S-3573A12 0.173" ID x 0.297" OD Heavy-Vibration-Resistant Spring Lock Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with Acetal Plastic construction, ideal for harsh chemical environments where metal washers would fail
• Excellent temperature stability maintaining performance across extreme conditions from -40°F to 212°F
• Consistent spring tension with Rockwell M80 hardness ensuring reliable locking force throughout service life
• Dual-standard compatibility fitting both No. 8 (inch) and M4 (metric) screw systems for versatile applications
• Precision dimensional control with 0.173" ID and 0.297" OD ensuring perfect fit and uniform load distribution
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global market acceptance
• Electrical insulation properties preventing galvanic corrosion in multi-material assemblies

Professional Applications & Engineering Value

This Acetal Plastic Spring Lock Washer delivers critical engineering solutions where traditional metal fasteners fall short. The spring lock design maintains constant tension under vibration, preventing screw loosening in dynamic equipment while the white Acetal material offers excellent chemical resistance against solvents, fuels, and cleaning agents. Engineered for No. 8 and M4 screw applications, this washer provides reliable performance in electrical enclosures, food processing equipment, and medical devices where non-conductivity and corrosion resistance are paramount. The temperature range from -40°F to 212°F ensures stability in both freezing outdoor applications and heated industrial environments, making it an ideal choice for automotive, aerospace, and industrial machinery assemblies requiring durable plastic fastening solutions.

Specification Summary & Compliance

This spring lock washer features precise dimensions with 0.173" inner diameter and 0.297" outer diameter, manufactured from Acetal Plastic with Rockwell M80 hardness rating. The product complies with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) standards regarding substance restrictions. Suitable for both inch (No. 8) and metric (M4) screw systems, it maintains dimensional integrity across the specified temperature range while meeting industry requirements for chemical resistance and electrical insulation properties in technical applications.