Somta Series 521 - HSS Straight Flute Short Hand Second (Intermediate) Tap BSW 1/8" x 40 TPI Insize GO Thread Ring Gauge 1/4"-20 UNC Series - 4633-1B1 High-Quality Stainless Steel Inserts: Provides Prevents Stripping Wear Protects

Somta Series 521 HSS Straight Flute Short Hand Second (Intermediate) Tap BSW 1 8" x 40 TPI Insize GO Thread Ring Gauge 1 4" 20 UNC Series 4633 1B1 High Quality Stainless Steel Inserts: Provides Prevents Stripping Wear Protects High Quality Stainless Steel Inserts: Provides durable Vernier Caliper: Range 0 150mm 0 6" ✔ Thread Size: 1 8" BSW (British Standard Whitworth)✔ Standard: ISO 529✔ Material: High Speed Steel (HSS) for enhanced strength and wear resistance✔ Thread Form: 55° flank angle for precise and secure Whitworth threading✔ Tolerance Class: Class 2 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 making it ideal for applications requiring secure and reliable British Standard Whitworth threads