Scoped Engineering Calculation
Bolt Axial Stress-Area Loads
Calculate F=σ·As for user-supplied ultimate and reference axial stresses. No shear capacity or design resistance is inferred.
Axial reference products
Axial products
MPa is N/mm², so each product is in newtons. “Ultimate product” is not a guaranteed specimen result or design resistance; the entered Rm and As must match the exact fastener and applicable source.
ISO 898-1 scope
ISO 898-1:2013, confirmed in 2025 and marked for revision, covers specified mechanical/physical properties for carbon/alloy-steel metric fasteners M1.6–M39 at 10–35 °C. It explicitly excludes requirements for shear resistance, fatigue and torque/clamp performance. The previous M3–M64 property-class lookup and “0.6 shear capacity” have therefore been removed.
Why double shear is not just a selector
Connection resistance depends on whether each plane crosses threads or shank, actual shear area, material model, bearing and tear-out of connected parts, slip, eccentricity, load sharing, combined tension/shear, fatigue and the governing code. A generic 0.6RmAs multiplied by plane count cannot establish capacity.
Inputs: obtain As, Rm and the chosen reference stress from the current licensed standard, verified manufacturer data or material certificate for the exact diameter, pitch, property class, product geometry and temperature.
Profesionální přístroje a software pro vyvažování v terénu. Používají se ve více než 50 zemích.
