Continuing our efforts to provide our customers with innovative, quality, high performance fastening solutions, Security Locknut has developed a more cost effective way to reduce bolt breakage and the costs and problems associated with it...Hardened Spherical Washers.

Hardened Spherical Washers from Security Locknut are engineered to specifically reduce bolt breakage by optimally assuring perpendicularity of the axial loading line of the bolt even in the most difficult environments. Using 2 sets per fastener assembly (see illustration), the washers self-align to compensate for dynamic forces that want to distort the fastening assembly and reduce its effectiveness. However, it doesn’t just stop at final assembly. The washers are designed to adjust 10º in all directions with a coefficient of friction that is less than 0.10 under loads up to 150,000 psi and are able to withstand over 1,000 hours of salt spray test (ASTM B-117). With their ability to efficiently and effectively compensate for dynamic loads in operation and deliver superior corrosion resistance, Security Locknut’s Hardened Spherical Washers combined with Security Locknuts are the ideal solution for joints susceptible to extreme loads and those that display "fretting" tendencies.

Tested and approved by major, Class 1, railroads throughout North America, Security Locknut hardened spherical washers have been proven to reduce bolt breakage by 80% or more. Security Locknut Hardened Spherical Washers are the right solution for you! Try them today!

In addition to the Hardened Spherical Washers, Security Locknut manufactures other unique washer products designed specifically for customer needs. Contact us to see what we can do for yours!