S-95318A113 0.785" ID x 1.478" OD ASME B18.2.6; ASTM F959 Type A325 Tension-Indicating Structural Washers

Tension-Indicating Structural Washers

1257FA00012 Tension-Indicating Structural Washers
1257FA00012 Tension-Indicating Structural Washers

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

Part No.
Part No. 1257FA00012
Equivalent to mcmaster :
95318A113

Basic Information

System of Measurement Inch
Washer Type Tension Indicating
Specifications Met ASME B18.2.6; ASTM F959 Type A325
Features Orange Tension-Indicating Dye

Dimension Parameters

ID 0.785"
OD 1.478"
Thickness 0.142-0.230"

Material & Strength Parameters

Material Galvanized Steel
Hardness Rockwell C37

Installation & Application Parameters

For Screw Size 3/4"

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 28,000 lbs.
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Ensures precise bolt tension verification with orange tension-indicating dye that provides clear visual confirmation of proper installation
  • Delivers exceptional 28,000 lbs load capacity for reliable performance in demanding structural applications
  • Provides superior corrosion resistance through galvanized steel construction for extended service life in harsh environments
  • Maintains consistent hardness and durability with Rockwell C37 rating to prevent deformation under heavy loads
  • Offers perfect compatibility with 3/4" screws through precise 0.785" ID and 1.478" OD dimensions
  • Guarantees industry compliance with ASME B18.2.6 and ASTM F959 Type A325 specifications for structural integrity
  • Ensures environmental responsibility with full RoHS 3 and REACH compliance for global industrial use

Professional Applications & Engineering Value

This tension indicating washer solves critical safety concerns in structural bolting applications by providing visual confirmation of proper installation tension. The galvanized steel construction combined with Rockwell C37 hardness ensures the washer maintains its structural integrity under the specified 28,000 lbs load capacity, preventing joint failure in heavy-duty industrial applications. The distinctive orange tension-indicating dye offers immediate visual feedback, eliminating guesswork during installation of 3/4" screws in critical structural connections. This engineering solution is particularly valuable in construction, bridge building, and industrial machinery where bolt tension accuracy directly impacts structural safety and longevity.

Specification Summary & Compliance

This tension indicating washer features precise dimensional specifications with 0.785" ID, 1.478" OD, and thickness ranging from 0.142" to 0.230". Manufactured to exacting ASME B18.2.6 and ASTM F959 Type A325 standards, ensuring consistent performance in structural applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial components.

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