The Bordo 1-1/2" x 12 UNF Bottoming HSS Tap is a professional threading tool designed to cut full-depth internal Unified National Fine (UNF) threads in blind holes with precision. Part of Bordo’s trusted High Speed Steel (HSS) UNF tapping range, this bottoming tap delivers accurate, reliable fine-pitch thread cutting performance for demanding workshop, fabrication and industrial applications.
Manufactured from premium HSS, this bottoming tap features a minimal lead-in of just two threads, allowing you to tap right to the bottom of a blind hole while maximising thread engagement and quality. The 1-1/2" (inch) major diameter and 12 threads per inch (TPI) UNF thread form is widely used where fine threads are required for greater tensile stress area and resistance to stripping in medium tensile materials. Bottoming taps are typically used after a taper or intermediate tap to complete thread depth in precision assemblies, automotive components and heavy-duty mechanical applications.
Bordo is recognised across Australia for dependable industrial cutting tools engineered to professional standards. Industrial Shed ensures you have fast access to trusted trade-grade taps when you need them on site or in the workshop.
Product Type: Bottoming HSS Tap
Brand: Bordo
Thread Form: UNF (Unified National Fine)
Diameter: 1-1/2" (inch)
Threads per Inch (TPI): 12
Lead Type: Bottoming (two threads)
Material: High Speed Steel (HSS)
Drill Diameter (mm): 36 mm
Overall Length (mm): 149 mm
Part Number: 3034-1.1/2B
Application: Full-depth internal fine-pitch thread cutting in blind holes for workshop and industrial use
► Key Features
‣ 1-1/2" diameter with 12 TPI UNF thread form for fine internal threads
‣ Bottoming lead-in (two threads) for tapping to the bottom of blind holes
‣ Premium High Speed Steel construction for durability and wear resistance
‣ Designed for both hand and general machine use
‣ Ideal for fine-pitch applications in automotive, machinery and industrial assemblies
► Why Tradies and Contractors Buy This
‣ Precise, full-depth internal threading for blind hole applications
‣ Excellent resistance to thread stripping under load
‣ Durable, trade-grade construction for frequent workshop use
‣ Trusted Australian industrial brand backed by Bordo quality
‣ Supported by Industrial Shed’s fast dispatch and trade-focused service
► 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:
Local Delivery, Done In-House: If you're on the Mornington Peninsula, we handle delivery ourselves—no middlemen, no delays. Get your tools the same day or next day, straight from our team to your door.
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For more information, visit Shipping Details: The Essentials.
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What Sets Us Apart?
Fast Turnaround: We don’t mess around. When you need to return an item, we process it quickly so you’re not left waiting. Our goal is to get your refund or exchange sorted fast so you can get back to work.
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No-Nonsense Support: We make returns and refunds straightforward. If there’s a problem, you won’t be stuck in endless back-and-forths. We’re hands-on and get it sorted with minimal hassle.
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For more information, visit Returns & Refunds: Straight Talk.
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