Topics related to Post - 1898 Remington Rifles
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The thread pitch on a Remington 550-1 sear cup/case is 3/8-32 NEF and the tap can be purchased on E-bay. I use a Taper Tap HSG H3 4FL made by REGAL Cutting Tools. Also you will need a Tap Guide like the V-TapGuide by Big Gator Tools which can be purchased from Brownells, INC. I have used these tools with great results. I hope this info is helpful.wbmyers wrote:What is the thread size for the sear spring case? I have one in for repair that the customer cross threaded all to hell.