The Nippon Shaft Nippon Zelos 6 .370 Regular sits at the very light end of steel iron shafts at 2.42 oz (68.5 g), while its 3° torque is on the higher side. Its high launch / mid-high spin flight profile and stable / control-oriented character make it friendly to smooth or moderate tempos.
Iron shaft specifications
Nippon Shaft · Nippon Zelos 6 .370 Regular · Iron Shaft
Material: SteelFlex: RegularWeight class: Lightweight (60-79.9 g)Flight: High launch / Mid-high spinTip: Parallel tip
2.42 ozWeight
3°Torque
RegularFlex
HighLaunch
Material-matched benchmarks
How this shaft compares
Numeric comparisons use steel iron shafts in this database.
Weight
Very low
2.42 oz
Weight is very low among steel iron shafts in this database.
Torque
Very high
3°
Torque is very high among steel iron shafts with published numeric torque.
Balance point
Very low
51.5%
Balance point is very low among comparable steel iron shafts.
At a glance
Shaft profile
MaterialSteel
TipParallel tip
LaunchHigh
SpinMid-High
StabilityStable / control-oriented
Tempo fitFriendly to smooth or moderate tempos
Overview
Model information
| Manufacturer | Nippon Shaft |
|---|---|
| Model | Nippon Zelos 6 .370 Regular |
| Category | Iron Shaft |
| Catalog year | 2026 |
| SKU / code | NP0025 |
| MPF rating | 3B3M |
Full specifications
Technical details
Weight & flex
Weight2.42 oz (68.5 g)
Weight classLightweight (60-79.9 g)
FlexRegular
Torque3°
Bend pointlow
Kick pointLow / tip
Tip stiffnesssoft
Tip flexsoft
Butt flexmedium
Balance point51.5%
Build & dimensions
MaterialSteel
Tip typeParallel tip
Tip diameter0.37 in (9.4 mm)
Butt diameter0.6 in (15.2 mm)
Shaft lengthVaries by club
Length range41.0-37.0 (derived discrete set) in (104.1-94 (derived discrete set) cm)
Parallel tip lengthN/A — taper-tip design
Club rangeIrons, typically 3i-PW (trimmed from parallel blank)
FinishChrome / polished steel (family-based)
Flight & feel
LaunchHigh
SpinMid-High
Trajectory / spin profileHigh launch / Mid-high spin
Stability profileStable / control-oriented
Launch assistanceStrong launch assistance
Feel profileCrisp steel feedback, stable through impact, light in the hands
Relative weight positionVery low for steel iron shafts
Relative torque positionVery high for steel iron shafts
Player fit
Tempo fitFriendly to smooth or moderate tempos
Transition fitBest with smooth-to-moderate transitions
Control vs speed biasSpeed / ease-of-swing biased
Long-iron playabilityVery friendly in long irons; lighter weight and/or launch help
Short-iron controlBalanced short-iron feel and control
Likely swing-speed fitModerate iron swings
Target playerSlower-to-moderate swing speeds seeking easier launch and lighter overall feel
Golfer fit summarySpeed / ease-of-swing biased; friendly to smooth or moderate tempos; high launch / mid-high spin.