Value Collection HNI5037LH-100BX Hex Nut 3/8-16 Lh Grade 2

Product Description

The VALUE COLLECTION HNI5037LH-100BX is a 3/8-16 left-hand thread hex nut manufactured from Grade 2 steel with a bright, uncoated finish. It measures 9/16 inches across the flats and 21/64 inches in height, conforming to UNC thread standards. Left-hand thread fasteners are specified in applications where standard right-hand rotation would cause a nut to loosen under operational torque — such as rotating shafts, pedal assemblies, and certain equipment anchoring points. This package contains 100 nuts and is sold as a single packaged unit weighing 1 pound. Plumbers, HVAC technicians, electricians, and general tradespeople stock these for specialty fastener needs on the job.

Left-hand thread hex nuts in 3/8-16 UNC are used in mechanical assemblies where counter-rotation forces are present. Common applications include equipment tie-downs, fan blade retention hardware, bicycle components, industrial machinery, and any installation where a conventionally threaded fastener would back out under service conditions. The Grade 2 steel construction suits general-purpose, non-structural fastening in both residential and light commercial settings where high-tensile fasteners are not required.

Key Features

• Left-hand UNC thread prevents loosening under counter-clockwise rotational forces
• 3/8-16 thread size fits standard 3/8-inch left-hand threaded fastener applications
• Grade 2 steel construction suitable for general-purpose, light-duty fastening
• Bright, uncoated finish for standard indoor or protected installations
• 9/16-inch across-flats dimension accepts standard 9/16-inch wrenches and sockets
• Pack of 100 nuts for job-site inventory and bulk repairs

Compatibility

Designed for use with 3/8-16 UNC left-hand threaded bolts and studs in general mechanical and trade applications where left-hand fastener engagement is required.

Installation Notes

Left-hand thread nuts tighten counter-clockwise and loosen clockwise — confirm thread direction before installation to avoid cross-threading or stripping. Use a properly sized 9/16-inch wrench or socket for installation; avoid over-torquing Grade 2 fasteners, as they have lower tensile strength than Grade 5 or Grade 8 hardware. De-energize or lock out any equipment before accessing rotating assemblies that use left-hand fasteners. Follow applicable mechanical codes and manufacturer torque guidelines for the assembly being serviced.