Somta Series 546 HSS Spiral Flute Tap UNC 3 8" (Standard) Insize Outside Neck Vernier Caliper 0 150mm Series 1287 1503 Socket Guide: Includes a socket Drilling Range 6 30mm Socket Guide: Includes a socket guide that centers the drive shaft for easier and more accurate operation secure insert placement ✅ Optimized for Through Hole Applications – Gun nose spiral point design efficiently directs chips forward for uninterrupted threading 🔹 Thread Size: UNC 3 8"🔹 Thread Standard: Unified National Coarse (UNC)🔹 Thread Tolerance Class: ISO 2 (2B)🔹 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: HSS (High Speed Steel)🔹 Hole Type: Through Hole