Value Collection HNI5031LH-100BX Hex Nut 5/16-18 Lh Grade 2

Product Description

The VALUE COLLECTION HNI5031LH-100BX is a 5/16-18 left-hand thread hex nut made from Grade 2 steel with a bright, uncoated finish. Left-hand thread fasteners are used in applications where standard right-hand threads would loosen under operational torque or rotation, such as rotating shafts, fan assemblies, and certain mechanical linkages. The nut measures 0.5 inches across the flats and 17/64 inches in height, conforming to UNC thread standards. This package contains 100 nuts, suited for maintenance shops, contractors, and field technicians who need a reliable quantity on hand for specialized fastener applications.

This hex nut is used in mechanical, HVAC, plumbing, and general trade applications where left-hand thread fasteners are required to prevent self-loosening due to counter-clockwise rotation. Common install scenarios include fan blade retention, bicycle pedal assemblies, and any rotating component where the operational direction would back off a standard right-hand thread. The uncoated finish is appropriate for dry or controlled indoor environments. Grade 2 steel provides adequate tensile strength for light to medium-duty fastening tasks across residential and light commercial work.

Key Features

• Left-hand thread orientation prevents loosening on counter-rotating components
• 5/16-18 UNC thread size for broad compatibility with standard left-hand thread applications
• Grade 2 steel construction provides reliable light to medium-duty tensile strength
• Bright uncoated finish for use in dry, indoor environments
• 0.5 inches across flats, fits standard 1/2-inch wrench or socket
• Sold in a 100-count pack for shop stock or repeat-use applications

Compatibility

Designed as a left-hand thread replacement or new-install hex nut for mechanical assemblies requiring 5/16-18 UNC left-hand thread fasteners.

Installation Notes

Left-hand thread nuts tighten counter-clockwise and loosen clockwise — always confirm thread direction before installation to avoid cross-threading or stripping. A standard 1/2-inch wrench or socket is required for proper torque application. Ensure mating fastener threads are also left-hand orientation before assembly. Follow applicable mechanical codes and manufacturer torque guidelines for the specific assembly being serviced.