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What Screw Pitch Gauge to buy for odd threads on vintage tools?

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Forum topic by Combo Prof posted 07-05-2016 11:23 AM 928 views 0 times favorited 10 replies Add to Favorites Watch
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Combo Prof

2384 posts in 742 days


07-05-2016 11:23 AM

Topic tags/keywords: question screw pitch gauge

So I thought this would be easy, but there are so many different varieties of nearly the same Screw Pitch Gauge tool
that I am getting very confused as what would be best to buy.

Currently I am trying to determine the thread pitch for certain Sargent hand planes. I think it may be 22 tpi.

Anyway I thought I’d pick up a “vintage” Screw Pitch Gauge say a Starret, but omg there are so many varieties?

What do you recommend for checking threading on old tools?

-- Don K, (Houghton, Michigan)


10 replies so far

View HokieKen's profile

HokieKen

1773 posts in 603 days


#1 posted 07-05-2016 04:24 PM

You can buy quality pitch gauges, like this one, relatively cheaply. I would go to e-bay and find a vintage one if it were me. It’s a simple gauge and it’s really pretty hard to get a bad one. FWIW, you can also just go buy some machine screws different pitches, mark them so you know what the pitch is and use them as gauges. Of course, there is no common screw with a 22 pitch… Are you sure it’s not a #12 screw with 20 tpi? That’s what Stanley used.

-- Kenny, SW VA, Go Hokies!!!

View Tim's profile

Tim

3118 posts in 1426 days


#2 posted 07-05-2016 04:55 PM

Except for BSW threads, pretty much every thread gauge checker is going to come with the basics you’ll need. I got a cheap one off amazon that had metric and a wide variety of imperial threads on it. About the only ones it doesn’t have are some of the odd sizes like 17 tpi. It has a lot of odd sizes but not all.

The one difficulty you could have is checking BSW threads since they are 55 degrees it’s harder to get solid confirmation you have the right thread, but you still might be able to see they are lined up to the right pitch.

Here’s WayneC’s blog that lists a lot of the plane threads:
http://lumberjocks.com/WayneC/blog/38068

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Combo Prof

2384 posts in 742 days


#3 posted 07-05-2016 05:26 PM

Kenny: I am quite certain.. The Stanley screws and the common screws don’t fit the Sargent and I also read somewhere online that that the fence rod for the Sargent 79 is 1/4 -22. I also expected it would be the same as Stanley or common thread. I was wrong.

Thanks for the info on quality pitch gauges.

Tim: Thanks for the info. Unfortunately WayneC (nor anyone else) says anything about Sargent planes.

-- Don K, (Houghton, Michigan)

View MadMark's profile

MadMark

978 posts in 918 days


#4 posted 07-05-2016 08:32 PM

When you figure out the thread you need McMaster.com will have it in stock …

M

-- Madmark - Madmark2150@yahoo.com Wiretreefarm.com

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Combo Prof

2384 posts in 742 days


#5 posted 07-05-2016 09:11 PM



When you figure out the thread you need McMaster.com will have it in stock …

M

- MadMark

It seems that MCMASTER.COM does not carry a 1/4-22 tap and die. But I do find it carried by otthers.

-- Don K, (Houghton, Michigan)

View BigYin's profile

BigYin

347 posts in 1881 days


#6 posted 07-05-2016 10:09 PM

Brownells gunsmithing supply carries 1/4-22 or at least did

-- ... Never Apologise For Being Right ...

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Combo Prof

2384 posts in 742 days


#7 posted 07-05-2016 10:09 PM

I did see that.

-- Don K, (Houghton, Michigan)

View Boatman53's profile

Boatman53

1000 posts in 1661 days


#8 posted 07-06-2016 12:40 AM

Don, just face the facts, before long you will have three or four or seven like me. They all work as they should. I think my vintage Craftsman has the most variety, but I could be wrong.
Jim

-- Jim, Long Island, NY Ancorayachtservice.com home of the chain leg vise

View Combo Prof's profile

Combo Prof

2384 posts in 742 days


#9 posted 07-06-2016 12:41 AM

So just pick one and buy it eh!

-- Don K, (Houghton, Michigan)

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Combo Prof

2384 posts in 742 days


#10 posted 07-06-2016 12:53 AM

I bought this Helios Germany Screw Thread Pitch Gauge 4 to 42, I hope it will be fine.

-- Don K, (Houghton, Michigan)

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