grip screw seized

mrerick · 09-01-2013, 10:41 AM

Peg, have you solved the magazine well alignment problem? If not, it might be necessary to get the frame to someone with the correct mandrel to form it back into shape.

If you chase out the threads, be sure to use the right tap. These are English Whitworth threads. They have a different pitch angle (55 degrees) when compared with metric and SAE threads.

3/16" x 30 TPI Whitworth 55 degree threads

sheepherder · 09-01-2013, 11:34 AM

This thread seems like a good candidate for a 'sticky', so I thought I would throw in my $.02 worth...

A few weeks back, I decided to do some preventive maintenance on my 10 year old Nissan Xterra...I bought it new and had never changed the [platinum] spark plugs...They seemed to work just fine, but that is what PM is about...The # 1 plug wouldn't budge (aluminum heads!), so after checking the appropriate forum, I bought a spray can of PB Blaster...Ran the truck for a half hour to warm everything up, sprayed the plug holes, let it sit 4 hours...And started tightening/untightening the # 1 plug...It moved very slightly each way, then suddenly gave a 'screech' and unscrewed right out...After that one, I knew if it 'screeched', it was unscrewing...

I've used Kroil, Marvel Mystery Oil, BreakFree, 3in1 Oil, TapFree, many others...PB Blaster really impressed me...

09-01-2013, 10:41 AM	#1
mrerick Super Moderator - Patron LugerForum Life Patron Join Date: Dec 2009 Location: Eastern North Carolina, USA Posts: 3,920 Thanks: 1,377 Thanked 3,135 Times in 1,518 Posts	Peg, have you solved the magazine well alignment problem? If not, it might be necessary to get the frame to someone with the correct mandrel to form it back into shape. If you chase out the threads, be sure to use the right tap. These are English Whitworth threads. They have a different pitch angle (55 degrees) when compared with metric and SAE threads. 3/16" x 30 TPI Whitworth 55 degree threads __________________ Igitur si vis pacem, para bellum - - Therefore if you want peace, prepare for war.

09-01-2013, 11:34 AM	#2
sheepherder Lifer Lifetime Forum Patron Join Date: Feb 2009 Location: ...on the 'ol Erie Canal... Posts: 8,197 Thanks: 1,416 Thanked 4,462 Times in 2,336 Posts	This thread seems like a good candidate for a 'sticky', so I thought I would throw in my $.02 worth... A few weeks back, I decided to do some preventive maintenance on my 10 year old Nissan Xterra...I bought it new and had never changed the [platinum] spark plugs...They seemed to work just fine, but that is what PM is about...The # 1 plug wouldn't budge (aluminum heads!), so after checking the appropriate forum, I bought a spray can of PB Blaster...Ran the truck for a half hour to warm everything up, sprayed the plug holes, let it sit 4 hours...And started tightening/untightening the # 1 plug...It moved very slightly each way, then suddenly gave a 'screech' and unscrewed right out...After that one, I knew if it 'screeched', it was unscrewing... I've used Kroil, Marvel Mystery Oil, BreakFree, 3in1 Oil, TapFree, many others...PB Blaster really impressed me... __________________ I like my coffee the way I like my women... ...Cold and bitter...