S-91853A550 3/4"-16 Locknuts
Locknuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance through cotter pin locking mechanism for reliable performance in high-stress environments
- Excellent corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial conditions
- Precise thread engagement with Class 2B fit ensuring consistent performance and reduced wear
- Enhanced safety and security with 5/32" cotter pin compatibility for critical applications
- Optimal torque transmission through standard external hex drive design for easy installation
- Environmental compliance meeting both REACH and RoHS 3 standards for responsible manufacturing
- Fine thread spacing (UNF 3/4"-16) providing better tension control and superior holding power
Professional Applications & Engineering Value
This 18-8 stainless steel locknut with cotter pin locking mechanism delivers exceptional engineering value in demanding industrial environments where vibration resistance is critical. The UNF fine thread configuration (3/4"-16) combined with Class 2B thread fit ensures precise engagement and maintains clamping force under dynamic loads. The corrosion-resistant properties of stainless steel construction make it ideal for applications exposed to moisture, chemicals, or outdoor elements. The external hex drive facilitates straightforward installation while the integrated cotter pin slot (0.25" min. depth, 0.18" min. width) provides positive mechanical locking, preventing accidental loosening in machinery, automotive, construction, and heavy equipment applications where safety and reliability are paramount.
Specification Summary & Compliance
This external hex locknut features precise Class 2B thread fit with 3/4"-16 UNF fine threads in right-hand direction. Manufacturing specifications include standard hex nut profile with 1-1/8" width and 13/16" height, designed for 5/32" cotter pin compatibility. The product fully complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring responsible material sourcing and manufacturing practices for industrial applications requiring certified components.
