Our DIN EN 1665 Heavy Series Hexagon Flange Bolts with Reduced Shank (Type R) are engineered for seamless integration into automotive assembly processes: Key Advantages for Your Applications: Significant Weight Reduction: Contributes to overall vehicle lightweighting efforts, improving fuel economy and reducing emissions. High Tensile Strength: Maintains the robust fastening capabilities required for heavy-duty automotive applications. Enhanced Fatigue Life: Potentially improves the durability and longevity of critical bolted joints under dynamic loading. Streamlined Assembly: Integrated flange eliminates the need for washers, saving time and reducing complexity. Optimized Material Efficiency: Contributes to cost-effective and sustainable manufacturing practices. Secure and Reliable Connections: The flange provides a large bearing surface for even load distribution and improved vibration resistance. Ideal for: Chassis and Suspension Systems: Securing critical components like subframes, control arms, and axle mounts where high strength and weight optimization are paramount. Powertrain Integration: Fastening engine and transmission mounts, contributing to reduced overall vehicle weight without compromising structural integrity. Body Structure Assembly: Connecting heavy-duty structural elements where both strength and weight are critical considerations. Battery Pack Integration: Securing battery trays and mounting brackets, contributing to the overall weight management of the electric vehicle. Heavy-Duty Automotive Applications: Ideal for trucks, buses, and other commercial vehicles where weight reduction directly translates to increased payload capacity and fuel efficiency. Product NameStandardMaterial & FinishDiameterLengthHexagon Flange Bolts - Reduced ShankGB/T 5788-1986Carbon Steel, GalvanizedM620 mmHexagon Flange Bolts - Reduced ShankGB/T 5788-1986Carbon Steel, GalvanizedM825 mmHexagon Flange Bolts - Reduced ShankGB/T 5788-1986Carbon Steel, GalvanizedM1030 mmHexagon Flange Bolts - Reduced ShankGB 5790-1986Alloy Steel, DacrometM1240 mmHexagon Flange Bolts - Reduced ShankGB 5790-1986Alloy Steel, DacrometM1650 mmHexagon Flange Bolts - Reduced ShankISO 15071:201134CrMo4 Steel, Zinc PlatedM6 (1/4")1.5" (38.1 mm)Hexagon Flange Bolts - Reduced ShankISO 15072R:201442CrMo4 Steel, PlainM8 (5/16")2" (50.8 mm)Hexagon Flange Bolts - Reduced ShankDIN 6922:1983C35 Steel, Hot-Dip GalvanizedM1030 mmHexagon Flange Bolts - Reduced ShankDIN EN 1665:1998C45 Steel, PhosphatedM1240 mmHexagon Flange Bolts - Reduced ShankJIS B 1189:2014SCM435 Alloy Steel, Zn-NiM825 mm