Product Overview
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Series & Type: HY‑PRO® NRT (List 14001) HSS‑Co (cobalt high‑speed steel) forming tap—built to form UNC threads in ductile materials without cutting chips
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Thread Size & Class: #12‑24 UNC, H8 tolerance, modified bottom chamfer (2.5 P) for good bottoming performance
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Dimensions:
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Overall Length: 2.375 in
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Thread Length: 0.496 in
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Neck Length: 0.933 in
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Shank Diameter: 0.220 in
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Square Width: ~0.165 in, Square Length ~0.281 in
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Drill Size: Recommended drill (min) ~0.19475 in, max ~0.199 in for pre‑drilling
🛠️ Performance & Features
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HSS‑Co Substrate: Provides excellent hardness and durability compared to standard HSS—ideal for more robust materials and longer tool life
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Forming vs. Cutting: No chips are removed; material is plastically deformed to form threads—this reduces burrs and extends thread root strength, suitable for ductile metals.
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×Chamfer Design: Modified bottom chamfer offers controlled material flow and reduces the chance of forming defects near the bottom of blind holes.
Material Suitability
Forming taps in the NRT series are ideal for materials up to ~32 HRC, including:
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Carbon & alloy steels
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Stainless steels
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Aluminum (including die-cast & wrought)
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Non-ferrous metals like brass and bronze
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Heat-resistant alloys, nickel alloys, and titanium up to 6Al4V (~30 HRC)
Summary: Why Choose This Tap?
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High durability thanks to cobalt-enriched HSS substrate
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No-chip thread forming—clean threads, stronger roots
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Optimized design for bottoming blind holes (#12‑24 UNC)
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Suitable for a broad range of alloys up to ~32 HRC
Warranty:
- We offer a
NO-DOA guarantee within eBay's return policy timeframe to test and inspect
the item to 100% satisfaction.
- We power items
up (if applicable) and test for basic functionality.
- We do not
extensively test most items.
- This item may or may not be in original packaging.
Condition:
* New, Old Stock in OEM Packaging. As Pictured.
* The box or item
might show signs of wear due to shelf wear, etc.