Bolt fastenings for heavy-duty joins and assemblies

Bolts form the backbone of structural joins, mechanical assemblies and outdoor fixings. Selecting the correct grade, length and thread type is crucial for safety and durability in construction, furniture assembly and repairs.

Choosing bolts for strength and environment

Identify the required tensile strength and corrosion resistance. Metric and imperial threads, coarse or fine pitches, and material grades affect load-bearing capability. Stainless steel or galvanised finishes are advisable for external use to prevent rust and degradation.

Practical bolt types and companion hardware

• Hex bolts for general construction and machinery
• Coach screws for timber connections
• Carriage bolts for a smooth, tamper-resistant head
• Flange bolts and washers to distribute load and prevent pull-through

Buy bolts alongside compatible nuts and washers to ensure correct fit. Clearance lots or mixed packs can help when stocking diverse projects, but always verify material grade and thread compatibility to maintain joint integrity and long-term performance.