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Jack, The plunger locking screws are 4-42 thread. Hope this help's..
- we all are grateful to you and Austin Hogan for the great background on thread and thread pitch standards over the past 200 years- The Industrial Revolution would not have developed in America without those standards--Thanks for all your input and research, great read and loaded with data for all who work on our beloved Parker guns.
The Following User Says Thank You to Francis Morin For Your Post:
Dave- great article in current PP
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