small bolts and screw questions
#1
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small bolts and screw questions
which bolts and what material (metal) are the best suited for maintaining shape and not stripping over time?
should certain bolts be greased?
im noticing more cheap bikes with stripped and shredded bolts which make them impossible to work on. if you had the choice to replace every bolt on a bike, what type of tool goes best with avoiding a stripped scenario.
should certain bolts be greased?
im noticing more cheap bikes with stripped and shredded bolts which make them impossible to work on. if you had the choice to replace every bolt on a bike, what type of tool goes best with avoiding a stripped scenario.
#2
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Stainless on stainless tends to gall.
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Galvanized (zinc plated) hardware is the cheapest and shortest lasting.
Cadmium plated, which has sort of a bright yellow finish, is next up.
Stainless, the most expensive stuff, tends to be hardest and is usually pretty tough too. But not all stainless steels are the same.
Anytime you see a bright, shiny silver finish on a cheap bike, it’s probably chrome plating over mild steel, and it will fail easily.
If you find hardware classified “Grade 8” it will be tougher than lesser or ungraded stuff. It might also be made to tighter tolerances, but I’m not sure about that.
I put a light coat of grease on almost everything when assembling bike parts. Then, I try to keep stuff clean the best I can. I seldom* have problems with stripped or broken hardware.
* I didn’t say never. A few months ago I broke a fender attachment bolt on my wife’s bike. It was a bugger to resolve, too.
Cadmium plated, which has sort of a bright yellow finish, is next up.
Stainless, the most expensive stuff, tends to be hardest and is usually pretty tough too. But not all stainless steels are the same.
Anytime you see a bright, shiny silver finish on a cheap bike, it’s probably chrome plating over mild steel, and it will fail easily.
If you find hardware classified “Grade 8” it will be tougher than lesser or ungraded stuff. It might also be made to tighter tolerances, but I’m not sure about that.
I put a light coat of grease on almost everything when assembling bike parts. Then, I try to keep stuff clean the best I can. I seldom* have problems with stripped or broken hardware.
* I didn’t say never. A few months ago I broke a fender attachment bolt on my wife’s bike. It was a bugger to resolve, too.
Last edited by Broctoon; 07-01-21 at 03:57 PM.
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Forgot to add...
Common bolt head styles, from most to least likely to strip, are as follows:
Slotted or Phillips
External hex (standard automotive style)
Internal hex or “Allen” head
Internal star or Torx
An old trick that works well for removing a really tight fastener with a head that wants to strip: smear on a little dab of valve grinding compound. Don’t have access to this stuff? A coarse polishing compound might also do the trick. It’s counterintuitive, but a gritty substance between the tool and fastener somehow increases traction.
Common bolt head styles, from most to least likely to strip, are as follows:
Slotted or Phillips
External hex (standard automotive style)
Internal hex or “Allen” head
Internal star or Torx
An old trick that works well for removing a really tight fastener with a head that wants to strip: smear on a little dab of valve grinding compound. Don’t have access to this stuff? A coarse polishing compound might also do the trick. It’s counterintuitive, but a gritty substance between the tool and fastener somehow increases traction.
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Proper use of the correct tool and not using ball end tools on overly tight fasteners will fix 95% of stripped fastener issues.
I deal with a lot of bikes on poor condition at a local co-op. Stripping the drive feature in fasteners is very rare for me.
Don’t use an open end when you can use a closed end or socket. Don’t use an adjustable (crescent) wrench for anything that involves more than moderate torque for the fastener size. Keep your tools fully and squarely seated.
A little lubrication goes a long way.
I deal with a lot of bikes on poor condition at a local co-op. Stripping the drive feature in fasteners is very rare for me.
Don’t use an open end when you can use a closed end or socket. Don’t use an adjustable (crescent) wrench for anything that involves more than moderate torque for the fastener size. Keep your tools fully and squarely seated.
A little lubrication goes a long way.
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#6
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at what poimt do yall change your tools out? i feel the tools i have been using at the bike shop work at is starting to wear. at what point should you replace your tool.
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Galvanized (zinc plated) hardware is the cheapest and shortest lasting.
Cadmium plated, which has sort of a bright yellow finish, is next up.
Stainless, the most expensive stuff, tends to be hardest and is usually pretty tough too. But not all stainless steels are the same.
Anytime you see a bright, shiny silver finish on a cheap bike, it’s probably chrome plating over mild steel, and it will fail easily.
If you find hardware classified “Grade 8” it will be tougher than lesser or ungraded stuff. It might also be made to tighter tolerances, but I’m not sure about that.
Cadmium plated, which has sort of a bright yellow finish, is next up.
Stainless, the most expensive stuff, tends to be hardest and is usually pretty tough too. But not all stainless steels are the same.
Anytime you see a bright, shiny silver finish on a cheap bike, it’s probably chrome plating over mild steel, and it will fail easily.
If you find hardware classified “Grade 8” it will be tougher than lesser or ungraded stuff. It might also be made to tighter tolerances, but I’m not sure about that.
Grade 8 or the metric equivalent 10.9 really have no need on nearly any bicycle fastener.
nearly all SS fasteners a consumer is going to buy off a local shelf will be 18-8 302 or 304SS
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I don't want the fastener to be a lot harder than a threaded hole in the frame or one of the bike components. I can replace the fastener; fixing a stripped threaded hole is more work.
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I would replace a tool when it starts to round out a head easily and is misshapen or deformed in some way. For hex keys that could be something that happens often especially if you buy the cheap stuff, high quality tools will last a while but your most used tools tend to wear out more quickly.
In terms of any metal on metal, you want grease, anti-seize or some sort of mild thread locking compound depending on manufacturer recommendations. Generally if nothing else a light coat of grease will help. I prefer using stainless bolts for most things but am not opposed to fully forged titanium bolts as needed (though they will cost a fortune) I also would much rather have a hex head or Torx head as opposed to a cross head or slot drive. However I do come across a cross head screw on a bike I will almost always want to use a JIS screwdriver as it tends to not cam out and at least for Shimano is the correct tool anyway as they are JIS screws.
In terms of any metal on metal, you want grease, anti-seize or some sort of mild thread locking compound depending on manufacturer recommendations. Generally if nothing else a light coat of grease will help. I prefer using stainless bolts for most things but am not opposed to fully forged titanium bolts as needed (though they will cost a fortune) I also would much rather have a hex head or Torx head as opposed to a cross head or slot drive. However I do come across a cross head screw on a bike I will almost always want to use a JIS screwdriver as it tends to not cam out and at least for Shimano is the correct tool anyway as they are JIS screws.
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at the point they start slipping. having said that, cheap tools can slip even if not worn out in the proper sense. they're often made with cheap steel and flex under pressure giving one the idea it is worn out. and, of course, since they do flex they can slip and wear out quickly. good tools...like craftsman, blue point, snap on, some kobalt, etc should last a really long time if they haven't been negligently used. i've had a craftsman set of wrenches and sockets for for almost 30 years now. they only things that wore out from that set were the socket drivers....because i was negligent and let them get wet one too many times.... working in the rain or mindlessly leaving them out and then it rains unexpectedly. they'd have been fine if i'd actually took care of them after getting wet
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I have had to replace old Front and Rear derailuer adjustment Screw/Bolts. Either they were stripped out, bent or just buggered up. Most were mild chromed steel with Prince Point or Phillips heads. I replaced them with Stainless Steel Allen Heads.
Even though I have had no problems with them, it is a Stainless to Alloy (aluminium) junction. That is not necessarily a good thing.
Even though I have had no problems with them, it is a Stainless to Alloy (aluminium) junction. That is not necessarily a good thing.
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Last edited by zandoval; 07-01-21 at 08:50 PM.
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Proper use of the correct tool and not using ball end tools on overly tight fasteners will fix 95% of stripped fastener issues.
I deal with a lot of bikes on poor condition at a local co-op. Stripping the drive feature in fasteners is very rare for me.
Don’t use an open end when you can use a closed end or socket. Don’t use an adjustable (crescent) wrench for anything that involves more than moderate torque for the fastener size. Keep your tools fully and squarely seated.
A little lubrication goes a long way.
I deal with a lot of bikes on poor condition at a local co-op. Stripping the drive feature in fasteners is very rare for me.
Don’t use an open end when you can use a closed end or socket. Don’t use an adjustable (crescent) wrench for anything that involves more than moderate torque for the fastener size. Keep your tools fully and squarely seated.
A little lubrication goes a long way.
Another common way to strip a fastener is to use a Phillips driver on a JIS screw; JIS are identifiable by the little dimple next to the drive recess. This happens to derailleur limit screws a lot.
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2. As soon as I feel a tool, typically an allen wrench, starts to slip I'll take a look. If the end is rounded off it gets thrown out. Not that I've needed to replace one recently, but a half decent 5 mm allen wrench costs $0.41 from McMaster Carr, and I order other things from them often enough that shipping cost isn't relevant. A nicer allen wrench is a bit more, but not much and shy of abuse they are really hard to wear out. I used to grind the tips off of allen wrenches to square them back up until I realized it always seemed to be the same allen wrenches that needed to be re-ground. Either they have already had their heat treatment ruined, or they weren't all that great to begin with.
I don't feel bad throwing out dried out dry erase or permanent markers, dead paint pens, normal pens that don't flow nicely, sticks of chalk too small to hold on to, or pencils sharpened to the eraser either.
With this, if the fastener is starting to deform, don't put it back in! Replace it before you can't get it out.
at the point they start slipping. having said that, cheap tools can slip even if not worn out in the proper sense. they're often made with cheap steel and flex under pressure giving one the idea it is worn out. and, of course, since they do flex they can slip and wear out quickly. good tools...like craftsman, blue point, snap on, some kobalt, etc should last a really long time if they haven't been negligently used. i've had a craftsman set of wrenches and sockets for for almost 30 years now. they only things that wore out from that set were the socket drivers....because i was negligent and let them get wet one too many times.... working in the rain or mindlessly leaving them out and then it rains unexpectedly. they'd have been fine if i'd actually took care of them after getting wet
Hex drive tools (any drivers, actually) should be considered consumables which will need to be replaced when they become worn; a worn tool is more likely to strip out a drive recess. Hex drivers can be ground back (carefully, to avoid drawing their temper) to fresh, sharp edges to get more life out of them.
Another common way to strip a fastener is to use a Phillips driver on a JIS screw; JIS are identifiable by the little dimple next to the drive recess. This happens to derailleur limit screws a lot.
Another common way to strip a fastener is to use a Phillips driver on a JIS screw; JIS are identifiable by the little dimple next to the drive recess. This happens to derailleur limit screws a lot.
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I'm pretty much in agreement, except I would remove Craftsman from the list, at least as far as screwdrivers are concerned. It pains me to do so because I have a reasonably complete set of Craftsman hand tools, but they just aren't the same as they used to be. Mine are mainly from ~2008, and they are notably inferior to my father's Craftsman tools from the 70's and 80's. They have successfully decreased their warranty costs with me, but only because I no longer bother to even return their tools for replacement when I break them. They're still perfectly serviceable for general consumer use, but I wouldn't pay any premium for them over any other big box hardware store brand.
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that is a shame to hear. i haven't bought any craftsman tools in a long time. then, i see lowe's carries them a few weeks ago. i wonder if their tools (other than screwdrivers) are worth the price? i didn't bother to ask if they had the old school lifetime warranty craftsman used to have. i couldn't afford the sockets...lol. well, not the set, anyway. i did get a single 12pt 10mm with 1/2 drive. i'll likely only ever use the thing once for a number of years. needed it for the drive shaft on my honda
I don’t make enough money on my tools or spend enough time holding them over my head to justify the expense on Snap-On even if they are better tools, although next time my ratchets break I’ll probably go that route just for the finer pitch.
I’ve been going Wiha/Wera for allens and modular screwdrivers lately (at work), although I’m not a fan of their small sockets (for not entirely rational reasons). I’ve never looked to see if they have a warranty as the time to send something back isn’t cost effective, but they don’t break often outside of high volume automation, so it doesn’t really matter.
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Hex drive tools (any drivers, actually) should be considered consumables which will need to be replaced when they become worn; a worn tool is more likely to strip out a drive recess. Hex drivers can be ground back (carefully, to avoid drawing their temper) to fresh, sharp edges to get more life out of them.
I also keep my collection of other accumulated and worn tools in another barn for use by the kind of people who like to wave hammers at things

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The later advice above is good but I did not see one area mentioned that can be problematic, that being Japanese engineers developed their own cross-point design similar to that of the Phillips but not the same. Unlike Henry Phillips' design they are not made to cam out at higher torques, over tightening is controlled by you. Phillips screwdrivers don't properly engage JIS screws (Japanese Industrial Standard). It can be very difficult to tell the difference in these screw heads, some JIS screws have a single dot or dimple on the head of the screw, most don't. You need a JIS driver for a Shimano component in higher torque situations or you can get cam-outs and/or screw damage.
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which bolts and what material (metal) are the best suited for maintaining shape and not stripping over time?
should certain bolts be greased?
im noticing more cheap bikes with stripped and shredded bolts which make them impossible to work on. if you had the choice to replace every bolt on a bike, what type of tool goes best with avoiding a stripped scenario.
should certain bolts be greased?
im noticing more cheap bikes with stripped and shredded bolts which make them impossible to work on. if you had the choice to replace every bolt on a bike, what type of tool goes best with avoiding a stripped scenario.
I buy “mission-critical” (eg holding my car together) fasteners from a specialist supplier like McMaster, but you generally have to buy in bulk, whereas a Big Box or Ace will sell smaller quantities. stainless fasteners - even Big Box stainless, will be better than the plated crap found in most cheap bikes. Grade 8 or even Grade 5 fasteners are massive overkill for bicycle applications. I think the only place I went McMaster for the bike was replacing the Ti screws on a Cinelli stem with some good quality steel equivalents. Small screws, IMO, aren’t the best application for Ti, especially on a 2-screw bar clamp where one screw failure is enough to cause the bars to come completely adrift.
Last edited by Litespud; 07-02-21 at 07:14 AM.
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that is a shame to hear. i haven't bought any craftsman tools in a long time. then, i see lowe's carries them a few weeks ago. i wonder if their tools (other than screwdrivers) are worth the price? i didn't bother to ask if they had the old school lifetime warranty craftsman used to have. i couldn't afford the sockets...lol. well, not the set, anyway. i did get a single 12pt 10mm with 1/2 drive. i'll likely only ever use the thing once for a number of years. needed it for the drive shaft on my honda
I know good tools. I was a professional auto tech for many years, and most of the tools in my tool chest are from $nap-On.

#22
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Standard US phillips screwdrivers can be made to fit JIS screws by grinding off the tip until it fits the screw head with no play. It's not perfect, but it will really help prevent rounding off 95% of screw heads.
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Stanley Tools bought the craftsman name just a few years ago. Have to wonder if the quality will pick up now that there is an actual tool manufacture making the product.
Bought a Craftsman saw blade the other day for my Sears radial arm saw. Talk about vintage. Felt really weird to be using a Craftsman labeled blade again.
Bought a Craftsman saw blade the other day for my Sears radial arm saw. Talk about vintage. Felt really weird to be using a Craftsman labeled blade again.
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https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Also, using blue thread locker and torque at the low end of specified range make sense. Check fasteners that have been replaced after using to make sure they arent loosening; and increase torque if they are. The only fastener I've stripped on a bike is a chainring fastener that is now held fast by thread locker. That wouldn't work for most fasteners, but has held for years on a double chainring setup.