ASTM A320 Grade L7 Stud Bolt, API 20E, Alloy Steel, 1-3/8 IN

The ASTM A320 Grade L7 Stud Bolt is a high-strength alloy steel fastener engineered for critical service in extreme temperature environments. Designed to API 20E specifications, this stud bolt features a 1-3/8 inch diameter with 8UN thread pitch and 140 mm overall length, delivering exceptional tensile strength and impact resistance at cryogenic and elevated temperatures. The chromium-molybdenum alloy construction provides superior hardness and durability, making it ideal for pressure vessel flanges, valve bonnets, and high-pressure piping systems.