A reference table matching nut driver sizes to the corresponding fastener dimensions is essential for proper tool selection. This table typically lists various driver tip sizes, often expressed in SAE (fractional inches) or metric (millimeters), alongside the compatible nut or bolt head sizes. For example, a 1/4-inch nut driver would be suitable for fasteners with a 1/4-inch head.
Utilizing such a reference ensures correct tool engagement, preventing damage to both the fastener and the driver. Proper fit minimizes slippage and reduces the force required, increasing efficiency and safety. Historically, standardization of these sizes has simplified manufacturing and repair processes across industries, from automotive to electronics. Without a standardized system, the potential for errors and the proliferation of incompatible tools would significantly impede work.
