S-91233A114 0.195" ID x 0.41" OD ASME B18.21.1 External-Tooth Lock Washers
External-Tooth Lock 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
- Superior vibration resistance with external teeth that bite into mating surfaces to prevent loosening under dynamic loads
- Enhanced corrosion protection through black oxide steel construction for extended service life in demanding environments
- Consistent performance ensured by Rockwell C40 hardness rating maintaining tooth integrity under repeated stress
- Precise dimensional compatibility with No. 10 screws through 0.195" ID and 0.41" OD for reliable fitment
- Industry-standard compliance with ASME B18.21.1 specifications guaranteeing interchangeability and quality
- Environmental regulation adherence meeting RoHS 3 and REACH requirements for global industrial applications
- Optimized load distribution with 0.018-0.024" thickness providing stable bearing surface without adding bulk
Professional Applications & Engineering Value
These external tooth lock washers deliver critical vibration-resistant performance in mechanical assemblies where dynamic loads and thermal cycling cause conventional fasteners to fail. The black oxide steel construction provides essential corrosion resistance while maintaining the Rockwell C40 hardness needed for teeth to maintain biting action through repeated stress cycles. The external tooth configuration ensures maximum surface contact with both the fastener head and workpiece, distributing clamp load evenly while preventing rotational slippage. Engineered specifically for No. 10 screw applications in inch-system machinery, these washers solve common loosening problems in automotive subsystems, industrial equipment, and heavy-duty electrical enclosures where vibration-induced failures compromise safety and operational continuity.
Specification Summary & Compliance
Manufactured to ASME B18.21.1 dimensional and performance standards with internal diameter of 0.195", outer diameter of 0.41", and thickness range of 0.018-0.024". The external tooth lock washers maintain consistent hardness at Rockwell C40 and full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial supply chains and restricted substance-free applications.
