Knowledge bag for when you're in trouble: Nominal sizes and diameters of pipe threads
Common questions and concerns about screws resolved! Screw standards edition.
YAMAWA will respond to the inquiries received from customers. This document also includes some minor speculations. 【Contents】 ■Inquiry I know how to express unified screws like "1/4-20UNC" and "1/2-13UNC" in inches. For the "1/4-20UNC" external thread, I understand that the outer diameter reference dimension is 1/4 of 1 inch (25.4mm), which is "6.35mm." However, the outer diameter reference dimension for the pipe thread "G1/4-19" (old standard: PF1/4-19) is 13.157mm, which does not match at all. How should I understand this? *For more details, please refer to the PDF document at the link below.
- Company:Yamawa Manufacturing Co.,Ltd.
- Price:Other