number 12 UNC / UNF Helical Go / NoGo Screw Plug Thread Gauge
Specification Size: number 12 UNC / UNF Select from options: UNC 12-24 UNF 12-28 Wire Insert Thread Go / No-Go Screw Plug Thread Gauges for tapped holes of wire insert thread Part Number ES-12093Visit the JLS Supplies Ltd website for more information on number 12 UNC / UNF Helical Go / NoGo Screw Plug Thread Gauge