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A successful steel connection starts with the right fastener specification. High strength structural bolts connect steel members through end plates, splice plates and other connection details, supporting on-site assembly of prefabricated steelwork.
At ZSJH Steel, your connection drawings and bolt schedule form the starting point for an enquiry. Reviewing fasteners alongside the steel components helps clarify quantities, assembly configurations, documentation and delivery requirements before ordering.
High strength does not automatically mean preloaded. The connection design determines whether a suitable preloaded assembly is required. For slip-resistant joints, performance also depends on the specified preload and the condition of the contacting steel surfaces.
Specify bolts against connection drawings and material lists to support consistent purchasing across beams, columns, bracing and connection plates.
Include compatible nuts and the required washers in your enquiry to help avoid missing components and incomplete installation packages.
Define the bolt system, dimensions, finish and inspection documents before procurement, making quotations easier to compare.
Discuss packing by size, connection group or construction phase. Clearly identified packages help receiving teams reconcile deliveries with the project bolt schedule.
The following information is a selection reference, not a confirmed stock list. Availability must be confirmed for each order.
| Item | Specification / Selection Basis |
|---|---|
| Product | High strength structural bolt assembly |
| Components | Bolt, compatible nut and washers required by the selected system |
| Bolt Type | Hex-head or tension-control type, subject to specification and availability |
| Strength Class | Common metric examples include 8.8 and 10.9; selection follows the connection design |
| Nominal Diameter | M12–M36 is a reference range for some structural bolting systems; confirm available sizes |
| Bolt Length | According to connection thickness and approved drawings |
| Thread Configuration | According to the selected product standard |
| Surface Finish | Specified and approved for the complete assembly |
| Installation Requirement | Non-preloaded or preloaded, as specified by the engineer |
| Documentation | Required reports and traceability records agreed before ordering |
| Packaging | Packing method and identification agreed for the shipment |
Subject to an approved connection design, high strength bolts may be specified for:
Beam-to-column connections in industrial steel buildings.
Beam and column splices in prefabricated frames.
Bracing connections and gusset plates.
Steel platforms and mezzanine structures.
Roof truss connections.
Warehouse and workshop structural assemblies.
Identify the required checks in your purchase specification:
Dimensions, thread condition and visible defects.
Component markings and batch identification.
Applicable mechanical-property and assembly test reports.
Surface-finish requirements and coating inspection.
Packing-list accuracy and quantity verification.
Inspection and documentation requirements should be agreed before order acceptance.
Use the approved connection drawings and bolt schedule. Selection should consider the connection design, assembly type and installation requirements—not appearance or diameter alone.
No. Preloaded joints require an assembly qualified for that purpose. A strength-class marking alone does not demonstrate suitability.
It is a structural bolt with a splined end used with a compatible shear wrench. Installation must follow the complete manufacturer’s procedure, including joint bedding and final tightening.
Yes. Specify the complete assembly and required washer arrangement. Component compatibility must be maintained; separately purchased parts should not be assumed interchangeable.
No. Follow the approved procedure for the specific assembly. Torque requirements depend on the assembly, its condition and the installation method.
Looking for high strength bolts for your next steel building?
Send ZSJH Steel your connection drawings or bolt list for a project-specific quotation. Include nuts, washers, packaging and inspection requirements so the complete supply scope can be reviewed.
