The Bordo 1" x 11.5 NPT Bottoming HSS Tap is a professional-grade pipe threading tool from Bordo’s High Speed Steel (HSS) NPT tap range, engineered to cut internal tapered pipe threads right to the base of blind holes with precision. Designed for plumbing, fluid systems, workshop and trade applications, this bottoming tap delivers dependable thread engagement and accurate thread profiles for quality pipe connections.
Manufactured from robust HSS, this 1" diameter tap features a 11.5 threads-per-inch (TPI) NPT thread form based on the ANSI/ASME B1.20.1 standard for National Pipe Tapered threads, which form a seal as they are tightened. The bottoming lead (two threaded lead) minimises thread run-out, allowing you to achieve the deepest possible threads when tapping to the bottom of blind holes — essential for fittings where full engagement is required. Suitable for both hand and general machine use, this HSS tap performs reliably across medium tensile materials such as brass, aluminium and mild steel.
Trusted and widely used by tradespeople, Bordo’s precision engineering ensures consistent results job after job. With Industrial Shed’s fast dispatch and trade support, this essential piping tool is ready when you need it.
Product Type: Bottoming HSS Tap
Brand: Bordo
Thread Size: 1" x 11.5 NPT
Thread Form: National Pipe Taper (NPT) – ANSI/ASME B1.20.1 Standard
Lead: Bottoming (minimal thread run-out)
Material: High Speed Steel (HSS)
Drill Diameter: 29 mm
Overall Length: 109 mm
Pitch (TPI): 11.5
Pack Qty: 1
Application: Tapered pipe thread cutting to bottom of blind holes & general NPT tapping
► Key Features
‣ 1" diameter with 11.5 TPI NPT thread form for secure tapered pipe connections
‣ Bottoming lead ensures minimal thread run-out in blind holes
‣ Manufactured from durable high speed steel for long service life
‣ Straight flute design suitable for hand or general machine use
‣ Meets ANSI/ASME B1.20.1 tapered thread standards
► Why Tradies and Contractors Buy This
‣ Produces clean, accurate tapered NPT internal threads
‣ Bottoming design allows maximum usable thread depth
‣ Trusted HSS construction stands up to workshop and job site use
‣ Ideal for plumbing, hydraulics, pneumatics and mechanical assembly
‣ Backed by Industrial Shed’s fast dispatch and trade support
► Stock won’t last — get yours now at Industrial Shed!
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