S-99612A290 2"-12 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
- Space-saving thin profile design enables installation in tight, confined spaces where standard nuts won't fit
- Exceptional mechanical strength with Grade 5 classification ensures reliable performance under high-stress applications
- Precise left-hand threading (2"-12 UNF) provides secure fastening in specialized machinery and reverse-rotation systems
- Consistent thread engagement with Class 2B fit guarantees proper mating with male threads and vibration resistance
- Easy external hex drive installation allows for standard wrench access and straightforward maintenance
- Full regulatory compliance with RoHS 3 and REACH standards meets international industrial safety requirements
Professional Applications & Engineering Value
This left-hand thread hex nut addresses critical engineering challenges in heavy machinery, automotive, and industrial equipment where reverse-thread applications prevent loosening from counter-rotational forces. The zinc-plated steel construction provides essential corrosion protection for outdoor and high-moisture environments, while the thin profile design solves space limitation issues in compact assemblies. The precision 2"-12 UNF fine threading offers superior vibration resistance compared to coarse threads, making it ideal for high-stress applications requiring maintained clamp load. Engineered with Grade 5 strength, this fastener delivers reliable performance in demanding mechanical systems where failure is not an option.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2B thread fit tolerance for optimal mating compatibility. Meets UNF (Unified National Fine) thread specifications with left-hand direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety. Dimensions: 3" width across flats, 1 3/32" height. Suitable for use with matching Grade 5 bolts and studs in inch system applications.
