Walter 1 Inch 12 NF HSS Bottoming Tap for Blind Holes

Walter 1-12 NF Bottoming Tap: Durability Meets Precision

Achieve superior threading results with the Walter 1-12 NF Bottoming Tap (SKU: 03B166), a high-performance cutting tool built for the professional welder and fabricator. When working with blind holes—holes that do not go all the way through the workpiece—standard taps often leave unthreaded space at the bottom. This bottoming tap solves that problem with its minimal chamfer of just 1-2 threads, allowing you to cut full-depth threads effectively and maximize the grip length of your fasteners.

Constructed from high-quality High Speed Steel (HSS), this tap is designed to resist heat and abrasion, two common factors that degrade cutting tools. The precision-ground flute geometry aids in efficient chip evacuation, although bottoming taps are typically used after a plug or taper tap has cleared the bulk of the material. This specific model features a 1-inch diameter with 12 threads per inch (National Fine), a configuration often used where finer adjustments or greater tensile strength are required compared to coarse threads.

Walter Surface Technologies is a leader in industrial solutions, and their cutting tools are no exception. This tap is compatible with a wide range of materials, including tough stainless steel alloys, standard mild steel, and non-ferrous metals like aluminum. By investing in high-quality HSS tooling, you reduce machine downtime caused by broken or dull taps and ensure that every threaded hole meets strict tolerance standards. Add this essential finishing tool to your die and tap set for complete threading capabilities.

Features & Benefits

• High Speed Steel Body: Retains hardness at high temperatures for faster cutting speeds.
• Short Chamfer: Threads to the bottom of blind holes for maximum thread engagement.
• Versatile Material Use: effective on stainless, steel, and aluminum.
• Precision Ground: Ensures accurate thread profile and pitch.