Meet the Milwaukee High Carbon Steel SAE Straight Plug Tap in 9/16-12 NC — a purpose-built solution for creating durable, clean internal threads in metalwork projects. Crafted for demanding applications, this plug tap is built to handle tougher materials with confidence, so you can tackle automotive, fabrication, and workshop brazing tasks without second-guessing your tools.
Overview
Designed for straight, full-depth threading, this tap is optimized for 9/16-12 NC applications. The high carbon steel construction delivers the rigidity needed to cut precise threads in steel and other hard metals, while the black oxide finish helps resist corrosion and promotes smoother chip flow during tapping. With a compact 3.25-inch length, it’s a versatile addition to any standard tap set.
Key Features That Set It Apart
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Material: High carbon steel for enhanced durability in demanding metalworking tasks.
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Finish: Black oxide coating to improve corrosion resistance and reduce friction during cutting.
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Size and Thread: 9/16-12 NC (National Coarse) for robust internal threads in thicker materials.
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Style: Straight plug tap, providing clean, straight-thread cuts with consistent engagement.
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Length: 3.25 inches, offering enough engagement in deeper holes while remaining maneuverable in tight spaces.
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Packaging: Carded, single-piece packaging—convenient for shop organization and resale.
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Included: Drill bit not included; designed to be paired with your existing drill and tap wrench.
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Brand: Milwaukee — a trusted name in professional-grade tooling and metalworking accessories.
Why This Tap Matters for Your Projects
Whether you’re repairing a threaded hole in a steel chassis, creating new threads in a metal plate, or assembling components that demand robust, load-bearing fasteners, this plug tap delivers predictable, durable threads. The 9/16-12 NC size is a common coarse-thread specification that tolerates slightly less precise hole prep while delivering strong engagement under load, making it ideal for automotive frames, machinery housings, and structural metalwork.
Ideal Use Scenarios
- Repairing or creating internal threads in steel, cast iron, or other hard metals in a home workshop or professional shop.
- Fabricating or refurbishing automotive components that require a strong, reliable 9/16-12 NC thread.
- Upgrading or restoring equipment housings and frame members where durable coarse-thread taps are preferred.
- Incorporating this tap into a broader Milwaukee toolkit for maintenance, repair, and fabrication tasks.
How to Use (Practical Tips)
- Secure the workpiece firmly and ensure the hole is drilled to appropriate size for a 9/16-12 NC thread (consult standard tapping charts if needed).
- Align the tap straight in the hole and use a tap wrench or die handle to begin threading with steady, even pressure.
- Keep the tap well-lubricated with cutting oil or threading fluid to reduce heat and extend tool life.
- Turn the tap a small amount forward, then back off slightly to break and clear chips. Repeat until the full depth is reached.
- Clean the threads and inspect for smooth operation when a fastener is threaded in.
Specifications at a Glance
- 9/16-12 NC
- Finish: Black Oxide
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Material: High Carbon Steel
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Style: Straight Plug Tap
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Length: 3.25 inches
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Drill Bit Included: No
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Packaging: Carded
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Quantity: 1
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Brand: Milwaukee
