UNS Taps | McMaster-Carr

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436 Products

Threading

General Purpose Taps

Cut threads into most metal and plastic.

Left-Hand General Purpose Taps

Tap threads for left-hand threaded fasteners.

Economy Carbon Steel Taps

Often used for thread repair and occasional hand tapping, these carbon steel taps can thread holes in most metal and plastic, but they have a shorter tool life than standard taps.

Chip-Clearing Taps for Through Holes

Keep chips clear while tapping. Also known as gun taps, these have spiral-point flutes that push chips ahead of the tap and out of through holes.

Thread Mills

Cut a range of thread sizes with a single tool. These thread mills can also produce both right-hand and left-hand threads.

Spark Plug Thread Taps

Use these high-speed steel taps to cut and repair threads in the sizes needed to accept spark plugs.

Tap Sets

These taps are for use on most metal and plastic.

Left-Hand Tap Sets

For start-to-finish tapping of left-hand threads, these sets include one taper-, one plug-, and one bottoming-chamfer tap.

Tap and Die Sets

Use a single set for many sizes of internal and external threads. All sets include tap and die wrenches.

Helical Inserts with Installation Tools

Inserts come with a through-hole tap and installation tool.