Keel Bolt Calculator

Calculate keel bolt size, number, and torque for keel attachment on sailboats

Input Parameters

Results

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Number of Bolts
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Bolt Diameter
in
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Torque Specification
ft-lb
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Safety Factor

Reference

Dynamic load factor: 4x keel weight for grounding Safety factor: minimum 3.0 for keel bolts 316SS tensile: 75 ksi, Bronze: 60 ksi, Monel: 100 ksi