S-95348A112 0.657" ID x 1.323" OD ASME B18.2.6; ASTM F959 Type A490 Tension-Indicating Structural Washers

Tension-Indicating Structural Washers

1257FA00028 Tension-Indicating Structural Washers
1257FA00028 Tension-Indicating Structural Washers

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

Part No.
Part No. 1257FA00028
Equivalent to mcmaster :
95348A112

Basic Information

System of Measurement Inch
Washer Type Tension Indicating
Specifications Met ASME B18.2.6; ASTM F959 Type A490
Features Orange Tension-Indicating Dye

Dimension Parameters

ID 0.657"
OD 1.323"
Thickness 0.126-0.220"

Material & Strength Parameters

Material Zinc-Plated Steel
Hardness Rockwell C37

Installation & Application Parameters

For Screw Size 5/8"

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 24,000 lbs.
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Visual load verification through orange tension-indicating dye ensures immediate confirmation of proper installation and tension levels
  • Exceptional 24,000 lbs tension capacity provides reliable performance in high-stress structural applications
  • Zinc-plated steel construction offers superior corrosion resistance and extended service life in demanding environments
  • Rockwell C37 hardness rating guarantees consistent mechanical strength and resistance to deformation under heavy loads
  • Precision dimensional specifications (0.657" ID, 1.323" OD) ensure perfect fit for 5/8" screw applications
  • Industry-standard compliance with ASME B18.2.6 and ASTM F959 Type A490 ensures engineering reliability and interchangeability
  • Regulatory compliance with RoHS 3 and REACH standards meets global environmental and safety requirements

Professional Applications & Engineering Value

This tension indicating washer addresses critical safety concerns in structural bolting applications where proper preload is essential. The orange tension-indicating dye provides immediate visual confirmation that specified tension levels have been achieved, eliminating guesswork in critical connections. Engineered from zinc-plated steel with Rockwell C37 hardness, these washers maintain dimensional stability under extreme loads while providing corrosion protection. Ideal for structural steel construction, heavy machinery assembly, and industrial equipment where 24,000 lbs tension capacity ensures joint integrity. The combination of visual verification and robust material properties makes these washers essential for applications requiring documented proof of proper installation and long-term reliability in demanding industrial environments.

Specification Summary & Compliance

This tension indicating washer features precise dimensional specifications with 0.657" inner diameter, 1.323" outer diameter, and thickness ranging from 0.126" to 0.220" for optimal performance with 5/8" fasteners. Manufactured to exacting ASME B18.2.6 and ASTM F959 Type A490 standards, ensuring consistent quality and performance in structural applications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and workplace safety standards. The mechanical properties, including Rockwell C37 hardness and 24,000 lbs tension indication capability, provide engineers with reliable performance data for critical connection design and verification.

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