Value Collection JNFI5043LH-100BX Hex Nut 7/16-20 Lh Grade 2

Product Description

The VALUE COLLECTION JNFI5043LH-100BX is a 7/16-20 left-hand thread hex nut manufactured from Grade 2 steel with a bright, uncoated finish. It measures 11/16 inches (0.6875 inches) across the flats and 1/4 inch in height. Left-hand thread fasteners are specified in applications where standard right-hand threads would loosen under operational torque — common in rotating assemblies, certain mechanical linkages, and equipment where counterclockwise rotation is present. This nut meets UNF thread standards and does not carry a military specification rating. It is typically installed by millwrights, maintenance mechanics, and equipment technicians working on industrial and mechanical assemblies.

This hex nut is suited for use in mechanical assemblies, industrial equipment, and maintenance applications requiring a left-hand thread fastener. The 7/16-20 thread pitch places it in fine-thread territory, which provides stronger thread engagement and better resistance to vibration-induced loosening compared to coarse-thread equivalents. The uncoated finish is appropriate for indoor or controlled-environment use where corrosion exposure is limited. Packaging quantity is 1 nut per unit, with a minimum order quantity of 5 units.

Key Features

• Left-hand thread direction — prevents loosening in counterclockwise-rotation applications
• 7/16-20 UNF fine thread for increased thread engagement and vibration resistance
• Grade 2 steel construction — standard carbon steel for general mechanical use
• Bright uncoated finish — no added coating, suitable for controlled-environment installations
• 11/16 inch (0.6875 inches) width across flats — fits standard 11/16 inch wrench
• 1/4 inch height — compact profile for space-restricted fastening locations

Compatibility

Designed for use with 7/16-20 left-hand thread fastener applications conforming to UNF thread standards in general industrial and mechanical assemblies.

Installation Notes

Left-hand thread fasteners tighten counterclockwise and loosen clockwise — confirm thread direction before installation to avoid cross-threading or damage. Use an 11/16 inch open-end or box wrench to seat the nut. Verify mating bolt or stud thread specification matches 7/16-20 UNF left-hand before assembly. Do not apply thread-locking compounds or torque values outside the recommendations of the equipment manufacturer or applicable mechanical standards.