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Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 12:01 am
by Matt in California
I am working on my Martin Perry project. It is missing a few of these. Anyone have a suggestion where I can find a replacement?
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Thanks!

Matt

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 12:23 am
by Allan
Matt, I have restored to bronze welding a washer under the bolt head and dressing them down to suit. Works ok if you only need one or two.

Allan from down under.

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 12:27 am
by Pep C Strebeck
You might try looking at elevator bolts. They are pretty close to what you are looking for, but they seem to vary by the manufacturer, the head profile differs a bit (from manufacturer to manufacturer). I needed some when attaching a Kari-Keen trunk to my Model A.

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 12:28 am
by Mark Chaffin
Do a search for "step bolts".
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Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 12:30 am
by Mark Chaffin
Call Dave at the garage on Monday. We have several sizes in stock if you can't find any elsewhere. (951) 735-4791

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 2:34 am
by TRDxB2
Try Grainger - & its step bolts that have the wider head
https://www.grainger.com/category/faste ... step-bolts
There are also Timber bolts but harder to find
They are different as the underside is not square https://www.portlandbolt.com/products/bolts/timber/

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 8:17 am
by John kuehn
I’ve seen them at the larger Ace hardware stores.

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 11:25 am
by RajoRacer
What size you needing Matt ?

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 12:14 pm
by ModelTWoods
I would agree the STEP BOLTS are closer in appearance to the original. All the ELEVATOR BOLTS that I have seen used on conveyor equipment in grain elevators, have a large diameter head, but they are flat and not 'domed'.

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 12:16 pm
by Dallas Landers
I used elevator bolts. Turned down on my lathe to the shape I wanted to match for the 8in1 truck body. I was ably to located the bolt
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s for the MP cab from old salvaged hardware I had collected and friends collections.

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 1:59 pm
by Don
Do you need 5/16" or 3/8" step bolts? How many do you need? I may be able to help.
Don

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 5:09 pm
by Matt in California
Wow I appreciate all the offers for help!

I started at Ace Hardware and asked the staff a while back and they said they didn’t have those. I recently met the “bolt guy” that actually stocks the bolts for all the stores he also confirmed that they don’t carry it. The guy actually mentioned that I could try other locations that may have old stock.

The project is stored offsite but here are two bolts (in top of photo) that I took off. I believe they were both used to hold a fender bracket. One has a square that you normally find under a carriage bowl. The other one barely has a rib. Is that a timber bolt? In any case one of them must’ve been replaced. Does anyone know what Martin Perry originally used?
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The originals were cut off by a previous owner. I happen to have one bolt that would work as a replacement. It is 2 1/4 inches long and 5/16 diameter.

Thanks!

Matt

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 5:27 pm
by Scott_Conger

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 5:37 pm
by John kuehn
Amazon has all kinds of step bolts.

Re: Where to buy extra large head carriage bolt

Posted: Sun Oct 30, 2022 11:18 pm
by BuddyTheRoadster
Check out Blacksmith Bolt as well. https://www.blacksmithbolt.com/ I use them for proper milled wood screws in my pump organ repairs.