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While our editors traverse the country to find the best content for those magazines, we find other oddities related to the old-car hobby that we really had no place for - until now. With this blog, we're giving you a behind-the-scenes look at what we see and what we do during the course of putting out some of the finest automotive magazines you'll ever read.

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I Love This Tool: Ortus Enterprises Check-A-Thread

Posted March 24, 2022 4:00 AM by dstrohl
Pathfinder Tags: motorcycles Tools

Used to be, most of the time I'd walk into the local big box store looking for hardware, I had pockets full of nuts and bolts jangling around making it sound like I'd just thrown back the saloon doors and stepped up to the bar in my jinglejanglejingle spurs. Then I'd spend the next half hour in that aisle comparing thread pitches and bolt lengths before scouring the bins to find that the stockboy just tossed everything in willy-nilly without regard to its actual size. While there's nothing I can do to solve the latter situation, the former I decided to remedy with a pair of SAE and metric thread checkers.

As I've dived deeper into the nuts and bolts of the Chenowth EV project, I could have purchased one of those thread checker sets that look like a bunch of teeth strung on a witch doctor's necklace that a lot of shops have hanging around. They certainly seem capable of doing the job, and they're fairly easy to find. But while I was shopping around, the Ortus Enterprises Check-A-Thread caught my eye for a few reasons.

First, it's pretty eye-catching. And by that I mean I can see at a glance all the 15 metric and 21 SAE sizes included in the set in high-contrast print without having to turn over and examine a series of threaded pieces. This makes checking the thread sizes much quicker. The big splashes of color also make it easier to grab the right set the first time, though more experienced mechanics used to the blue/metric, red/SAE color scheme may find themselves getting tripped up.

Second, it's just as simple to use as the more traditional sets - perhaps easier because you only need one hand to do so - and it includes built-in rulers for bolt length. Again, nothing that couldn't be done with a separate ruler mounted by the thread checker set, but an all-in-one package makes it more convenient.

Keep reading...

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#1

Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/24/2022 3:43 PM

I came across that in our maintenance shop, I bought one so, I can ID the bolt/nut without having to taking it to the store...

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#2

Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 12:58 AM

I've got several of these...but you need the thread gage too...I found out...

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#3

Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 4:29 AM

Before metric bolts became ubiquitous,I could tell a bolt or screw by sight,even the small 10/24 vs 10/32 screws.Did not need a gauge.Then the metrics started becoming more prevalent,and some of the sizes are very close to the SAE sizes,it is hard to tell them apart on sight.

Metric is a good system,if you cut your teeth on them from the start,but it requires a little conversion in my mind back to the SAE sizes for comparison to get a mental image of the size.

Some metric sockets will work for SAE,such as 17 mm for 11/16, 19 mm for 3/4, 13mm for 1/2 etc.Not a perfect fit,but close enough for most purposes.Some of the metrics work better than SAE on worn or rounded SAE bolts or nuts,being slightly smaller.

A 14 mm works great on a rusted exhaust manifold bolt,because it is a very tight fit.

I guess the mixed system will be around for long time.

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#6
In reply to #3

Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 8:44 AM

That’s is what threw me off. I have thread gage like SE,… my eyesight isn’t wasn’t it use to be,… and getting worse.

I thought these were a waste of money… until I started using it…

Our local big box stores have them also. Which is great.

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#4

Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 4:58 AM

You can only do so much with a thread gauge System like you show.

But what about Whitworth, BA, CEI, metric fine, metric coarse and metric extra fine, SAE/AF, UNC/NC and then there is Brass thread, Aeroquip, and all those other taper fittings, but lets not forget NPTT, NPTP, BSP, BSPT, and then there is the GAS threads, Conduit threads in metric and imperial. Do I need to go on?

Here in the antipodes we got every form of thread that the enlightened threw at us so when doing my trade it was a nightmare to find the correct tap, die, dienut and even some devices had manufacturer specific threads.

Then there were the Buttress, Acme sounds like Wylie Coyote joke, and other square and not so square threads. At least the USA had their size and thread profile not a blendomatic country burdened with all manner of throw off colonial cripplers.

Now is that tractor made in England sporting BSW, BSF, UNC, UNF, least it is not metric since they didn't like Europeans back then.

I will leave you with this thought "Smile a bolt is just a threaded nail so get a bigger hammer"!

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#5
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 5:05 AM

A hammer is good on bolts, but don't hit your nuts with it.

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#7
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 9:44 AM

Nuts are just thick washers aren't they?

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#8
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 11:17 AM

I was lucky to find a set of Whitworth wrenches and sockets at a Sears store in Illinois (circa 1960s,) and I still have them. But my son may need them for a Merryweather item he now has.

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#13
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/28/2022 3:39 AM

Well I have a full set of whitworth sockets up to 3/4", open ended and ring spanners from my apprenticeship for being an ex English colony we had all the Anguish castoffs.

Along with that I have the same in AF for the GE and also metric equivalents for the ASEA so Whitworth are not that rare for this pond life. Lucky find for you.

Still there are the fitzall Shifting spanner, monkey wrench, adjustable wrench and for the nuts or bolts you have just rounded there are Stilson wrenches/pipe wrenches or to get really brutal the welder and length of bar, ah the choices are endless.

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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 1:11 PM

At some point you just cut the head off and punch or drill the thing out and replace it with something you know...and of course you'll need the proper hardness and material for that application...lol

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#11
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 2:25 PM

I have to say, when I'm doing plumbing around the house,... I'm glad there is a Home Depot' at al by my home with 2 miles. because it appears I always have to make another trip for plumbing parts, that I didn't get the first time.

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#10
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 2:06 PM

Canada is also pretty much a mixed bag. At least back in the 60's if it was a Honda it was metric, if it was GM / Ford it was UNC / UNF.

Now your vehicle "made in USA / Canada" is a mixed bag - such as a Bosch alternator being metric and the wheel nuts UNC.

Then you get sloppy nuts / bolts and it gets really tough to identify. I have seen UNC threads apparently cut on a metric machine and they are approximations. Much like some of the approximations of metric cut on standard machines. OK for short running nuts but a deep threaded hole binds.

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#12
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/25/2022 2:30 PM

the problem I have with UNC and Metric, I have my home and a vacation home,... And I never have the right tool/wrench when needed its always at the wrong place.

Hand tools such as wrenches, I have a couple of sets, and try to keep them at each place,... but they do migrate home... , fortunately, or unfortunate, I have a Tractor Supply that just opened up a few minutes from home...

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#14
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/30/2022 5:37 PM

As I recall, Canada decided to go metric because it was led to believe the U.S., it's major trading partner, would be going metric. So we started to change over to be ready. We got halfway there and then learned that the U.S. was not going metric. We have been halfway there ever since.

I still think that Fahrenheit is the best scale for non-scientific use. There are more degree divisions in the temperature range in which humans live, enabling a whole-number, fine-tuned communication of outside temperature conditions (thermometer reading and wind-chill).

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#15
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Re: I Love This Tool: Ortus Enterprises Check-A-Thread

03/31/2022 7:56 AM

It was determined that we were going to be metric in 5 years… and that was 50 years ago.

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