HSS Pipe Tap G1/8"-28 BSP & 3/8"-18 NPT Taper Thread Tap 70mm

HSS Pipe Tap – G1/8"-28 BSP Parallel & 3/8"-18 NPT Taper Pipe Tap

Cut clean, precise pipe threads with this high-speed steel (HSS) pipe tap, available in two versatile configurations: a G1/8"-28 BSP Parallel British Standard Pipe thread tap and a 3/8"-18 NPT Taper Pipe tap. Engineered for machinists, plumbers, and DIY enthusiasts alike, this tap delivers accurate, burr-free threads in metal workpieces time after time.

Product Specifications

• Material: High-Speed Steel (HSS)
• Style 1: G1/8"-28 BSP Parallel (British Standard Pipe)
• Style 2: 3/8"-18 NPT Taper Pipe Tap
  • Overall Length: 70mm
  • Thread Head Diameter: 16mm
  • Thread Head Length: 24mm
• Thread Angle: 55°
• Quantity: 1 piece
• Package Weight: 0.025 kg (0.06 lb)
• Package Size: 10cm × 1cm × 10cm
• Made in Mainland China

Key Features

• Premium HSS Construction: High-speed steel provides excellent hardness and wear resistance, maintaining a sharp cutting edge through repeated use on steel, cast iron, aluminium, and other common metals.
• Two Thread Standards Available: Choose the BSP Parallel (G1/8"-28) for pipe fittings common in plumbing and hydraulic systems, or the NPT Taper (3/8"-18) for tapered thread applications in plumbing and gas piping.
• 55° Thread Angle: Machined to the correct 55° angle for accurate BSP thread profiles, ensuring a proper fit with mating fittings.
• Versatile Use: Compatible with hand tapping and machine tapping setups, suitable for workshops, maintenance work, and production environments.
• Compact & Lightweight: Easy to store and carry; ideal as a replacement or addition to your existing tap and die set.

What's in the Box

• 1× Pipe Tap (BSP G1/8"-28 OR NPT 3/8"-18 – your choice of style)

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Authoritative Resource

For guidance on workplace tool safety and proper use of cutting tools, refer to the OSHA Hand and Power Tools Safety Guidelines.

Frequently Asked Questions

Q: What is the difference between a BSP Parallel tap and an NPT Taper pipe tap?

A: A BSP Parallel (G1/8"-28) tap cuts straight, non-tapered threads commonly used in British Standard pipe fittings for plumbing and hydraulic systems. An NPT Taper (3/8"-18) tap cuts tapered threads that seal by thread wedging action, widely used in North American plumbing and gas pipe connections. Make sure to select the style that matches your fitting standard.

Q: What materials can this HSS pipe tap be used on?

A: This high-speed steel pipe tap is suitable for threading a variety of metals including mild steel, cast iron, aluminium, brass, and copper. HSS provides the hardness and heat resistance needed for consistent performance across these common workshop materials.

Q: Can this tap be used for both hand tapping and machine tapping?

A: Yes. This HSS pipe tap is compatible with both hand tapping (using a tap wrench) and machine tapping (in a drill press or CNC machine with appropriate chuck and speed settings). Always use cutting fluid to extend tap life and improve thread quality.

Q: What thread angle does this BSP tap use?

A: The BSP Parallel tap uses a 55° thread angle, which is the standard for British Standard Pipe (BSP) threads. This ensures full compatibility with BSP fittings and connectors.