S-95348A126 37.7 mm ID x 70.36 mm OD ASME B18.2.6M; ASTM F959 Tension-Indicating Structural Washers

Tension-Indicating Structural Washers

1257FA00041 Tension-Indicating Structural Washers
1257FA00041 Tension-Indicating Structural Washers

Image may differ from product. See technical specification for details.

Part No.
Part No. 1257FA00041
Equivalent to mcmaster :
95348A126

Basic Information

System of Measurement Metric
Washer Type Tension Indicating
Specifications Met ASME B18.2.6M; ASTM F959
Features Orange Tension-Indicating Dye
Class Class 10.9

Dimension Parameters

ID 37.7 mm
OD 70.36 mm
Thickness 4.800mm-7.500mm

Material & Strength Parameters

Material Zinc-Plated Steel
Hardness Rockwell C37

Installation & Application Parameters

For Screw Size M36

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant

Special Type Parameters

Tension Indicated 595,000 N
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Accurate tension verification with 595,000 N indication and orange visual dye for immediate bolt load confirmation
  • Exceptional strength and durability from Class 10.9 zinc-plated steel construction for heavy-duty applications
  • Superior corrosion resistance with zinc plating that protects against harsh industrial environments
  • Precise dimensional fit with 37.7 mm ID and 70.36 mm OD ensuring proper alignment with M36 bolts
  • Consistent performance maintained through Rockwell C37 hardness for reliable long-term operation
  • Regulatory compliance assurance meeting ASME B18.2.6M, ASTM F959, RoHS 3, and REACH standards
  • Optimized thickness range (4.800mm-7.500mm) providing flexibility for various joint requirements

Professional Applications & Engineering Value

This M36 tension indicating washer delivers critical engineering value in applications where precise bolt tension is paramount to structural integrity. The Class 10.9 zinc-plated steel construction provides the necessary strength for heavy machinery, structural steel connections, and industrial equipment where vibration and dynamic loads are constant challenges. The innovative orange tension-indicating dye offers visual confirmation of proper installation, eliminating guesswork and preventing both under-tightening (which can lead to joint failure) and over-tightening (which can damage components). This metric tension indicating washer is specifically engineered for demanding environments such as construction, mining equipment, and industrial machinery where reliable bolt tension directly impacts safety and operational continuity.

Specification Summary & Compliance

This tension indicating washer features precise dimensional specifications with 37.7 mm inner diameter and 70.36 mm outer diameter, manufactured to exacting standards. The product complies with ASME B18.2.6M and ASTM F959 specifications for dimensional accuracy and performance requirements. Additionally, it meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards, ensuring environmental responsibility and regulatory adherence for global industrial applications.

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