S-93785A150 0.25" ID x 0.562" OD ASME B18.21.1 Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal stability for reliable performance in environments ranging from -50°F to 500°F, preventing deformation under extreme heat.
• Superior chemical resistance due to PEEK plastic construction, ideal for harsh industrial and chemical processing applications.
• High mechanical strength and durability with a Rockwell M103 hardness, ensuring long service life and resistance to wear.
• Precise dimensional fit with a 0.25" ID and 0.562" OD, designed specifically for No. 12 screws to provide secure fastening and vibration resistance.
• Compliance with industry standards including ASME B18.21.1, ensuring consistent quality and interchangeability in professional assemblies.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for safe use.
• Versatile thickness range from 0.051" to 0.080" for adaptable load distribution and spacing in various mechanical setups.

Professional Applications & Engineering Value

This PEEK plastic flat washer is engineered to address critical challenges in high-temperature and corrosive environments, such as those found in aerospace, automotive, and chemical processing industries. Its beige color and PEEK material grade provide excellent resistance to a wide range of chemicals, solvents, and steam, reducing the risk of fastener failure and maintenance downtime. The flat washer design ensures even load distribution and prevents surface damage, while the precise 0.25" ID and 0.562" OD dimensions offer a perfect fit for No. 12 screw applications, enhancing assembly integrity. By withstanding temperatures from -50°F to 500°F, it solves thermal expansion and insulation issues, making it a reliable choice for high-temperature washers in demanding engineering projects.

Specification Summary & Compliance

This washer adheres to ASME B18.21.1 specifications for dimensional accuracy and performance in inch system measurements. It features an inner diameter of 0.25", outer diameter of 0.562", and thickness ranging from 0.051" to 0.080". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use.