ASME B1.20.3 : 1976 : R2013

Table of Contents

Section 1 Product Threads<br>1.1 Introduction<br>1.2 Thread types<br>1.3 Thread Designation and Notation<br>1.4 Applications<br>1.5 Assembly Limitations<br>1.6 Thread Form and Tolerance<br>1.7 Basic Threads<br>Appendix A - Letter Symbols and Formulas<br>Appendix B - Suggested Tap Drill Sizes for<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Internal Dryseal Pipe Threads<br>Appendix C - Special Short, Special Extra Short,<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Fine, and Special Diameter-Pitch<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Combination Dryseal Pipe Threads

Abstract

Includes two classes of NPTF Dry-seal pipe threads; Class 1 and Class 2 also the classes differ only in inspection requirements, with Class 1 threads exactly those standardized in ANSI B2.2-1968 (inspection of root and crest truncation is required.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	American Society of Mechanical Engineers
ProductNote	Reconfirmed 2013
Pages
ISBN