S-91847A439 1 1/8"-12 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Space-saving thin profile allows for installation in tight spaces where standard nuts won't fit
• Precise fine thread engagement with UNF 12 threads per inch and Class 2B fit for vibration resistance and reliable clamping force
• Easy installation and removal with standard external hex drive using common wrench tools
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe use in regulated industries
• Consistent dimensional accuracy with 1 11/16" width and 39/64" height for predictable performance in assembly operations
• Right-hand thread design compatible with standard rotation direction for intuitive installation

Professional Applications & Engineering Value

This 1 1/8"-12 UNF thin hex nut delivers critical engineering advantages where space constraints and corrosion resistance are primary concerns. The 18-8 stainless steel material provides excellent protection against rust and chemical exposure, making it suitable for marine equipment, food processing machinery, and outdoor industrial applications. The fine thread spacing (12 TPI) creates more thread contact points compared to coarse threads, resulting in superior vibration resistance and load distribution. The thin hex nut profile solves clearance issues in compact assemblies while maintaining full thread engagement. These features combine to create a reliable industrial fastener that reduces maintenance frequency and prevents thread stripping in high-stress applications, delivering long-term value in mechanical systems requiring precision Class 2B thread fit.

Specification Summary & Compliance

This precision hex nut features 1 1/8"-12 UNF fine threads with Class 2B thread fit per UNF standards, ensuring consistent engagement with mating components. Manufactured to inch system specifications with external hex drive configuration and right-hand thread direction. The nut complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for use in regulated industries and international markets. Dimensional specifications include 1 11/16" width across flats and 39/64" height for reliable performance in demanding mechanical applications.