The Aerotech SteelFiber 110 .370 X-Stiff sits at the heavy end of graphite iron shafts at 3.88 oz (110 g), while its 1.9° torque is on the lower side. Its mid launch / mid-low spin flight profile and very stable / low-twist character make it best suited to medium-fast or fast tempos.
Iron shaft specifications
Aerotech · SteelFiber 110 .370 X-Stiff · Iron Shaft
Material: GraphiteFlex: X-StiffWeight class: Midweight (100-119.9 g)Flight: Mid launch / Mid-low spinTip: Parallel tip
3.88 ozWeight
1.9°Torque
X-StiffFlex
Low-MidLaunch
Material-matched benchmarks
How this shaft compares
Numeric comparisons use graphite iron shafts in this database.
Weight
Very high
3.88 oz
Weight is very high among graphite iron shafts in this database.
Torque
Very low
1.9°
Torque is very low among graphite iron shafts with published numeric torque.
Balance point
Very low
50.5%
Balance point is very low among comparable graphite iron shafts.
At a glance
Shaft profile
MaterialGraphite
TipParallel tip
LaunchLow-Mid
SpinMid-Low
StabilityVery stable / low-twist
Tempo fitBest suited to medium-fast or fast tempos
Overview
Model information
| Manufacturer | Aerotech |
|---|---|
| Model | SteelFiber 110 .370 X-Stiff |
| Category | Iron Shaft |
| Catalog year | 2026 |
| SKU / code | AT0016 |
| MPF rating | 5B1H |
Full specifications
Technical details
Weight & flex
Weight3.88 oz (110 g)
Weight classMidweight (100-119.9 g)
FlexX-Stiff
Torque1.9°
Bend pointmid/high
Kick pointHigh
Tip stiffnessmed/firm
Tip flexfirm
Butt flexfirm
Balance point50.5%
Build & dimensions
MaterialGraphite
Tip typeParallel tip
Tip diameter0.37 in (9.4 mm)
Butt diameter0.6 in (15.2 mm)
Shaft length41 in (104.1 cm)
Length rangeSingle-length blank; tip-trim by club
Parallel tip length5.5 in (14 cm)
Club rangeIrons, typically 3i-PW (trimmed from parallel blank)
FinishPainted composite / graphite finish (varies by model) (family-based)
Flight & feel
LaunchLow-Mid
SpinMid-Low
Trajectory / spin profileMid launch / Mid-low spin
Stability profileVery stable / low-twist
Launch assistanceNeutral launch assistance
Feel profileVibration-damping graphite feel, very firm/stable through impact
Relative weight positionVery high for graphite iron shafts
Relative torque positionVery low for graphite iron shafts
Player fit
Tempo fitBest suited to medium-fast or fast tempos
Transition fitHandles aggressive transitions well
Control vs speed biasControl / consistency biased
Long-iron playabilityNeutral long-iron playability
Short-iron controlStrong short-iron and wedge control bias
Likely swing-speed fitFaster iron swings / stronger players
Target playerPlayers seeking flatter trajectory, tighter dispersion and a firmer tip feel
Golfer fit summaryControl / consistency biased; best suited to medium-fast or fast tempos; mid launch / mid-low spin.