Left-handed brake drum bolts

[Shawn B.]

I'm trying to find left-handed bolts for the driver's side brake drum on my old Bigfoot. No one has any. They are 1/2" diameter with a very coarse thread of 13tpi. Does anyone know of a supplier?

[mary and bob]

I assume you want a left hand thread, tapered head bolt that holds the wheel on. I can't find any source for them, or a left hand stud, other than the type that is serrated and presses into the drum from the back. Maybe the best solution is to replace the drum with one that has right hand studs

[Jack L]

Rock Auto and Amazon list some left handed wheel fasteners, but not in the sizes you listed.

[Tom Trostel]

The driver's side wheels on my 1980 Bigfoot are secured with left thread bolts. I've not lost any yet. Shawn, did you try marshallshardware.com?

Left Handed Thread Hex Bolts Products - Marshall's Hardware

[Raz]

McMaster Carr has left hand threaded bolts and thread rod. They might have what you are looking for. Be careful, you can easily spend hours on their site looking at everything and forget why you went there. Raz

McMaster-Carr

[SilverGhost]

International used left hand lung nuts and studs for many years on their p/u trucks and Scouts. I have had luck finding replacements at CarQuest and NAPA in the past. You may have to order them.

Jason

[Jack L]

Originally Posted by Tom Trostel

The driver's side wheels on my 1980 Bigfoot are secured with left thread bolts. I've not lost any yet. Shawn, did you try marshallshardware.com?

Left Handed Thread Hex Bolts Products - Marshall's Hardware

Tom, thank you for the Marshall's source. I'm sure it will come in handy some day.

There are lots of left hand threaded lug nuts available and I've seen several of them broken off trying to remove them by turning them the wrong way. What is unusual here is that the OP needs 1/2inch 13 threads per inch product. 1/2 inch is on the small side for a lug nut and 13 threads per inch is a pretty coarse thread.

[Thom Rowland]

Originally Posted by Shawn B.

I'm trying to find left-handed bolts for the driver's side brake drum on my old Bigfoot. No one has any. They are 1/2" diameter with a very coarse thread of 13tpi. Does anyone know of a supplier?

Some older clasic cars use left hand threads for the drivers side wheel bolts (not wheel lugs and nuts ). I have a '53 and a '54 Plymouth that have them. That may be a way to search for them on the internet.

[Glen_]

Originally Posted by Thom Rowland

Some older clasic cars use left hand threads for the drivers side wheel bolts (not wheel lugs and nuts ). I have a '53 and a '54 Plymouth that have them. That may be a way to search for them on the internet.

I agree. Older Chrysler products use left hand nut on the drivers side. When looking check for the letter L stamped into the end of the bolt. It signifies left hand thread.

[Steve Outlaw]

Here you go, easy-peasy.

Hope you don't crap a squealing worm at the price.

Left Hand Thread Grade 8 Tap Bolts Full Thread available at Mutual Screw & Fasteners Supply - www.MutualScrew.com - Mutual Screw & Supply

[WizWid]

These are a bit cheaper

1/2-13 x 2 LEFT HAND BOLT - Model Number: 393569

look to be Grade 5....

[Jack L]

It might be a good time to change hubs and drums to avoid future issues with these.

[Shawn B.]

Thank you to everyone who posted suggestions. Greatly appreciated!. I ended up buying a new drum. Doing some electric brake troubleshooting this weekend.

[Borrego Dave]

Originally Posted by Shawn B.

Thank you to everyone who posted suggestions. Greatly appreciated!. I ended up buying a new drum. Doing some electric brake troubleshooting this weekend.

EXLNT decision