Sigma Fasteners

Sigma Fasteners has been providing quality bolting and coating services for the energy industry since 2004. The company is ISO 9001:2015 and API Q1 certified, and holds API Monogram licenses 20E-0017 BSL 1, 2 & 3 and 20F-0007 BSL 2 & 3. Sigma Fasteners manufactures and distributes ASTM bolting specified by the American Petroleum Institute and offers both standard and custom bolts to meet customer specifications. Their coating options include Whitford Xylan™, SermaGard® Ceramic Metallic, Everlube Product, and MacDermid Chloride Zinc electroplating. The company serves a variety of industries, including petroleum equipment manufacturers, offshore, refinery & chemical facilities, valve manufacturers, wind turbine and wind tower, pipelines, utility, construction, engineering – EPC, structural/civil, and supply. Sigma Fasteners operates a 35,000+ square foot warehouse to stock a wide array of fasteners and provides international shipping and export crating and documentation services. Their product range includes anchor bolts, cap screws, hex bolts, and stud bolts. As a licensed applicator for Sermagard products, Sigma Fasteners also offers custom high-pressure bolting in materials such as Inconel 718, 17-4PH, MP35N, and other special materials. The company is committed to responsible sourcing of conflict minerals and uses technology like ZNnGard™ for corrosion control in energy transition bolting requirements. Sigma Fasteners has developed a strategy for innovation and leadership in bolting products, ensuring a wide selection of materials ready for prompt delivery.