Value Collection HNFI5050LH-100BX Hex Nut 1/2-20 Left Hand

Product Description

The VALUE COLLECTION HNFI5050LH-100BX is a 1/2-20 UNF left-hand thread hex nut manufactured from Grade 2 steel with a bright, uncoated finish. It measures 0.75 inches across the flats and 7/16 inches in height, conforming to standard hex nut geometry for use with a 3/4-inch wrench. Left-hand thread direction means the nut tightens counterclockwise, making it suited for applications where standard right-hand fasteners would loosen under rotational load. This box of 100 nuts is used by maintenance technicians, pipefitters, millwrights, and general contractors on mechanical assemblies requiring left-hand fastener configurations.

Left-hand thread hex nuts in 1/2-20 UNF are typically found in mechanical drive systems, rotating shaft assemblies, and equipment where vibration or rotational direction would back off a conventional fastener. Common applications include industrial machinery, automotive components, specialty equipment mounting, and replacement fastener work where OEM assemblies specified left-hand thread hardware. This box quantity of 100 units supports production, maintenance, or repair environments with recurring fastener demand.

Key Features

• Left-hand thread direction prevents loosening in counterclockwise-rotating assemblies
• 1/2-20 UNF thread form for fine-pitch engagement and improved load distribution
• Grade 2 steel construction suitable for general mechanical and structural fastening
• Bright uncoated finish — no added plating that could affect dimensional tolerances
• 0.75 inches across flats, compatible with standard 3/4-inch hex tooling
• Box of 100 units reduces per-unit cost for production and maintenance stock

Compatibility

Designed for use with 1/2-20 UNF left-hand thread fasteners and mating bolts or studs in the same thread standard. Verify left-hand thread designation on mating hardware before installation.

Installation Notes

Left-hand thread fasteners tighten counterclockwise and loosen clockwise — confirm thread direction matches mating hardware before starting installation. Use a calibrated torque wrench sized for 3/4-inch hex drive and follow the applicable torque specification for Grade 2 steel in the equipment service documentation. Inspect mating threads for damage or contamination before assembly. Do not mix left-hand and right-hand thread fasteners in the same joint.