I have a 700 action that I trued up that was about as crooked as any I have ever worked on. It took a bunch (probably .030 or slightly more) to get it corrected. The ID of the action threads now measure 1.018 and are 16 pitch of course. Anyone have the appropriate calculation for the OD of the barrel tennon based on that dimension. Ive looked through my machinists handbook and can't find the info. Thanks in advance for the help.
Thread OD Calculation Question
- Thread starter STS
- Start date
It's all in Machinieries Handbook but IIRC it is expressed as flat width and you have to extrapolate height from that on a 60° v thread.
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UN imperial screw thread calculator
Stumpy1
Gold $$ Contributor
Hi STS,
Someone way smarter than me will likely be along any minute now, but I calculate (using trig), a diameter of 1.129", going to a sharp point, using your 1.018 diameter in the original post.
Basically, the thread depth for a given pitch doesn't change, regardless of the diameter of whatever you are threading.
I would turn a stub to 1.120" and see how that works out.
Hope this is useful (and perhaps even correct
)
Frank
Someone way smarter than me will likely be along any minute now, but I calculate (using trig), a diameter of 1.129", going to a sharp point, using your 1.018 diameter in the original post.
Basically, the thread depth for a given pitch doesn't change, regardless of the diameter of whatever you are threading.
I would turn a stub to 1.120" and see how that works out.
Hope this is useful (and perhaps even correct
)Frank
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