Dynabrade 97571 1/2" NPT Male Safety Coupler 
Insize 4131-5D1, AMERICAN STANDARD THREAD PLUG GAGE, 5/16-18UNC, 6928640358968
$87.51
Class 2B.
Standard ANSI/ASME B1.2
Supplied with Go and No-Go gages together
Supplied with manufacturer inspection certificate.
Related products
Air Tool Accessories
Dynabrade 94992 1/4″ Male Composite-Style Coupler with 1/4″ Male Plug Assembly
$46.24
Air Tool Accessories
Dynabrade 94993 1/4″ Male Composite-Style Coupler with 1/4″ Female Plug Assembly
$42.43
