pishropich
Pishro Pich is a leading importer and supplier of industrial fasteners in Iran, offering a comprehensive range of steel and stainless steel bolts and nuts. The company specializes in supplying hex bolts, socket head cap screws, threaded rods, and stud bolts manufactured in premium stainless steel grades 304 and 316, providing reliable fastening solutions for construction, industrial, petrochemical, marine, and heavy engineering applications.
About pishropich
Stainless steel fasteners in A2 (Type 304) and A4 (Type 316) grades are among the most widely used corrosion resistant fastening solutions across industrial applications. A2 stainless steel is ideal for general engineering, construction, food processing equipment, machinery, and outdoor installations exposed to moisture. A4 stainless steel contains approximately 2–3% molybdenum, providing superior resistance to chlorides, seawater, and aggressive chemicals, making it the preferred choice for marine, petrochemical, pharmaceutical, and water treatment industries. These fasteners are manufactured in accordance with international DIN, ISO, and ASTM standards and are available as hex bolts, socket head cap screws, countersunk screws, threaded rods, stud bolts, hex nuts, lock nuts, and flat washers. Common property classes include A2-50, A2-70, A2-80, A4-70, and A4-80, ensuring reliable mechanical performance and long service life.
The most commonly used stainless steel fastener sizes range from M3 to M30, with M6, M8, M10, M12, M16, M20, and M24 representing the highest demand in industrial and structural applications. Standard bolt lengths typically vary from 6 mm to 300 mm, while threaded rods and stud bolts are commonly supplied in 1, 2, and 3 meter lengths or manufactured to custom specifications. Both coarse and fine metric threads are available to satisfy different engineering requirements, including high vibration, precision assembly, and heavy duty load conditions. Selecting the appropriate stainless steel grade, thread size, length, and property class significantly improves corrosion resistance, joint reliability, maintenance intervals, and overall operational safety in demanding industrial environments.
