When assembling stainless steel joints, a very low revolution screw-driving machine is required, or the screws should be tightened by hand. Punching screw-driving machines should not be used.
MoS² lubricant or similar is recommended in unfavorable assembly conditions. If thread galling problems occur when assembling, please contact our technical team.
Tightening Torque & Load Tables
Reference values for BUMAX stainless steel fasteners. Values based on friction coefficient μ = 0.15.
Contact our technical team to discuss your custom BUMAX fastener requirements.
We can help you find the optimal solution for your specific requirements.
BUMAX 88 is one of our flagship stock grades that provides higher strength, corrosion resistance and fatigue performance than generic stainless steel fasteners.
BUMAX 109 is one of our flagship stock grades that offers higher strength than A4-100 and is the strongest A4/316 stainless steel fastener on the market.
BUMAX SDX 109 is a super duplex grade with excellent mechanical properties, and exceptional resistance to general crevice, pitting and stress corrosion.
