5 mm Metric Hex Key covers one precise width in the metric side of the socket-tool drawer. The ISO 2936 width band is 5.00 / 4.95 mm, sized just under nominal so the key can enter an in-tolerance socket and bear on the flats.
Production equipment maintained in the United States often still follows metric socket-drive callouts. This family supports the metric side of the catalog, including socket-drive cap screws, flat heads, buttons, shoulders, and set screws.
Review the 5 mm size and ISO 2936 max/min width data against the print before ordering. Keeping the driver as a loose single size helps replace the exact tool without buying a full set. The technical highlights below keep the verified width data separate from general application notes.
Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
