S-90083A031 3/8"-16 Hex Nuts

Key Features & Benefits at a Glance

• Left-hand thread design provides secure fastening in applications requiring reverse rotation resistance, preventing accidental loosening under counter-clockwise motion.
• Thin profile (7/32" height) enables use in space-constrained assemblies where standard nuts are too bulky, saving valuable installation space.
• Grade 2 steel construction delivers reliable strength and durability for general industrial applications without unnecessary material cost over-specification.
• Class 2B thread fit ensures smooth assembly with mating components while maintaining consistent clamping force in vibration-prone environments.
• UNC coarse threading allows for quicker installation and reduced cross-threading risk compared to fine thread alternatives.
• External hex drive design offers compatibility with standard wrenches for straightforward installation and removal with common tools.
• RoHS 3 and REACH compliance guarantees environmental safety and regulatory adherence for global industrial supply chains.

Professional Applications & Engineering Value

This left-hand thread hex nut addresses critical engineering challenges in applications where standard right-hand threads would naturally loosen due to rotational forces. The 3/8"-16 UNC coarse thread configuration provides excellent engagement in softer materials and faster assembly in production environments. Manufactured from Grade 2 steel, this fastener delivers optimal strength-to-weight ratio for general industrial use while the thin profile design solves space limitation issues in compact machinery, electrical enclosures, and equipment maintenance. The Class 2B thread fit ensures reliable performance in vibrating systems commonly found in conveyor systems, rotating equipment, and automotive applications where vibration-induced loosening must be prevented. This combination of reverse threading and precision manufacturing makes it indispensable for specialized mechanical systems requiring deliberate disassembly direction.

Specification Summary & Compliance

This thin hex nut features precise 3/8"-16 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring interchangeability with mating components. The nut measures 9/16" across flats with a 7/32" height profile. Manufactured to Grade 2 mechanical properties, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications with strict substance restrictions.