Walter 1/4-28 NF High Speed Steel Plug Tap

Reliable Thread Repair and Creation for Fabricators

In the welding and fabrication shop, stripped threads or the need for new fastening points are common challenges. The Walter 1/4-28NF Plug Tap (SKU: 03B045) is an essential tool for any metalworker's arsenal. Built from robust High-Speed Steel, this tap is designed to cut clean, precise threads into a variety of metals commonly found in the shop, such as aluminum, mild steel, and stainless steel. When you need to tap a hole for a bolt or screw, you need a tool that won't snap under pressure, and Walter delivers that reliability.

This specific tap is a "Plug" tap, which is the workhorse of threading tools. With a 3-5 thread chamfer, it is easier to start in a drilled hole than a bottoming tap, yet it threads deeper than a taper tap. This makes it ideal for through-holes (where the hole goes all the way through the material) and sufficiently effective for blind holes where the thread doesn't need to go all the way to the very bottom. The fine thread pitch (28 TPI) is perfect for applications requiring high strength and resistance to vibration loosening.

Don't let a damaged thread slow down your project. The Walter 03B045 is excellent for chasing and repairing damaged threads or cutting entirely new ones. Its precision-ground design ensures that the tap cuts freely, minimizing the effort required to turn it and reducing the risk of breakage. Whether you are fabricating custom brackets, repairing machinery, or tapping holes in a welding fixture, this HSS tap provides the professional results your work demands.

Shop-Ready Durability

Walter Surface Technologies is known for producing tools that last. This tap's hardened and tempered construction means it stays sharp longer, even when used on abrasive or hard materials. Keep your fabrication projects moving smoothly with high-quality threading tools that perform when you need them most.