S-95318A125 28.35 mm ID x 54.36 mm OD ASME B18.2.6M; ASTM F959 Tension-Indicating Structural Washers
Tension-Indicating Structural Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Visual load verification through bright orange tension-indicating dye ensures precise bolt preload and prevents under/over-tightening in critical assemblies.
- High tensile strength capacity of 267,000 N provides reliable performance in heavy-duty structural and industrial applications.
- Superior corrosion resistance with galvanized steel construction extends service life in harsh or outdoor environments.
- Consistent hardness (Rockwell C37) guarantees dimensional stability and resistance to deformation under high stress.
- Accurate dimensional fit with 28.35mm ID and 54.36mm OD ensures proper alignment and load distribution for M27 bolts.
- Compliance with major industry standards (ASME B18.2.6M, ASTM F959) assures quality, interchangeability, and engineering reliability.
- Environmental regulation compliance with RoHS 3 and REACH supports sustainable and safe usage in regulated markets.
Professional Applications & Engineering Value
This M27 tension indicating washer addresses critical challenges in structural bolting and heavy machinery by providing a reliable method to verify bolt preload—essential for preventing joint failure. The Class 8.8 galvanized steel construction offers high strength and corrosion protection, making it ideal for bridges, construction equipment, and industrial frameworks exposed to dynamic loads and weather. The orange tension-indicating dye visibly flattens at specified torque, enabling quick inspection and reducing human error during installation. Engineered to ASME B18.2.6M and ASTM F959, it ensures consistent performance in applications where safety and precision are non-negotiable.
Specification Summary & Compliance
This washer meets precise dimensional tolerances with an ID of 28.35mm, OD of 54.36mm, and thickness ranging 4.000mm–7.000mm, designed for M27 screw sizes. It conforms to ASME B18.2.6M and ASTM F959 specifications for mechanical properties and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards.
