DIN 9021 standard large flat washers are specially designed flat washers with a larger outside diameter than standard flat washers (e.g. DIN 125 or GB97.1). This design provides a larger support area, which helps to distribute the stress on the fastener and reduce damage to the material being secured. These washers are typically used in applications where a larger load bearing surface is required, such as metal structures, mechanical equipment, automotive, construction and other fields.
Carbon Steel: Typically used for general applications.
Stainless Steel: For environments where corrosion resistance is required.
Alloy Steels: Used in applications requiring high strength or high temperature resistance.
Advantage:
Large OD design: Compared to standard size flat washers, DIN 9021 flat washers are notable for their larger outside diameter, which provides a larger support area.
Multiple materials: these washers may be made of different materials such as stainless steel, steel, non-ferrous metals, etc. to suit different corrosion resistance and strength requirements.
Surface treatment: The surface of the washers may be treated with natural color, passivation, plating, etc. to improve corrosion and wear resistance.
Precision Manufacturing: The size and shape of the washers are precisely manufactured according to DIN 9021 to ensure compatibility with other fasteners.
Scope of Application
Structural Steel: Used in steel buildings to connect beams, columns and other structural components, providing a stable and reliable connection.
Machinery and equipment: In machinery and equipment manufacturing, for fixing and adjusting machine parts such as bearings, gears and motors.
Automotive industry: In automotive manufacturing, for connecting automotive components such as chassis and body fixings.
Construction industry: In building and civil engineering, for connecting various structural components, providing stable and reliable connections.
Quality Certification
Hebei Bentley is ISO9001:2015 certified and equipped with relevant certificates for quality assurance. Due to its specific dimensions and performance levels, it is suitable for a wide range of industrial and commercial scenarios including, but not limited to: machine building, construction work, transport, energy industry, timber frame connections.
Quality inspection
Bentley has invested a huge amount of money to builda product testing laboratory, equipped with importedhigh-end instruments:such as thread comprehensivescanners, high temperature tensile testing machines,high frequency fatigue testing machines, etc., to ensurethat all products are strictly tested before leaving thewarehouse to ensure the reliability of customers duringuse.