S-91841A145 3-56 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments
• Precise thread engagement with Class 2B fit ensuring reliable, vibration-resistant connections
• Fine thread design provides higher tensile strength and better adjustment in tight spaces
• Standard external hex drive allows for easy installation with common wrenches
• Compact 3/16" width and 1/16" height enables use in space-constrained assemblies
• Full compliance with RoHS 3 and REACH regulations for safe, sustainable usage
• UNF thread standard compatibility ensures interchangeability with existing inch-system components

Professional Applications & Engineering Value

This 3-56 UNF fine thread hex nut delivers exceptional performance in precision assemblies where corrosion resistance and reliable fastening are critical. The 18-8 stainless steel material provides excellent durability against moisture, chemicals, and temperature variations, making it suitable for electronics, aerospace, marine, and automotive applications. Its fine thread design offers superior load distribution and resistance to loosening under vibration, while the Class 2B thread fit ensures consistent engagement without galling. The external hex drive and standard profile enable quick installation with standard tools, reducing assembly time and maintenance costs in industrial settings.

Specification Summary & Compliance

Manufactured to exact UNF thread standards with Class 2B thread fit for consistent dimensional accuracy. Dimensions: 3/16" width, 1/16" height. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions adherence. Right-hand thread direction and fine thread spacing meet industry specifications for reliable performance in inch-system applications.