Somta Series 541 - HSS Straight Flute Short Hand Taper (First Tap) UNC 1/4" x 20 TPI 4760-1100 With its stainless steel body

With its stainless steel body

They are the most popular and can be used for through holes

25mm HSS Hand Reamer

Range: Suits tap sizes from 4mm to 12mm square

providing a robust yet manageable design for reliable performance

Somta Series 541 - HSS Straight Flute Short Hand Taper (First Tap) UNC 1/4" x 20 TPI 4760-1100 With its stainless steel bodyAchieve precise and reliable threading with the SOMTA HSS UNC Thread Tap No. 1 4" Taper. Designed for general hand tapping, this high speed steel (HSS) tap ensures durability and precision, making it perfect for both through hole and blind hole tapping applications. Key Features: Thread Size: No. 1 4" UNC (Unified National Coarse) Standard: ISO 529 Material: High Speed Steel (HSS) for exceptional durability and wear resistance Thread Form: 60 flank