Somta Series 389 – 16mm x 60° Inverted Dovetail Cutter Insize American Standard Thread Ring Gage 1/2–13UNC NOGO – Series 4121-1A1N 8🔹 Thread Standard: Metric (M)🔹

8🔹 Thread Standard: Metric (M)🔹 Thread Tolerance Class: ISO 2 (6H)🔹 Flank Angle: 60°🔹 Tap Type: Gun Nose Spiral Point Short Machine Tap🔹 Cutting Direction: Right-Hand🔹 Application: General-Purpose Through Hole Tapping🔹 Shank Standard: ISO 529🔹 Material: HSSE-V3 (High-Speed Steel)🔹 Hole Type: Through Hole

wear-resistant thread repair

They are particularly useful as Weld Purge Plugs

Machining Method: Linishing (belt sanding)

✔ 2-Flute Balance – Efficient chip evacuation and smooth feed

Somta Series 389 – 16mm x 60° Inverted Dovetail Cutter Insize American Standard Thread Ring Gage 1/2–13UNC NOGO – Series 4121-1A1N 8🔹 Thread Standard: Metric (M)🔹Somta Series 389 16mm x 60 Inverted Dovetail Cutter, 6 Teeth, DIN 1833 Form D The Somta Series 389 16mm Inverted Dovetail Cutter is manufactured from premium HSS Co5 (High Speed Steel with Cobalt) and is specifically designed to machine the opposite section of a dovetail slide when used in conjunction with standard dovetail cutters. Manufactured to DIN 1833 Form D standards, this cutter delivers exceptional accuracy, rigidity, and long service life