We precisely manufacture our hex key geometry on the large end of the applicable range, resulting in less slop in fasteners.
ââ¬Â¢Tight Fit with Fasteners ââ¬â In order to create a reliable, tight fit with fasteners, our L-keys are slightly larger in size with narrower tolerances than most competitors that follow the ASME standardsââ¬Â¢Two Measures of Tolerance Control ââ¬â We measure our hex key tolerances from point-to-point and side-to-side to ensure the highest standards of dimensional accuracy and consistencyââ¬Â¢8660 Steel ââ¬â We make our L-keys with 8660 nickel chromium molybdenum steel that's heat-treated to 54ââ¬â58 HRC to produce tools that are hard, but not brittleââ¬Â¢Corrosion-Resistant Finish ââ¬â We coat all of our keys with a durable manganese phosphate finish that's resistant to corrosionââ¬Â¢Clear Markings ââ¬â With the exception of the smallest sizes, Tekton L-key sizes are marked in two ways: with a high-visibility laser marking and a stamped marking (sizes 0., 5/64 in.050 in.With the exception of the smallest sizes, Tekton L-key sizes are marked in two waysboth with a high-visibility laser marking and a stamped marking.
