S-99291A430 1"-8 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 distorted thread locking technology that maintains clamping force in high-stress environments
- Exceptional durability with black-oxide steel construction providing corrosion resistance and extended service life
- Heavy-duty performance meeting ASTM Grade C strength requirements for demanding industrial applications
- Reliable thread engagement with Class 2B thread fit ensuring consistent, secure fastening connections
- Easy installation and removal using standard external hex drive compatible with common wrench tools
- Environmental compliance with REACH and RoHS 3 regulations for safe, sustainable manufacturing
- Optimized coarse threading (1"-8 UNC) providing faster assembly and reduced cross-threading risks
Professional Applications & Engineering Value
This heavy-duty locknut with distorted thread technology addresses critical vibration-induced loosening challenges in industrial machinery, construction equipment, and transportation systems. The black-oxide steel construction delivers enhanced corrosion protection while maintaining structural integrity under extreme loads. Engineered with 1"-8 UNC coarse threads and Class 2B thread fit, this external hex locknut ensures reliable performance in applications requiring permanent fastening solutions. The top lock distorted thread design creates consistent friction along the mating surface, providing maintenance-free operation in vibrating environments where conventional nuts would fail. Ideal for heavy equipment, structural assemblies, and industrial machinery requiring ASTM Grade C strength certification.
Specification Summary & Compliance
This locknut features 1"-8 UNC coarse threads with Class 2B thread fit precision manufacturing standards. The external hex drive (1-1/2" width, 55/64" height) conforms to standard hex profile specifications. Manufactured in compliance with ASTM Grade C strength requirements and features REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations. The right-hand thread direction with top lock distorted thread type ensures consistent locking performance across industrial applications.
