ASME B18.21.1 Stainless steel and spring steel external tooth lock Washers role characteristics and applications industry solutions

ASME B18.21.1 is a standard the American Society of Mechanical Engineers developed to standardize the dimensional, material, and performance requirements for external tooth-locking washers. Stainless steel external tooth locking washers and, carbon steel external tooth locking washers, spring steel external tooth locking washers are widely used in the threaded connection of the washer; through their special design and materials, they can provide additional tightening force and anti-loosening ability to ensure the reliability and safety of the threaded connection. External tooth lock washers are also known as external tooth washers, external tooth washers, external tooth daisy washers, external tooth meson, and many others. It is mostly used under the bolt head and nut. The main materials of external tooth lock washers are S60C.65Mn or SUS304.316 (A2.A4) and other specially customized materials. Surface treatment: stainless steel hardened and polished natural color or spring steel phosphate black, mechanically galvanized, nickel plated, Dacromet coating treatment. (Manufacturing requirements: 40-48HRC), common specifications: M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20 and so on.

What is the role of the external tooth-locking washer?

The primary function of external tooth-locking washers is to increase the tightening force and anti-loosening ability of the threaded connection. In threaded connections, due to vibration, impact, or temperature changes, the threads tend to loosen automatically, which can lead to loosening and failure of the connection and may hurt the regular operation of the working machine and equipment. External tooth lock washers with unique exterior tooth design. With their special external tooth design, external lock washers tighten force in threaded connections. When the threaded connection is subjected to external forces, the outer tooth lock washer can, through its unique shape and elastic deformation, increase the biting force of the threaded connection, effectively preventing the loosening of the threads.

ASME B18.21.1 Features and advantages of external teeth lock washers

External teeth lock washers have external teeth in the washer ring, which works well with large fastener heads. The outer, inner/crypto lock washer has two internal and two outer teeth on the ring. This provides better security with large fastener heads. Pyramid-type lock washers are suitable for items requiring high tightening torque. Countersunk lock washers are used with flat or oval head screws that have either an 82 or 100-degree countersunk head angle. Domed lock washers distribute the load over a large area and are recommended for use with thin or soft materials that require high torque for holding. Disc lock washers are similar to dome lock washers but can be used in applications requiring less torque or load. ASME B18.21.1 external tooth-locking washers have several features and advantages:

1. Standard specification: ASME B18.21.1 external tooth locking washers are based on internationally recognized standards and specifications developed with uniform dimensions, materials, and performance requirements to ensure product interchangeability and reliability.

2. High-strength materials: ASME B18.21.1 external tooth lock washers are usually high-strength alloy steel with excellent wear resistance, corrosion resistance, and high-temperature performance and can be used in harsh environments.

3. Simple and easy to use: ASME B18.21.1 external tooth lock washers can be inserted directly into the threaded pins or with the nut with quick and easy installation without additional tools and operations.

4. Improvement of tightening force: ASME B18.21.1 external teeth lock washers with a unique design of external teeth in the threaded connection to provide additional tightening force can effectively increase the bite of the threads to prevent loosening.

5. Strong anti-loosening ability: The unique shape and material of ASME B18.21.1 external tooth lock washers give them anti-loosening solid ability, which can ensure the stability of the threaded connection even under high vibration and shock environments.

How do you select and use ASME B18.21.1 external tooth-locking washers?

1. Correct size selection: according to the needs of selecting the appropriate ASME B18.21.1 external teeth lock washer size, to ensure that it and the threaded pin or nut have an excellent fit to meet the requirements of fastening and anti-loosening.

2. Reasonable installation location: ASME B18.21.1 male lock washers should be appropriately installed on the threaded pins or nuts to seal tightly with the threaded components and not corrode, wear, or deform.

3. Periodic Inspection and Maintenance: Threaded connections using ASME B18.21.1 male lock washers should be inspected and maintained regularly to ensure the integrity and performance of the male lock washers and to replace damaged or deteriorated washers promptly.

ASME B18.21.1 external teeth lock washers application areas

External tooth-locking washers are typically used in applications involving vibration and possible slippage of fasteners. Industries typically use transportation-related lock washers (automotive, aircraft, marine, power, machinery, and equipment). External tooth-locking washers can also be used in household appliances such as air handlers and washing machines (washing machines). ASME B18.21.1 External tooth locking washers are widely used in a variety of mechanical equipment and industrial applications, for example:

1. Automotive industry: ASME B18.21.1 external tooth lock washers are commonly used to bolt automotive engines, wheels, and drivelines and ensure the safety and reliability of the vehicle during high-speed operation.

2. Aerospace: ASME B18.21.1 external tooth lock washers are widely used in aerospace equipment and aircraft structural connections to ensure stability and safety in high-altitude environments.

3. Power equipment: ASME B18.21.1 external tooth lock washers are commonly used in power plants, transmission line substations, and other power equipment bolted to resist external vibration and the influence of electromagnetic fields.

4. Mechanical Manufacturing: ASME B18.21.1 external toothlock washers are suitable for threaded connections in all mechanical and industrial machinery to improve their robustness and reliability.

ASME B18.21.1 external toothlock washers are vital as critical fasteners in the threaded connection. Correct selection and use of ASME B18.21.1 outer tooth lock washers can not only improve the tightening force of the threaded connection and anti-loosening ability to ensure the stability and safety of the equipment but also reduce the frequency of maintenance and replacement, improve efficiency and economic benefits.

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