What the Numbers on a Shaft Actually Mean
Flex letters, weight in grams, torque in degrees — none of it tells the whole story by itself. Here's how we read a shaft spec once it's in front of us on the bay.
A Relative Label, Not a Fixed Standard
Flex ratings aren't standardized across manufacturers — a "Stiff" shaft from one brand can play noticeably different from a "Stiff" shaft from another. Flex describes how much a shaft bends and releases through the downswing relative to your own speed and tempo, not a fixed physical unit.
Too flexible for your swing and face angle gets inconsistent at impact with excess spin; too stiff, and you can lose feel and struggle to load the shaft at all.
Steel, Graphite & Multi-Material
Steel
Heavier and more consistent shaft to shaft, giving precise feedback. The standard for iron and wedge shafts among players who prioritize feel.
Graphite
Lighter weight raises swing speed for players who benefit from it and dampens vibration for comfort. Standard in drivers and fairway woods, increasingly common in irons for slower-speed players.
Multi-Material
A steel tip section paired with a graphite body, blending feel and consistency with reduced weight and vibration — a growing category in iron shafts.
The Numbers Behind the Flex Label
Torque measures how much a shaft twists under load — lower torque generally feels more stable for faster, aggressive swings, while higher torque adds feel and a softer release for smoother tempos.
Shaft weight interacts with flex more than most golfers expect: a lighter shaft in the same flex rating plays softer and generates more clubhead speed, while a heavier shaft in the same flex plays firmer with more control. Humid River Valley summers also swell grip rubber slightly over a season, which is worth checking alongside shaft choice rather than treating the two separately.
Find Your Shaft Match
We test flex, weight, and material combinations against your own data during every fitting session.