Somta Series 581 – 1" HSS NPS Parallel Pipe Tap Bottom Insize Thread Plug Gauge 3/8"-19 (BS21-1985) BPST Series - 4646-3C19 ✔ Thread Size: 1-1/4" UNC 2103-10 Insize Metric Outside Micrometer 800-900mm Range Series 3205-900 while also protecting newly

Somta Series 581 – 1" HSS NPS Parallel Pipe Tap Bottom Insize Thread Plug Gauge 3 8" 19 (BS21 1985) BPST Series 4646 3C19 ✔ Thread Size: 1 1 4" UNC 2103 10 Insize Metric Outside Micrometer 800 900mm Range Series 3205 900 while also protecting newly ✔ Thread Size: 1 1 4" UNC (Unified National Coarse)✔ Standard: ISO 529✔ Material: High Speed Steel (HSS) for enhanced strength and wear resistance✔ Thread Form: 60° flank angle for precision and secure thread cutting✔ Tolerance Class: ISO 2 (2B) for a standard thread fit✔ Flute Type: Straight flute for effective chip removal✔ Lead Type: Intermediate lead for balanced cutting performance✔ Cutting Direction: Right hand cutting✔ Application: General purpose threading across various materials Engineered to perform in extreme cold conditions ( 65°C 85°F)