BigHead® Threaded Bolts are externally threaded with perforated heads. They come in a variety of head shapes and are manufactured in both metric and UNC thread forms in numerous lengths and diameters. BigHead® Bolts are available in steel and/or stainless steel, depending on thread size and stud length.

BigHead® Threaded Bolts are externally threaded with perforated heads. They come in a variety of head shapes and are manufactured in both metric and UNC thread forms in numerous lengths and diameters. BigHead® Bolts are available in steel and/or stainless steel, depending on thread size and stud length.

BigHead® Threaded Bolts are externally threaded with perforated heads. They come in a variety of head shapes and are manufactured in both metric and UNC thread forms in numerous lengths and diameters. BigHead® Bolts are available in steel and/or stainless steel, depending on thread size and stud length.

Severe environmental conditions experienced in marine applications and other harsh conditions such as effluent treatments require special care. BigHead® Stud and Bolt Specials for Marine are 316 Stainless Steel fasteners made to your specifications, so EFC International can provide you exactly what you need.

This ingenious circular fastener solution uses two concentric rolled rings of stainless steel wire, with diameters determined by the required PCD of the male fasteners. Accurate jigging and welding ensures instant alignment with mating components. They are manufactured in metric and UNC thread forms in numerous lengths and diameters, and are designed to be fixed for life with very high torque and shear resistance.

BigStrip® Studs are perfect for those occasions when it is inconvenient to use individual bigHead® Studs. They are jig-built to very high tolerances and consist of any number of studs welded to a 16 mm wide metal strip. Thus, they enable rows of studs to be mounted or positioned with extreme accuracy and speed. They are made in 1 meter lengths but can be cropped or welded together for longer needs. Additionally, these can be supplied with male, female, threaded or unthreaded components in virtually any combination to suit your specific needs. Since these fasteners are made to order, the parts pictured are intended as reference only.