S-91102A009 0.174" ID x 0.293" OD ASME B18.21.1 Split Lock Washers

Split Lock Washers

1307FA00070 Split Lock Washers
1307FA00070 Split Lock Washers

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

Part No.
Part No. 1307FA00070
Equivalent to mcmaster :
91102A009

Basic Information

System of Measurement Inch
Washer Type Split Lock
Specifications Met ASME B18.21.1

Dimension Parameters

ID 0.174"
OD 0.293"
Thickness 0.040"

Material & Strength Parameters

Material Zinc-Plated Steel
Hardness Rockwell C38

Installation & Application Parameters

For Screw Size No. 8

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant

Special Type Parameters

Split Lock Washer Type Standard
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior vibration resistance due to the split lock design and Rockwell C38 hardness, preventing fastener loosening in high-stress applications
  • Enhanced corrosion protection with zinc-plated steel construction, extending service life in various industrial environments
  • Precise fit for No. 8 screws with 0.174" ID and 0.293" OD, ensuring easy installation and reliable performance
  • Optimal spring action from the 0.040" thickness and standard split design, maintaining constant tension under dynamic loads
  • Guaranteed dimensional accuracy through compliance with ASME B18.21.1 standards, ensuring consistent quality and interchangeability
  • Safe for regulated industries with full RoHS 3 and REACH compliance, meeting strict environmental and safety requirements
  • Durable mechanical performance from the hardened steel material, providing long-term reliability in heavy-duty fastening systems

Professional Applications & Engineering Value

This No. 8 split lock washer delivers critical engineering value by solving persistent vibration-induced loosening in mechanical assemblies. The zinc-plated steel construction provides essential corrosion resistance for industrial equipment, automotive components, and outdoor machinery exposed to harsh conditions. Its standard split lock washer type creates continuous spring tension that compensates for thermal expansion and material relaxation, maintaining clamp force where traditional flat washers fail. The Rockwell C38 hardness ensures the washer maintains its spring properties through repeated loading cycles, making it ideal for vibration resistant applications in manufacturing, construction, and transportation sectors where fastener security is non-negotiable.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 specifications with precise dimensions: 0.174" ID, 0.293" OD, and 0.040" thickness for No. 8 screw applications. The inch system measurement ensures compatibility with standard imperial fasteners. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and regulatory acceptance for industrial use worldwide.

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