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Regular Split Lock Washer Plain Finish

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Regular Split Lock Washer with Plain Finish – Classic Fastening Security You Can Trust

When you need a simple yet effective way to keep nuts and bolts tight, regular split lock washers with plain finish are the reliable choice trusted by professionals across industries. These washers are engineered to prevent loosening caused by vibration, thermal cycling, and dynamic loads, making them an essential component in automotive, construction, and general industrial applications.

Crafted from carbon steel or alloy steel, these washers are heat-treated for added strength and durability. The "split" or helical shape allows the washer to bite into the nut and base material, creating friction and resistance that helps maintain tension in the assembly. The plain finish (uncoated) is ideal for indoor, dry environments or applications where appearance and surface protection are not primary concerns.

Material & Finish:

  • Material: Medium carbon steel or alloy steel

  • Finish: Plain (uncoated) for cost-effective indoor use

Dimensions & Tolerances:

  • Sizes available from #4 through 1-1/2"

  • Tolerances conform to ASME B18.21.1

  • Uniform inner and outer diameters for proper alignment and even load distribution

Mechanical Properties:

  • Spring action creates continuous pressure to resist loosening

  • Can handle moderate torque loads without deforming

  • Designed for use with standard bolts and nuts, including Grades 2 through 5

Standard Compliance:

  • Meets ASME B18.21.1 and relevant SAE or DIN specifications

Applications:

  • Automotive and heavy truck assemblies

  • HVAC systems and mechanical equipment

  • Steel fabrication and maintenance operations

  • Agricultural and light industrial machinery

Choose regular split lock washers with plain finish when your job calls for tried-and-true fastening security—without added cost or complexity. Need help matching washer specs to your bolt size or grade? We’re here to help you get it right the first time.