Traditional Muzzleloading Association

Shooting Traditional Firearms and Weapons => General Interest => Topic started by: BEAVERMAN on July 29, 2011, 12:40:16 PM

Title: Thread size on a Lyman
Post by: BEAVERMAN on July 29, 2011, 12:40:16 PM

OK you GPR gurus, whats the thread size and pitch on the blow out screw on the drum of a Lyman GPR?

Title: Re: Thread size on a Lyman
Post by: 2 Locks on July 29, 2011, 05:57:39 PM

I don't know the threads & pitch, but it takes a 0.5mm Allen wrench

The sixth item down the list is the exact part, direct from Lyman
http://www.lymanproducts.com/store/page155.html (http://www.lymanproducts.com/store/page155.html)
a bit pricey for just a set screw, but it won't break the bank, and you will have the right part.

Title: Re: Thread size on a Lyman
Post by: BEAVERMAN on July 29, 2011, 09:16:34 PM

Quote from: "2 Locks"

I don't know the threads & pitch, but it takes a 0.5mm Allen wrench

The sixth item down the list is the exact part, direct from Lyman
http://www.lymanproducts.com/store/page155.html (http://www.lymanproducts.com/store/page155.html)
a bit pricey for just a set screw, but it won't break the bank, and you will have the right part.

Thanks Dave, still need the thread size so I can buy a tap and chase the hole before installing a new one

Title: Re: Thread size on a Lyman
Post by: 2 Locks on July 30, 2011, 10:39:47 AM

That makes more sense.
You might want to go strait to horses mouth:
http://www.lymanproducts.com/lyman/contact/ (http://www.lymanproducts.com/lyman/contact/)

Title: Re: Thread size on a Lyman
Post by: prairie dog on August 05, 2011, 05:35:33 PM

I would be interested to know the answer if anyone finds out.

Title: Re: Thread size on a Lyman
Post by: Florida Jim on May 01, 2014, 09:53:48 AM

I'm new  here. But I'll see if I can help.
The screw size on the drum is metric "M4x.7"
This is on my 1997 vintage LH GPR.
I hope this helps.

Jim