The Bordo 2 x 0.81 BA Bottoming HSS Tap is a precision threading tool from Bordo’s High Speed Steel (HSS) range, engineered to cut **British Association (BA)** threads right to the bottom of blind holes with minimal thread run-out. Ideal for precision engineering, instrumentation, modelling and fine-work applications, this bottoming tap delivers accurate, high-quality internal BA threads for reliable assembly and fit-ups.
Manufactured from premium High Speed Steel, this BA bottoming tap features a short chamfer (bottoming lead) that enables full thread engagement in restricted or blind-hole applications. BA thread forms were historically developed for fine-pitch precision work and are still widely used in miniature and specialist assemblies, featuring a rounded crest and root with a 47.5° thread angle. Designed for both hand and general machine use, this tap performs reliably in aluminium, brass, bronze, plastics and mild steels.
Bordo is a trusted industrial tooling brand in Australia, known for high-quality cutting and threading tools. Industrial Shed ensures you have fast access to this essential BA bottoming tap when you need it on site or in the workshop.
Product Type: Bottoming HSS Tap
Brand: Bordo
Thread Size: 2 x 0.81 BA (British Association)
Material: High Speed Steel (HSS)
Lead: Bottoming (approx. 2 threads)
Thread Form: BA (British Association, 47.5° angle)
Drill Diameter (approx): ~4 mm (pilot hole for 2 BA)
Overall Length (approx): ~58 mm
Part Number: 3044-2B
Application: Bottoming BA thread cutting in blind holes for precision and fine mechanical work
► Key Features
‣ 2 x 0.81 BA fine thread form for miniature and precision component threading
‣ Bottoming lead design ensures minimal thread run-out to full depth
‣ High Speed Steel construction for strength, wear resistance and long life
‣ Suitable for both hand and general machine use
‣ Ideal for aluminium, brass, bronze, plastics & mild steels
► Why Precision Technicians and Tradies Buy This
‣ Achieve full-depth BA threads even in blind-hole conditions
‣ Excellent finish and consistent thread quality for fine-work and precision assemblies
‣ Durable HSS build for reliable workshop performance
‣ Versatile across precision engineering, modelling, instrumentation and maintenance tasks
‣ Trusted Bordo tooling quality backed by Industrial Shed’s fast dispatch and trade support
► Stock won’t last — get yours now at Industrial Shed!
At Industrial Shed, we know you need your gear fast and without the runaround. Here’s what makes our shipping better:
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