Bolt Grades Explained: How to Choose the Right Strength Class
Bolt grades, also called strength classes, indicate a fastener’s tensile and yield strength. Metric grades (e.g., 8.8, 10.9) are marked as two numbers on the bolt head — the first indicates tensile strength in MPa, the second the yield-to-tensile ratio. SAE...
HSFG Bolts vs. Regular Bolts: Key Differences Explained
HSFG (High Strength Friction Grip) bolts and regular bolts transfer load differently. HSFG bolts are tightened to a controlled preload, creating clamping friction between joined steel plates so the connection resists slip under service load — making them ideal for bridges,...
Shear Stud Sizes & Specifications
Shear studs are sized by diameter (typically M12–M25), length (up to 300mm), and welding components — an aluminium arc-initiation tip and a ceramic ferrule. The right size depends on the composite beam’s design load, deck profile, and concrete slab thickness, and...
