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Flank drive wrenches #5331367 01/24/20 08:39 PM
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spasm3 Offline OP
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I'm debating buying a set of metric snapon flank drive wrenches. I have lots of older craftsman wrenches, but the newer flank drive plus looks like its great for damaged fasteners.

OR get a set of these for those situations where the bolt is rounded.

https://www.amazon.com/Astro-Pneuma...I41A/ref=cm_cr_arp_d_product_top?ie=UTF8

My question is, will the snap on flank drive plus bite, mark, and damage the head of a bolt if its not rounded off ?


13 elantra 81k 5w30 synpwr
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Re: Flank drive wrenches [Re: spasm3] #5331369 01/24/20 08:42 PM
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JC1 Offline
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How often do you have a rounded off fastener that you need to remove?


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Re: Flank drive wrenches [Re: spasm3] #5331374 01/24/20 08:52 PM
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Propflux01 Offline
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Exactly. Go the Amazon route. Looks like a good product.


2014 Hyundai Elantra
2014 Hyundai Elantra GT
Re: Flank drive wrenches [Re: JC1] #5331380 01/24/20 08:58 PM
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spasm3 Offline OP
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Originally Posted by JC1
How often do you have a rounded off fastener that you need to remove?


Not so much how often, but it's when and where.
I got these off without rounding them, using atf/acetone and heat.

But a better wrench may have been a good first choice.

IMG_20190930_085645930.jpgIMG_20190930_085705349.jpg

13 elantra 81k 5w30 synpwr
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Re: Flank drive wrenches [Re: spasm3] #5331390 01/24/20 09:13 PM
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Langanobob Offline
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Originally Posted by spasm3


My question is, will the snap on flank drive plus bite, mark, and damage the head of a bolt if its not rounded off ?


No. Flank drive contacts the fastener where it has slightly more meat and is less likely to damage the bolt head or nut.

Re: Flank drive wrenches [Re: spasm3] #5331397 01/24/20 09:19 PM
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clinebarger Offline
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A good set of regular Flank Drive SO wrenches will be a step up from the Craftsman ones you have!
I have a set of metric SO Flank Drive Plus wrenches I bought in 1999 (10-19mm)......I wouldn't buy them again for what I paid 20 years ago, Much less for what they cost now!

Are they good wrenches....Yes! But I can't say they're much better than the Flank Drive SAE (3/8"-1 1/4") set that are a little older.

Spreading of the open end on combination wrenches is a reality we must accept when high torque/force is applied!

USA made Blue Point & Williams wrenches are identical to the SO Flank Drive in every way besides the finish & chroming process.


2001 Chevy Camaro L92/4L80E
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Re: Flank drive wrenches [Re: spasm3] #5331402 01/24/20 09:30 PM
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Chris142 Offline
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The snap on ones work well. But not for everyday use. They grab and make it hard to use them like a normal wrench.


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Re: Flank drive wrenches [Re: spasm3] #5331521 01/25/20 02:42 AM
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GMBoy Offline
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For rounded fasteners I have found the Craftsman Universals work good....the are splined and bite good. As for the flank drive style wrenches skip the pricey Snap -on and get the new very high quality ICON brand at Harbor Freight. It is their new line up, professional tools to compete with the big names.

Re: Flank drive wrenches [Re: spasm3] #5331574 01/25/20 06:41 AM
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Audios Offline
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The only thing Ive really seen a difference in with Snap On is the precision of the sizing. A 19mm is 19mm, not 19.1, not 19.15 etc. There is no play with the wrench on the head of the bolt, reducing the chance youll strip it.


2002 VW Golf TDI-T5 10/30
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2005 BMW M3 BMW-Twin Power 10/60
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1998 BMW M3/4/5-M1 10/40
Re: Flank drive wrenches [Re: spasm3] #5331597 01/25/20 07:26 AM
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dlundblad Offline
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There’s also flank drive sockets if you have the room.

My Jeep and truck has the room, but her Volvo does not unless you remove the whole knuckle.


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02 Volvo S60 2.4T 195k M1 0w40 Mahle OX149D
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Re: Flank drive wrenches [Re: spasm3] #5331614 01/25/20 07:46 AM
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NYEngineer Offline
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I've had flank drive wrenches since Snap On introduced them. Nothing but good things to say about them.

Re: Flank drive wrenches [Re: GMBoy] #5331720 01/25/20 09:58 AM
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willbur Offline
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Originally Posted by GMBoy
For rounded fasteners I have found the Craftsman Universals work good....the are splined and bite good. As for the flank drive style wrenches skip the pricey Snap -on and get the new very high quality ICON brand at Harbor Freight. It is their new line up, professional tools to compete with the big names.

Originally Posted by GMBoy
For rounded fasteners I have found the Craftsman Universals work good....the are splined and bite good. As for the flank drive style wrenches skip the pricey Snap -on and get the new very high quality ICON brand at Harbor Freight. It is their new line up, professional tools to compete with the big names.


There was a YouTube video where a guy torture tested both the SO flank drive wrench and the Icon equivalent. The SO did the job without obvious damage to it but the Icon was damaged. He said the Icon was more suited to diy and was a great deal for that. I think he said he was a former SO salesman. Conclude as you see fit.

Re: Flank drive wrenches [Re: spasm3] #5331724 01/25/20 10:05 AM
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Snap on wrenches are the strongest, most durable I have used. Their sizes are also a proper fit on the proper fastener. A majority of what I own are snap on. I’ve never broken or damaged one even with “double” wrenches on stubborn fasteners. I also used them daily.

Yes they are expensive, but you get what you pay for in this case.

Last edited by mattd; 01/25/20 10:05 AM.

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Re: Flank drive wrenches [Re: spasm3] #5332406 01/26/20 03:46 AM
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ajchien Offline
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Originally Posted by spasm3
I'm debating buying a set of metric snapon flank drive wrenches. I have lots of older craftsman wrenches, but the newer flank drive plus looks like its great for damaged fasteners.

OR get a set of these for those situations where the bolt is rounded.

https://www.amazon.com/Astro-Pneuma...I41A/ref=cm_cr_arp_d_product_top?ie=UTF8

My question is, will the snap on flank drive plus bite, mark, and damage the head of a bolt if its not rounded off ?


I would refer you to this link where folks discuss the difference between flank drive and flank drive plus :

https://www.garagejournal.com/forum/showthread.php?t=71802


2003 Honda CRV EX 290,000+ miles
2003 Honda Element EX 330,000+ miles
2018 Ford Transit XLT 27,000+ miles
Re: Flank drive wrenches [Re: ajchien] #5332436 01/26/20 05:59 AM
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spasm3 Offline OP
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Originally Posted by ajchien


I would refer you to this link where folks discuss the difference between flank drive and flank drive plus :

https://www.garagejournal.com/forum/showthread.php?t=71802




Thanks! That was very informative. It answered my concern. It seems the flank drive plus really works but as chris142 said may not work well for everyday wrenching, as it does bite and Mar fasteners.


13 elantra 81k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 17000 miles synpwr 5w30
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