Paramount PAR17503 Hex Key 1/16 Inch Ball End Long Arm

Product Description

The PARAMOUNT PAR17503 is a long-arm ball-end hex key designed for fastener driving in confined or angled workspaces. The 1/16 inch hex tip accommodates small fasteners where a standard short-arm key cannot reach or pivot freely. Built from steel, this tool delivers the rigidity needed for consistent torque transfer on socket head cap screws and set screws. The ball-end design allows engagement at off-axis angles, which is particularly useful when clearance is limited. At 3 inches overall length, the long arm provides additional leverage over compact versions of the same hex size. This tool is used across HVAC, plumbing, electrical, and mechanical service work wherever small hex fasteners appear.

This hex key is suited for residential and light commercial service applications. Technicians reach for it when adjusting set screws on motor shafts, fan hubs, valve stems, or small mechanical assemblies. The long-arm configuration is favored when fastener access requires extended reach into equipment enclosures or tight panel cavities. It is a hand tool appropriate for any trade professional carrying a standard service kit.

Key Features

• Ball-end tip allows fastener engagement at off-axis angles in restricted spaces
• Long-arm style provides added leverage and extended reach compared to standard-arm hex keys
• 1/16 inch hex size suits small socket head cap screws and set screws
• Steel construction delivers durability and consistent torque transfer
• 3 inch overall length keeps the tool manageable while extending reach
• Inch measurement system; compatible with inch-standard fastener sets

Compatibility

Designed as a standard inch-series hex key for use with 1/16 inch socket head cap screws and set screws found in mechanical assemblies across HVAC, plumbing, electrical, and general trade service applications.

Installation Notes

This is a hand tool requiring no installation. When using a ball-end hex key, apply torque only through the straight-end side of the long arm for maximum drive; use the ball end for positioning and light fastening at angles. Avoid applying excessive side-load force to the ball end, as this can accelerate tip wear on small hex sizes. Keep the tool clean and inspect the tip for rounding before use to prevent fastener damage.