S-92150A225 0.42" ID x 0.832" OD MS51859-8 Mil. Spec. Plastic Washers

Key Features & Benefits at a Glance

• Excellent Electrical Insulation - Nylon construction prevents electrical conductivity, enhancing safety in electrical assemblies
• Superior Chemical Resistance - Withstands exposure to oils, solvents, and many chemicals without degradation
• Lightweight & Corrosion-Proof - Plastic material eliminates rust concerns while reducing overall assembly weight
• Vibration Resistance - Nylon's natural flexibility helps maintain fastener tension under dynamic loads
• Surface Protection - Prevents galling and damage to mating surfaces while distributing load evenly
• High Temperature Performance - Maintains integrity in environments up to 180°F (82°C)
• Regulatory Compliance Ready - Meets MS51859-8 specifications and REACH requirements for global applications

Professional Applications & Engineering Value

These nylon plastic flat washers provide critical solutions for industries where metal fasteners fall short. The 3/8" size with precise 0.42" ID and 0.832" OD dimensions ensures perfect fit for standard fasteners while the white nylon material offers inherent advantages in electrical applications, food processing equipment, and marine environments where corrosion resistance is paramount. Engineers specify these MS51859-8 compliant washers for their ability to prevent galvanic corrosion between dissimilar metals, reduce noise in vibrating assemblies, and provide consistent performance across temperature variations. The REACH compliance ensures these components meet stringent environmental standards for industrial applications worldwide, making them ideal for OEM manufacturing and maintenance operations requiring reliable, non-conductive spacing and load distribution.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.42" inner diameter, 0.832" outer diameter, and thickness ranging from 0.040" to 0.065" for 3/8" screw size applications. Manufactured to MS51859-8 military specification standards, these washers demonstrate consistent dimensional accuracy and material properties. The product is REACH (EC 1907/2006) compliant as of 06/14/2023, addressing 235 Substance of Very High Concern (SVHC) requirements. With a maximum service temperature of 180°F, these nylon washers provide reliable performance while meeting critical industry specifications for quality and environmental responsibility.