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gemmer
10-07-2014, 03:54 PM
Can anyone tell me the thread size for the rear sight screw for an original '63 Springfield?

Thanks in advance,

Duane
Chris Sweeney
10-07-2014, 04:57 PM
Are you asking about the screw that holds the base to the barrel or the screw that the leaves pivot on?
gemmer
10-07-2014, 05:46 PM
Are you asking about the screw that holds the base to the barrel or the screw that the leaves pivot on?

The base screw. I should have made that clear.
hwaugh
10-07-2014, 06:49 PM
Give me your address and I will mail you a base screw.
gemmer
10-08-2014, 11:17 AM
Give me your address and I will mail you a base screw.

Thanks Harry, but I have the screw. I have a 50/70 1868 TD that uses the same screw for it's sight. It has no windage adjustment. The rifle shoots 5" to the right at 50 yards so I came up with a windage ajustable sight. The problem is the original screw is too short and the head is too wide.

Duane
dhaze
10-08-2014, 01:22 PM
I think if you take the screw to a hardware store they could measure the threading on it.
gemmer
10-08-2014, 01:38 PM
I think if you take the screw to a hardware store they could measure the threading on it.

The screw is a #8 but the thread seems to be non standard. An 8-32 will start but binds up. Can't find any #8s with a different thread to try.

Duane
Chris Sweeney
10-08-2014, 02:38 PM
According to my pitch gauge, they're 28 tpi
gemmer
10-08-2014, 03:56 PM
According to my pitch gauge, they're 28 tpi

Thanks Chris!!

Duane