6.8/ 8.8/ 10.9/ 12.9 |
| Delivery Time | Within 30 Days |
FAQ
1. How do you let me trust you.
Jiaxing City Qunbang Hardware Co.,ltd hs its own right of import and export,QBH trademark in China,United States,European Union have been registered.At the same time,you can also check the registration information of our company in the China industry and Commerce system.
2. How about your price.
We will be based on different markets,for different quality and quantity,tailor-made prices for customers,in order to achieve win-win goal.
3. How do you control your quality.
Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC),and the random samples is sent to TUV for testing.If the customer received the goods and found quality problems,QBH company promises to be responsible for returning money or replenishing the goods
4. Could you provide free samples?
For new customer, We can provide free samples for standard fastener, But the clients will pay the express
charges. For old customer, We will send you free samples and pay express charges by ourself.
5. What is your packing.
Usually 25KG/carbon,36CTNS on the pallets,or 20-30kg/Bags,then on the pallet,QBH company personalized packagingis also available,like 10PCS/plastic bag or 10pcs/box,it can print some information
such as LOGO and pattern of customers.
6. What is your payment term
Normally,our terms of payment are TT and L/C,if we cooperate for a long time,we can reach the point of mutual trust,and fully support our customers to become bigger and stronger in the local market.Not only in the price concessions,but also in the payment can also be made on credit,Specific credit sales time needs to be negotiated separately.
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