Tech Info
Main Links

• UN UNS UNC UNF UNEF Series Gages
• Cylindrical Plain Gages
• Metric Series Gages
• National Pipe Thread Gages
• Variable Style Gages
• British Standard Gages
• Medical Luer Fittings Gages
• Step Pin Gage Design Page
• Articles about threads in Magazines
• Pg Steel Conduit Thread per DIN 40430
• Thread Data Charts

UN Series Gages

• American Gage Design (AGD) Standardized Components
• Dynamics of Gaging
• MIL-S-7742 and How It Relates to Thread Gages
• MIL-S-8879 and How It Relates to SAE AS8879
• N vs. UN
• Pitch Diameter Charts
• Sealing Wax
• Unified National Thread: ANSI vs. BS vs. ISO vs. JIS
• UNJ vs. UN
• UNR vs. UN
• Using Set Plug Gages
• Why Gages Grow

Cylindrical
or Plain Gages

• American Gage Design (AGD) Standardized components
• Dynamics of Gaging
• Gage Maker's Tolerance Calculator and Charts
• Why Gages Grow

Metric Series Gages

• American Gage Design (AGD) Standardized components
• Dynamics of Gaging
• Pitch Diameter Charts
• Sealing Wax
• Using Set Plug Gages
• Why Gages Grow

National Pipe Thread Gages

• NPT vs. NPTF

Variable Style Gages

• MTG Catalog
• Snap Gages, Threaded, Knife Edge Style, Maintenance
• Starrett 1120 Thread Comparator
• Starret Technical Info
• Why Use Thread Snap Gages

British Standard Gages

• BS-2779
• DIN-240-1923 vs BS-84
• Why Gages Grow

Articles about threads in Magazines

• Hot glue, the new sealing wax.
• Threading methods compared.
• Are You Beating Your Gages to Death?
• Cut costs on UNR threads.

National Pipe Thread Gages

• Before Plate Pipe Gages
• NGT = National Gas Taper
• NPT vs. NPTF