Somta Series 907 1/2" BSPF Carbon Steel Parallel Pipe Taper Tap

The Somta Series 907 1/2" BSPF Taper Tap is manufactured from high-quality carbon steel and is designed for the initial stage of hand tapping British Standard Pipe Parallel (BSPF) threads in through and blind holes. The taper lead provides a gradual cutting action, making thread starting easier while reducing cutting forces and improving alignment.

Manufactured to BS 949:1951 standards, this right-hand tap features a 55° Whitworth thread form and straight flutes for dependable chip control during manual threading operations. The taper tap is intended to produce the first stage of the thread, preparing the hole for subsequent intermediate and bottoming taps when a complete thread form is required. :contentReference[oaicite:0]{index=0}

Key Features & Benefits

• Premium carbon steel construction
• Taper tap for easy thread starting and reduced cutting loads
• Designed for BSPF (British Standard Pipe Parallel) threads
• Suitable for through and blind hole hand tapping
• Manufactured to BS 949:1951 standards
• 55° Whitworth thread profile
• Straight flute design for reliable chip evacuation
• Right-hand cutting direction
• Ideal for thread cleaning and thread preparation
• Suitable for carbon steels up to Zone 5 materials

Technical Specifications

• Brand: Somta
• Series: 907
• Part Number: 9071271
• Tool Type: BSPF Taper Tap
• Thread Size: 1/2"
• Thread Standard: BSPF (British Standard Pipe Parallel)
• Nominal Diameter: 20.955mm
• Threads per Inch (TPI): 14
• Overall Length (l1): 79.4mm
• Thread Length (l2): 34.9mm
• Shank Diameter (d1): 17.4mm
• Square Size (a): 13.1mm
• Thread Form: 55° Whitworth
• Flute Style: Straight Flute
• Cutting Direction: Right Hand
• Material: Carbon Steel
• Standard: BS 949:1951
• Application: Initial hand tapping of BSPF internal threads

Somta Series 907 BSPF Taper Taps are trusted by machinists and maintenance professionals for their precision and dependable performance. The 9071271 1/2" BSPF Taper Tap provides smooth thread starting and accurate preparation for producing high-quality British Standard Pipe threads.