INT Bolts Nuts Threaded Rods Anchor Bolts Washers and Special Fasteners is a brand of Intenfa Group Co. INT Bolts Nuts Fasteners is the manufacturer and exporter ASTM A307 Grade A ASME B18.2.1 Hex Bolts Full Threaded Plain Black with Hot Dip Galvanized (HDG), Zinc Plated, Geomet, Black Oxide, Plain. We export to COSTA RICA. ASTM A307 Grade A ASME B18.2.1 Hex Bolts Full Threaded Plain Black have quality certificates. INT Bolts Nuts Fasteners have DIN, ASTM and ISO standards. We are growing bolts nuts screws threaded rods anchor bolts washers and special fasteners trade with each passing day our experts with knowledge in international trade. INT Bolts Nuts Fasteners has international entity in production, supply and marketing. INT Bolts plan to work more for our vision and mission we want to achieve our goals. INT Bolts manufactures ASTM A307 Grade A ASME B18.2.1 Hex Bolts Full Threaded Plain Black for steel structures, power transmission lines and distribution poles, electric plants, polygonal poles, GSM poles, lighting poles, Wind turbine towers, solar energy, Road Safety Barriers, Highway Guardrail, Railway, Petrochemical Plants, Gas Plants, Piping Lines, Construction, Automotive. Bolts, Hex Head Bolts, nuts, Hex Head Nuts, screws, flat and spring washers, anchor bolts, threaded rods, U-bolts, hooks and eye-bolts are offered with hot dip galvanized (HDG), Zinc plated-electro galvanizing, GEOMET-zinc flake coating or plain coating types options. The products can also be shipped assembled per customer request.