Value Collection JNI2031LH-100BX Hex Nut 5/16-18 Left Hand

Product Description

The VALUE COLLECTION JNI2031LH-100BX is a 5/16-18 left-hand thread hex nut made from Grade 2 steel with a bright, uncoated finish. It measures 0.5 inches across the flats and 3/16 inches in height, conforming to UNC thread standards. Left-hand thread fasteners turn counterclockwise to tighten, making them the correct choice for applications where standard right-hand nuts would loosen under rotation or vibration. This nut is sold in a box of 100 units and is a general-purpose industrial fastener suited for mechanical assemblies, equipment maintenance, and trade installations requiring left-hand thread components.

This hex nut is used in applications where left-hand threading is required to prevent self-loosening due to rotational forces. Typical use cases include fan blade assemblies, rotating shafts, pedal spindles, and machinery where counterclockwise shaft rotation would back off a standard right-hand fastener. Plumbers, HVAC technicians, electricians, and general mechanical contractors working on rotating equipment or specialty assemblies will encounter this requirement. The 5/16-18 UNC thread size is a common fractional thread found across a wide range of light- to medium-duty mechanical systems. The 100-piece box quantity supports shop stock and job-site inventory needs.

Key Features

• Left-hand thread direction prevents loosening under counterclockwise rotation
• 5/16-18 UNC thread size for compatibility with standard fractional fastener systems
• Grade 2 steel construction provides adequate tensile strength for general-purpose use
• Bright uncoated finish — suitable for dry interior applications or where coating would interfere with fit
• 0.5 inches across flats accepts a standard 1/2-inch wrench or socket
• Packaged in a 100-piece box for bench stock and job-site replenishment

Compatibility

Designed for use with 5/16-18 UNC left-hand thread bolts and studs in general mechanical and trade assemblies requiring left-hand thread fasteners.

Installation Notes

Left-hand thread fasteners tighten counterclockwise and loosen clockwise — confirm thread direction before installation to avoid cross-threading or stripping. Power down or de-energize any equipment before servicing fasteners on mechanical assemblies. A standard 1/2-inch wrench or socket is required for installation and removal. Follow applicable equipment manufacturer torque guidelines; do not estimate torque values from fastener grade alone without referencing the appropriate specification.