Colt revolver crane lock screw

gungarage · August 2, 2014, 08:27 AM

Does anyone know what the crane lock screw thread size is. I have tried 5x40 and 5x44 and neither feel right.
Al

gyvel · August 2, 2014, 10:46 AM

For which models? Are you referring to the old 2 piece lock, or the later models with the threaded cap lock?

redhawk45 · August 3, 2014, 04:16 PM

I think you are going to need a Python crane lock screw since it is specific for use by colt in that action. All Pythons used the same screw. Check Numerich gun parts . You will need parts 7,8,9 the screw alone is part 8 and works in conjunction with the spring and detent to hold crane. https://www.gunpartscorp.com/Manufac...thon-36588.htm They appear sold out at the moment but that is what you need. Try Colt Parts.com, or Jack First gun parts.

James K · August 3, 2014, 10:00 PM

The threaded cap type wouldn't be 5x anything; the OP must be referring to the old type crane lock screw (the two-piece type).

FWIW, I get 42tpi on a Police positive, but with so few threads it is hard to be sure. A problem with gun screws is that gun companies like Colt, S&W, Winchester and Remington were around before there were any standards, and they made their own screws to their own specifications for the intended use.

BTW, note that that screw has a double head, so unscrewing it lifts the crane lock also. An ordinary screw will be OK to hold the crane lock in place, but without the double head screw, the lock will have to be pried out once the screw is removed.

Jim

gyvel · August 8, 2014, 03:31 PM

Quote:

The threaded cap type wouldn't be 5x anything; the OP must be referring to the old type crane lock screw (the two-piece type).

Good point. Went right over my head.

August 2, 2014, 08:27 AM	#1
gungarage Junior Member Join Date: September 16, 2008 Posts: 2	Colt revolver crane lock screw Does anyone know what the crane lock screw thread size is. I have tried 5x40 and 5x44 and neither feel right. Al

August 2, 2014, 10:46 AM	#2
gyvel Senior Member Join Date: August 30, 2009 Location: Northern AZ Posts: 7,172	For which models? Are you referring to the old 2 piece lock, or the later models with the threaded cap lock? __________________ As always, YMMV. __________________________________________ MIIAA SIFE

August 3, 2014, 04:16 PM	#3
redhawk45 Member Join Date: July 2, 2012 Posts: 85	I think you are going to need a Python crane lock screw since it is specific for use by colt in that action. All Pythons used the same screw. Check Numerich gun parts . You will need parts 7,8,9 the screw alone is part 8 and works in conjunction with the spring and detent to hold crane. https://www.gunpartscorp.com/Manufac...thon-36588.htm They appear sold out at the moment but that is what you need. Try Colt Parts.com, or Jack First gun parts.

August 3, 2014, 10:00 PM	#4
James K Member In Memoriam Join Date: March 17, 1999 Posts: 24,383	The threaded cap type wouldn't be 5x anything; the OP must be referring to the old type crane lock screw (the two-piece type). FWIW, I get 42tpi on a Police positive, but with so few threads it is hard to be sure. A problem with gun screws is that gun companies like Colt, S&W, Winchester and Remington were around before there were any standards, and they made their own screws to their own specifications for the intended use. BTW, note that that screw has a double head, so unscrewing it lifts the crane lock also. An ordinary screw will be OK to hold the crane lock in place, but without the double head screw, the lock will have to be pried out once the screw is removed. Jim