checking thread size on bore cleaning brush
Can someone tell me how to check the size of threads on both the male and female bore cleaning brush for 22 cal ammo before I buy them?
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I believe they will be 8-32. That covers most everything until you go up to shotgun, or down to 17 caliber. 0 -
Almost all rods and brushes for them in .17 and .20 cal. use 5-40 threads. All .22 and larger rods and brushes use 8-32 threads. A thread pitch gauge will confirm this. Bob 0 -
Thread sizes are pretty well standardized these days but such was not the case a few years back. If you have an old cleaning rod you may have trouble finding the correct brushes these days. Today most caliber brushes have 8-32 threads. The main exceptions are .50 caliber which is 10-32 and .17 caliber which is 5-40. 0
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