Bordo – 4 x 0.66 BA Bottoming HSS Tap | 3044-4B
The Bordo 4 × 0.66 BA Bottoming HSS Tap is a precision threading tool from Bordo’s British Association (BA) tap range, engineered to cut fine internal BA screw threads to full depth. Designed for precision engineering, metalwork, instrument making and general fabrication applications, this bottoming tap ensures minimal thread run-out and maximum usable thread engagement for demanding projects.
Made from high quality High Speed Steel (HSS), this tap features the BA 4 thread form with a 0.66 mm pitch — a fine thread standard originally adopted for precision instruments and assemblies. Bottoming taps have a short chamfer (two lead threads) that allows you to complete threads to the base of blind holes after using a taper or intermediate tap. Suitable for both hand and general machine use in medium tensile materials, this HSS tap delivers reliable, clean threads time after time.
Industrial Shed stocks trusted Bordo tooling so you get the performance and dependability you need on site or in the workshop.
Product Type: Bottoming HSS Tap
Brand: Bordo
Thread Size: 4 × 0.66 BA
Thread Form: British Association (BA)
Lead: Bottoming (minimal thread run-out)
Material: High Speed Steel (HSS)
Drill Diameter: 3 mm
Overall Length: 50 mm
Pitch (mm): 0.66
Pack Qty: 1
Application: Precision internal BA threading & bottoming in blind holes
► Key Features
‣ Fine BA 4 thread with 0.66 mm pitch for precision internal threads
‣ Bottoming lead design for full-depth thread cutting in blind holes
‣ Manufactured from durable High Speed Steel for long tool life
‣ Straight flute design suitable for hand or machine use
‣ Ideal for precision instrument, model engineering and metalwork tasks
► Why Tradies and Contractors Buy This
‣ Produces clean, accurate fine BA internal threads
‣ Bottoming design ensures minimal run-out and maximum engagement
‣ Trusted HSS construction stands up to regular use
‣ Great for precision assemblies, tooling and fabrication tasks
‣ Backed by Industrial Shed’s fast dispatch and trade support
► Stock won’t last — get yours now at Industrial Shed!
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