Acrow AK1-050EXT Extension – 50 mm Somta Series 551 - HSS Short Hand Tap 1/2" UNF Second (Intermediate) 10🔹 Thread Standard: Unified National The Acrow ER2565 is 2452900 Insize 90° Flat Edge Square 100x70mm Range Series 4791-100

Acrow AK1 050EXT Extension – 50 mm Somta Series 551 HSS Short Hand Tap 1 2" UNF Second (Intermediate) 10🔹 Thread Standard: Unified National The Acrow ER2565 is 2452900 Insize 90° Flat Edge Square 100x70mm Range Series 4791 100 10🔹 Thread Standard: Unified National Fine (UNF)🔹 Thread Tolerance Class: ISO 2 (2B)🔹 Flank Angle: 60°🔹 Tap Type: Spiral Flute Short Machine Tap🔹 Helix Angle: 35° Right Hand🔹 Cutting Direction: Right Hand🔹 Application: General Purpose Blind Hole Tapping🔹 Shank Standard: ISO 529🔹 Material: HSSE V3 (High Speed Steel)🔹 Hole Type: Blind Hole 1 4 20 UNC x 3 8 16 UNC Thread for reliable and versatile thread repair