S-92908A339 0.156" ID x 0.562" OD Finishing Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from the black-oxide steel finish, extending service life in demanding environments.
• Flush surface installation with a 100° countersink angle, preventing snagging and ensuring a smooth, professional finish.
• Precise fit for No. 6 screws with a 0.156" ID, ensuring secure fastening and reducing the risk of loosening under vibration.
• Enhanced load distribution from the 0.562" OD, minimizing surface pressure and material stress.
• Exceptional durability provided by Rockwell 15N80 hardness, resisting deformation under high clamping forces.
• Global compliance assurance with RoHS 3 and REACH standards, meeting international regulatory requirements for industrial use.
• Dimensional consistency in the inch system, guaranteeing reliable performance and interchangeability in assemblies.

Professional Applications & Engineering Value

Engineered for industrial and mechanical assemblies, this 100° countersunk washer solves critical challenges like surface protrusion and uneven load distribution. The black-oxide steel construction offers excellent resistance to rust and wear, making it ideal for automotive, machinery, and outdoor equipment where exposure to moisture and stress is common. Its precise 0.156" ID ensures a snug fit with No. 6 screws, reducing play and enhancing joint integrity. The 0.562" OD provides a broad bearing surface, distributing forces evenly to prevent damage to softer materials. This design minimizes maintenance needs and boosts the longevity of fastened components in heavy-duty applications, delivering reliable performance under dynamic loads.

Specification Summary & Compliance

This washer features a 100° countersink angle and dimensions including an ID of 0.156", OD of 0.562", and thickness ranging from 0.084" to 0.104" for precise fit and function. Manufactured to standard inch system tolerances, it ensures compatibility with No. 6 screw sizes and consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU), including exemption 6(a) for lead in steel, and REACH (EC 1907/2006) as of January 17, 2023, adhering to environmental and safety regulations for industrial components.