ASME/ANSI B18.21.1 External Teeth Lock Washers Supplier In China
Ningbo Teng Qi Fasteners Co., Ltd. is a reliable ASME/ANSI B18.21.1 External Teeth Lock Washers supplier, we are committed to providing high-quality fastening solutions that deliver secure and stable connections in demanding applications. With professional experience in stainless steel fastener manufacturing, we strictly control every production step, including material selection, stamping process, tooth forming, and dimensional inspection. Our external teeth lock washers are manufactured with accurate specifications and consistent performance to help prevent fastener loosening caused by vibration, shock, and mechanical movement.
Different from ordinary washer suppliers, we focus on providing customized solutions that meet the specific requirements of global customers. We can supply ASME/ANSI B18.21.1 External Teeth Lock Washers in stainless steel materials such as AISI 304 and AISI 316, with options for different sizes, surface treatments, and packaging requirements. Supported by reliable quality control and export experience, our washers offer excellent corrosion resistance, strong locking ability, and long service life, making them suitable for automotive, machinery, electrical equipment, construction, and industrial applications.
Specification:
ASME/ANSI B18.21.1 External Teeth Lock Washers are manufactured according to the ASME/ANSI standard and are designed to provide enhanced locking performance for threaded fastener assemblies. Featuring teeth extending outward from the washer’s outer edge, these washers create a strong gripping action between the washer and the mating surface, helping prevent bolts, screws, and nuts from loosening under vibration, shock, or dynamic loading conditions. They are available in various sizes and materials to meet different fastening requirements.
| Product name | ASME/ANSI B18.21.1 External Teeth Lock Washers |
|---|---|
| Inner Diamter: | #3-1“ |
| Material: | SS304 SS316 65Mn |
| Surface Treatment | Bright Pickling/Zinc Plated |
| Packaging: | Boxes/cartons into wooden pallets |
Dimension Chart of ASME/ANSI B18.21.1 External Teeth Lock Washers:
The dimension chart of ASME/ANSI B18.21.1 External Teeth Lock Washers provides detailed information about key specifications, including inside diameter, outside diameter, thickness, and tooth dimensions. Manufactured according to the ASME/ANSI B18.21.1 standard, these washers are designed with external teeth extending beyond the outer edge to engage with the bearing surface of the fastener assembly, providing effective resistance against loosening caused by vibration and movement.
| Mon | #6 | #8 | #10 | #12 | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 |
| d max | 0.15 | 0.176 | 0.204 | 0.231 | 0.267 | 0.332 | 0.398 | 0.464 | 0.53 | 0.596 | 0.663 |
| d min | 0.141 | 0.168 | 0.195 | 0.221 | 0.256 | 0.32 | 0.384 | 0.448 | 0.513 | 0.576 | 0.641 |
| dc max | 0.32 | 0.381 | 0.41 | 0.475 | 0.51 | 0.61 | 0.694 | 0.76 | 0.9 | 0.985 | 1.07 |
| dc min | 0.305 | 0.365 | 0.395 | 0.46 | 0.494 | 0.588 | 0.67 | 0.74 | 0.88 | 0.96 | 1.045 |
| h max | 0.022 | 0.023 | 0.024 | 0.027 | 0.028 | 0.034 | 0.04 | 0.04 | 0.045 | 0.045 | 0.05 |
| h min | 0.016 | 0.018 | 0.018 | 0.02 | 0.023 | 0.028 | 0.032 | 0.032 | 0.037 | 0.037 | 0.042 |
ASME/ANSI B18.21.1 Internal Teeth Lock Washers
ASME/ANSI B18.21.1 External Teeth Lock Washers
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Application of ASME/ANSI B18.21.1 External Teeth Lock Washers:
ASME/ANSI B18.21.1 External Teeth Lock Washers are designed for fastening applications where preventing loosening and maintaining connection stability are important. Their external teeth create strong engagement with the contact surface, improving resistance against vibration and movement while helping maintain the reliability of bolted assemblies.
| Application | Details |
|---|---|
| Automotive Industry | ASME/ANSI B18.21.1 External Teeth Lock Washers are widely used in automotive assemblies where fastening reliability is essential. They help secure bolts and screws in components exposed to engine vibration, road impact, and continuous movement, such as engine parts, chassis systems, electrical components, and interior assemblies. |
| Machinery Manufacturing Industry | In industrial machinery, production equipment, and mechanical devices, external teeth lock washers provide additional locking force for threaded connections. Their outward-facing teeth grip the bearing surface firmly, helping prevent fasteners from loosening during long-term operation under vibration or repeated loading conditions. |
| Electrical and Electronic Equipment Industry | These washers are commonly applied in electrical cabinets, motors, control systems, and electronic equipment. They help maintain stable fastening connections while reducing the risk of loosening caused by equipment vibration, ensuring reliable operation of electrical systems. |
| Automation and Robotics Industry | In automated production lines, robotic equipment, and precision machinery, ASME/ANSI B18.21.1 External Teeth Lock Washers are used to improve connection stability in moving assemblies. Their compact design and reliable locking performance make them suitable for applications requiring secure fastening in limited installation spaces. |
| Construction and Engineering Equipment Industry | External teeth lock washers are used in construction machinery, engineering equipment, and structural assemblies where bolts are exposed to dynamic loads and environmental changes. They help maintain fastening integrity and improve the overall durability of assembled structures. |
| Transportation Industry | In railway equipment, trucks, marine equipment, and other transportation systems, these washers provide effective anti-loosening performance for critical fastening points. Stainless steel versions are especially suitable for applications requiring corrosion resistance and long-term reliability. |