Use this calculator to estimate bolt preload, clamp force, and tightening torque for bolted joint connections. It can help engineers evaluate joint performance, fastening requirements, and proper bolt loading for hydraulic swivels, rotary unions, and other mechanical assemblies.
UEA Tools | Bolted Joint & Clamp Force Calculator
Disclaimer: UEA does not guarantee the accuracy of these calculations and accepts no liability for errors or omissions. Calculations are provided for informational purposes only and may not be fully accurate.
Eng·Ref
Engineering Reference Calculators
Bolted Joint Calculator
Stress area, tensile stress area, minor diameter, and clamp load for standard Metric and Unified (UNC/UNF) bolt specifications.
Bolt Specification
K=0.2 lubricated, 0.15 waxed, 0.3 dry
Enter specification and calculate
ISO 286 Limits & Fits Calculator
Standard tolerance limits for holes and shafts per ISO 286-1. Identifies clearance, transition, and interference fits for accurate mechanical design.
Fit Parameters
Range: 1–500 mm per ISO 286
Enter parameters and calculate
Metal Hardness Converter
Convert between Rockwell (HRC, HRB), Brinell (HB), Vickers (HV), and approximate tensile strength. Based on ASTM E140 conversion tables.
Input
Enter hardness value and convert
Surface Roughness Converter
Convert between Ra, Rz, Rmax, N-grade, and micro-inch values. Includes typical machining process reference table.
Input
Quick Select — Common Process
Enter value and convert
ISO 3601-2 O-Ring Groove Dimensions
Standard groove dimensions for static, dynamic, and rotary applications per ISO 3601-2. Enter O-ring cross-section diameter to generate groove specifications.
O-Ring Parameters
Select application and calculate
Hydraulic & Pneumatic Cylinder Calculator
Calculate force, speed, flow rate, and power for hydraulic and pneumatic cylinders. Extend and retract stroke analysis.
Cylinder Parameters
Enter parameters and calculate