Value Collection JNFI5031LH-100BX Hex Nut 5/16-24 Lh Grade 2

Product Description

The VALUE COLLECTION JNFI5031LH-100BX is a 5/16-24 UNF left-hand thread hex nut manufactured from Grade 2 steel with a bright, uncoated finish. This nut measures 0.5 inches across the flats and 3/16 inches in height, conforming to standard hex nut geometry for use with 5/16-inch left-hand threaded fastener assemblies. Left-hand thread designation means the nut tightens counterclockwise and loosens clockwise, making it suited for applications where standard right-hand thread fasteners would back out under rotational load. Sold in a box quantity of 100 units, this nut is a practical choice for production, MRO, and field service stock.

This hex nut is used in mechanical assemblies where left-hand thread engagement is required to prevent self-loosening caused by rotational forces. Common applications include rotating shaft assemblies, pedal spindles, turnbuckles, and equipment where the fastener opposes the primary direction of rotation. The uncoated bright finish is suitable for indoor or controlled environments. Installation is performed by maintenance technicians, machinists, and trade professionals working on mechanical systems, conveyances, or equipment frames requiring left-hand threaded hardware.

Key Features

• Left-hand UNF thread (5/16-24) resists loosening in counterclockwise-rotating assemblies
• Grade 2 steel construction provides adequate tensile strength for standard mechanical fastening applications
• Bright uncoated finish for applications where coating or plating is not required
• 0.5 inches across flats — fits standard 1/2-inch hex wrench or socket
• 3/16-inch height conforms to standard hex nut profile for 5/16-inch fasteners
• Box quantity of 100 supports production runs and bulk MRO restocking

Compatibility

Designed for use with 5/16-24 UNF left-hand threaded bolts, studs, and shafts. Confirm left-hand thread designation on mating fastener before installation, as this nut is not interchangeable with standard right-hand thread hardware of the same nominal size.

Installation Notes

Left-hand thread nuts tighten counterclockwise and loosen clockwise — verify thread direction before applying torque to avoid cross-threading. Use a properly sized 1/2-inch hex wrench or socket. Ensure the mating fastener is free of debris and the threads are clean and undamaged prior to assembly. Do not mix left-hand and right-hand threaded components in the same fastener stack.