The shaft tip size is not a performance choice — it’s a compatibility number. Your clubhead’s hosel decides which tip you need: .335 or .350 for wood heads, .355 taper or .370 parallel for irons, and the difference between them is so small that most golfers couldn’t tell two otherwise-identical shafts apart in a blind test.
Here’s the thing almost nobody explains: those four numbers matter for one reason only — so you buy the shaft that fits. A .350 tip physically will not go into a .335 hosel, and sanding it down to force it is the fastest way to snap a shaft at the tip. But you can go the other way: a .335 shaft drops into a .350 hosel with a brass shim, and it plays the same as if it were the “right” size.
This guide walks you through what each number means, why drivers come in two sizes, how taper and parallel iron shafts differ, and — for anyone with a modern driver — how the adjustable hosel adapter changed the whole game by making the tip size almost irrelevant to you.
The Four Tip Sizes, and Which Clubhead Takes Each
Wood shafts (driver, fairway wood, hybrid) come in .335″ and .350″ tips, while iron shafts come in .355″ taper and .370″ parallel — and the number is the diameter of the shaft tip in inches, measured at the very end that inserts into the head.
Standard for premium aftermarket shafts and most tour setups. Slightly thinner wall, more tip flex, huge aftermarket selection.
Common in retail stock clubs. Thicker wall for durability and lower warranty claims. Many mass-market drivers shipped with .350 tips.
The tip tapers from .370″ up the shaft down to .355″ at the very end. Standard for most name-brand forged and pro-line irons.
A constant .370″ diameter for an extended distance up the tip. Common in game-improvement irons, component heads, and many hybrids.
Your hosel bore diameter decides the tip — never the other way around. The shaft tip has to match the hosel you’re putting it into. When you buy new clubheads, the head dictates the shaft, not the shaft the head. And because a previous owner may have re-bored a hosel, the safest move before ordering is to measure (or look up the spec), not assume.
How do you know which you have? Two ways. A hosel-and-shaft gauge set is the accurate route — you slide gauge posts into the hosel until one fits snug. Without a gauge, measure the inside of the hosel opening with a caliper, or look up the club model’s spec sheet online. For steel iron shafts, a “U” in the shaft code usually means a .370 parallel tip; no “U” usually means .355 taper.
Skip the guesswork if you’re buying a complete, ready-to-play club rather than building one. Then the factory already matched everything, and the tip size is a spec you’ll never touch. This guide exists for the day you buy a shaft separately — off the rack, pulled from another club, or as a build — and need to know it’ll fit.
Why Wood Shafts Come in Two Sizes: .335 vs .350
The .350 tip exists mostly for manufacturing cost and durability, not performance — thicker tip walls survive off-center hits and cut down warranty claims — while the .335 tip became the standard for premium aftermarket shafts and tour players who feel a more active, responsive tip.
Let’s get the honest part out first: the physical difference between .335 and .350 is 15 thousandths of an inch — about half the thickness of a fingernail. Shaft engineers have said publicly that with otherwise identical flex, weight, and torque specs, they can build a .350 shaft that plays exactly like its .335 twin, and that most perceived feel differences are in the player’s head.
So why do two sizes exist at all? Retail history. Mass-market drivers shipped with .350 tips because the thicker wall took abuse better and cut down breakage claims. Tour and aftermarket shafts stayed .335, partly tradition, partly because the thinner wall is more active at the tip — some players describe .335 as “loading” and releasing more energetically. A few golfers report .350 versions of the same model feel firmer or more tip-stiff; many more report noticing nothing at all.
Here’s the practical bottom line: performance-wise, it’s a non-issue for almost everyone. Shaft flex, weight, torque, and bend profile change how a club plays far more than that 15-thousandths-of-an-inch tip. If you’re choosing between a .335 and a .350 shaft with identical specs for a head that takes both, buy whichever is cheaper or easier to find. The tip size will not be why you hit it well or badly.
Iron Shafts: Taper (.355) vs Parallel (.370)
For irons the real difference isn’t the number — it’s that taper-tip shafts are made one-per-club at constant weight, while parallel-tip shafts are single blanks cut and tip-trimmed to build a whole set, which is why you match the shaft to the head’s hosel bore rather than choosing on feel.
| .355 taper tip | .370 parallel tip | |
|---|---|---|
| Shape | Tapers from .370″ up the shaft to .355″ at the tip | Constant .370″ diameter up an extended tip section |
| Who uses it | Most name-brand forged and pro-line irons & wedges | Game-improvement irons, component heads, many hybrids |
| Set building | Discrete lengths, one shaft per iron, constant weight | Single blank, tip-trimmed per club, weight descends |
| Flex | Built in; clubmaker butt-trims and glues | Adjusted by how much you tip-trim |
| Stepping | Supports hard/soft stepping | Long-iron pulls re-use more easily |
Why taper shafts feel different to some players isn’t the tip — it’s the constant weight. A .355 taper 3-iron shaft weighs the same as the 9-iron shaft, which is why better players who grew up on that feel describe taper tips as “firmer.” A .370 parallel set is heavier in the long irons and lighter in the short irons, which some describe as a slightly softer, higher-launching feel. Blind tests consistently find most players can’t tell the difference between .355 and .370 versions of the same model.
Both measure .370″ at the top of the hosel — the taper only happens over roughly the last inch inside the bore. So the tip size has essentially zero effect on stiffness. The practical rule: match the shaft to the head. If your heads are standard .355 taper, you need taper-tip shafts; if they’re component or .370-bore heads, you need parallel-tip shafts.
Can You Mix Sizes? Shims, Sanding, and What’s Safe
You can safely shim a smaller shaft into a larger hosel — a .335 into a .350, or a .355 taper into a .370 — with a brass shim that fills the gap and changes almost nothing about how the club plays; you should never sand down a larger tip to force it into a smaller hosel, because that can snap the shaft at the tip.
A purpose-made brass shim fills a ~0.015″ gap (.335→.350, .355→.370). It weighs under a gram, so swingweight barely moves, and the shaft plays as if it were the “right” size.
Sanding a .350 tip to fit a .335 hosel thins the wall where stress concentrates and can snap the shaft at the tip. Graphite is especially fragile here. Don’t.
Shimming is a standard, accepted clubmaking fix — when done right. The collapsible brass fingers wedge between shaft and hosel, and epoxy bonds the whole thing. The catch is technique: universal shims are often too long and bind partway down the bore, which is the exact complaint that fills forum threads — shafts that “get stuck every time” and even a bent 9-iron tip from forcing it. Clubmakers clip the shim’s fingers shorter until the fit is snug but not binding, dry-fit before epoxying, and fully seat the shaft.
The other direction is more trouble. A .355 hosel is a tapered bore cut for a taper-tip shaft. A .370 parallel shaft doesn’t match that taper, and reaming a .355 hosel out to .370 risks thinning the hosel wall too far. Forcing a wood shaft into a hybrid or iron head because it physically fits is also a trap — shaft layup is designed for specific head weights, so shimming fixes fit but not suitability.
When in doubt, the cheapest fix is the right shaft for the head. Shims and reaming are workarounds for when the correct shaft isn’t available. If you’re building a club and both options exist at similar money, buy the shaft that matches your hosel and skip the shim entirely.
The Adjustable Hosel Adapter: Why Tip Size Matters Less Than You Think
If your driver is from the last decade, the tip size is probably already a solved problem for you: an adjustable hosel adapter is epoxied onto the shaft tip, and that shaft-plus-adapter assembly is what inserts into the head — so you’re matching the shaft to an adapter (almost always .335 or .350), and the adapter handles the head side.
What the adapter actually does is adjust loft and lie by rotating a slightly tilted sleeve. Twist it one way and you add loft — the ball launches higher with a bit more spin, and the face closes slightly, which starts the ball more left and can fight a slice. Twist it the other way and you take loft off — lower launch, less spin, the face opens slightly and the ball starts more right, which can fight a hook.
The part most golfers miss: loft and face angle are mechanically linked. You’re not just changing trajectory — you’re changing where the ball starts. That’s why adjustable drivers are genuinely useful for dialing in a draw or fade bias without buying a new club or visiting a fitter. One degree of loft typically changes launch angle by roughly half a degree to a full degree, which at 250 yards can be the difference between the fairway and trouble.
There are two adapter systems, and they differ in flexibility. Single-axis sleeves change loft and lie together — you get more loft and a more closed face at once, and settings are usually labeled by loft number. Dual-cog systems separate loft from lie with an extra collar, so you can fine-tune the two independently. If you’re chasing a specific combination, the independent system is the more precise one.
But here’s the honest limit: an adjustable hosel is not a custom fit. A real fitting covers a dozen specs — length, loft, lie, face angle, shaft flex, weight, bend profile, total weight, swingweight, grip, head design. The hosel only nudges loft and lie within a narrow range. It’s a convenient tuning tool, not a substitute for getting the right shaft in the first place. If the shaft itself is wrong for you, no amount of sleeve-turning fixes it.
Buying a Shaft Off the Rack or From a Pull: What to Check
Before you hand over money for a loose shaft, confirm three things: the tip size matches the head or adapter you’re putting it into, the length is right for the club, and — if it was pulled from another club — it hasn’t been over-tipped or cut short by a previous repair.
- Tip size. Wood shaft? .335 or .350. Iron shaft? .355 taper or .370 parallel. Match it to the hosel or adapter before buying.
- Length and tipping. A pulled shaft may have been tip-trimmed for a heavier head or a different flex — check it still plays the flex you expect in your club.
- Adapter condition. Buying a shaft with an adapter already installed saves you the epoxying, but confirm the adapter matches your head’s brand and generation — they changed over the years.
Pulled shafts are where tip size mistakes actually happen. A shaft pulled from an old bore-through driver, for example, can be moved to a modern head if the tip size is right — but it plays softer and may need tipping. And “this shaft came out of a driver so it’ll fit my driver” is a guess, not a check. Measure or look it up, and you won’t be the person in the forum thread who trimmed four inches off a tip following bad instructions and ended up with a shaft too short for the hosel.
Four Tip-Size Mistakes That Cost You Money
The recurring mistakes are buying a shaft by brand or flex without checking the tip, sanding a larger tip to fit a smaller hosel, trusting that a pulled shaft will play the same as new, and assuming every driver or iron of a given type uses the same tip size.
- Ignoring tip size until install day. The shaft is the most expensive part of a build — checking the tip before you buy is free. A .350 tip does not fit a .335 hosel, full stop.
- Sanding a tip to force a fit. Thinning the tip wall where stress concentrates is how shafts snap. If it doesn’t fit, you have the wrong shaft — not a sanding project.
- Trusting pulled shafts blindly. A pull may be over-tipped, cut short, or built for a different head weight. Confirm length, flex, and condition before you commit.
- Assuming all heads of a type are the same. Some hybrids use .350 if originally steel-shafted and .370 if graphite. A previous owner may have re-bored a hosel. Spec sheets and measurements beat assumptions.
Frequently Asked Questions
Q1: What is a golf shaft tip size?
A: It’s the diameter of the shaft tip in inches — the part that inserts into the clubhead’s hosel. Wood shafts come in .335″ and .350″, and iron shafts come in .355″ taper and .370″ parallel. Your hosel bore decides which tip you need.
Q2: Is a .335 or .350 shaft tip better?
A: For almost every golfer, neither — the difference is 15 thousandths of an inch, and blind tests consistently find players can’t tell otherwise-identical shafts apart. The .335 tip is the aftermarket standard with a more active feel; the .350 tip is thicker-walled for durability and common in stock clubs. Match your head and move on.
Q3: Can I put a .335 shaft in a .350 hosel?
A: Yes — with a brass shim that fills the gap, and it’s a standard clubmaking fix. The shim weighs under a gram and the shaft plays essentially the same. You should not sand a .350 tip down to force it into a .335 hosel, though — that can snap the shaft at the tip.
Q4: What’s the difference between taper tip and parallel tip iron shafts?
A: A .355 taper shaft tapers from .370″ to .355″ over the last inch of the tip and is made one-per-iron at constant weight. A .370 parallel shaft is a single blank that’s tip-trimmed per club, so weight descends through the set. Most players can’t tell them apart by feel; you match the shaft to the head’s hosel bore.
Q5: How do I know what shaft tip size my club takes?
A: Use a hosel-and-shaft gauge set to find the bore size, measure the inside of the hosel with a caliper, or look up the club model’s spec sheet. For steel irons, a “U” in the shaft code usually means .370 parallel; no “U” usually means .355 taper.
Q6: Do modern drivers still use different tip sizes?
A: Yes — most adjustable drivers take a .335 or .350 tip shaft, but you epoxy the shaft into an adapter sleeve and that assembly fits the head. So the tip size you match is the adapter’s, and the head side is handled. If you’re not building a club, you’ll likely never touch this spec.
Q7: What does an adjustable driver hosel actually do?
A: It adjusts loft and lie by rotating a tilted sleeve — more loft closes the face slightly and launches higher, less loft opens it and launches lower. Loft and face angle are mechanically linked, so turning the sleeve also changes where the ball starts. It’s a tuning tool, not a substitute for a proper shaft fit.
Q8: Is it safe to shim a shaft that’s too small for the hosel?
A: Yes, when done properly with a purpose-made brass shim — clip the fingers so they don’t bind, dry-fit first, epoxy, and fully seat the shaft. Shimming a .355 into a .370 or a .335 into a .350 is a standard, accepted fix. Forcing the wrong shaft into a tapered bore without a shim is where clubs get ruined.
Q9: Can you sand down a .370 shaft to fit a .355 hosel?
A: It’s not recommended. Sanding the tip evenly requires a centerless grinder, and thinning graphite risks a tip fracture. Reaming a .355 hosel out to .370 also risks thinning the hosel wall too far. If the sizes don’t match, get the correct shaft.
Explore More Shaft & Driver Guides
Steel vs Graphite Shafts →
Driver Loft & Adjustability Guide →
Driver Fitting Guide →
Shop Golf Clubs at FairwayWise →