3 mm Metric Hex Key gives assembly teams a dedicated 3 mm L-key instead of another mixed-size kit on the bench. The ISO 2936 width band is 3.00 / 2.96 mm, sized just under nominal so the key can enter an in-tolerance socket and bear on the flats.
Imported equipment service often depends on metric tools at the machine rather than inch substitutes from a nearby bench. This family supports the metric side of the catalog, including socket-drive cap screws, flat heads, buttons, shoulders, and set screws.
Review the 3 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.
