Product Description Reviews BOLT & NUT THREAD CHECKER METRIC, IMPERIAL AND WHITWORTH Q608 A must have for any workshop, this set allows you to quickly and easily identify both external & internal threads on bolts and nuts etc. The 3pc set includes popular sizes for metric in coarse & fine threads, Imperial in both UNF & UNC along with Whitworth. The set comes threaded on stainless steel wire & includes our specially designed ID ruler to able to quickly check bolt lengths. Features Metric 60 Degree (Coarse & Fine) M4 x 0.7, M5 x 0.8 M6 x 1.0 M7 x 1.0 M8 x 1.0 M8 x 1.25 M10 x 1.0 M10 x 1.25 M10 x 1.5 M12 x 1.25 M12 x 1.5 M12 x 1.75 Imperial 60 Degree (UNC & UNF) #6 – 32tpi #8 – 32tpi #10 – 24tpi #10 – 32tpi 1/4″ x 20tpi 1/4″ x 28tpi 5/16″ x 18tpi 5/16″ x 24tp 3/8″ x 16tpi 3/8″ x 24tpi 7/16″ x 14tpi 7/16″ x 20tpi 1/2″ x 13tpi 1/2″ x 20tpi Whitworth 55 Degree (BSW) 5/32″ x 32tpi 3/16″ x 24tpi 7/32″ x 24tpi 1/4″ x 20tpi 5/16″ x 18tpi 3/8″ x 16tpi 7/16″ x 14tpi 1/2″ x 12tpi 2 Reviews 5 Thread checker Posted by Victor on 3rd Jul 2024 Excellent product, delivered very quickly