Transcription of THREAD GAGING REFERENCE GUIDE
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Know your threads, L. S. STARRETT COMPANY121 Crescent Street Athol, MA 01331 Telephone (508) 249-3551 Fax (508) 249-8495 Table of ContentsSECTION 1:Fundamentals of Screw THREAD Technology .. 4 - 7 SECTION 2:Definitions and Terminology .. 8 - 11 SECTION 3:Gage Design Contacts .. 12 - 13 SECTION 4:Technical Considerations .. 14 - 23 SECTION 5:Plating, Metric and RFQ .. 24 - 274 Screw THREAD DesignationScrew THREAD DesignationScrew THREAD DesignationScrew THREAD DesignationScrew THREAD DesignationEXAMPLE: .3125 - 24 UNJF - 3A (B).
width of the thread ridge and the thread groove equal. Pitch Line. The pitch line is linear and parallel to the center line of the pitch cylinder. De-fined where thread ridge and thread groove are equal along the length of the thread. Thread Axis. The thread axis is the axis of its pitch cylinder. Actual Size. An actual size is a measured size ...
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