Open-End Hole Taps | McMaster-Carr

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Internal Thread Cutting

General Purpose Taps

Cut threads into most metal and plastic.

Left-Hand General Purpose Taps

Tap threads for left-hand threaded fasteners.

Long-Reach General Purpose Taps

Use the extra-long shank to thread deep and hard-to-reach holes.

Oversize General Purpose Taps

Sized to cut oversized threads, these tools are often used to tap holes where the threads will shrink due to heat treatment or plating.

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.

Carbide Taps

Use these taps on hard and abrasive material, such as heat-treated metal, nickel, and fiberglass.

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.

Left-Hand Chip-Clearing Taps for Through Holes

These taps cut left-hand threads while keeping chips clear.

Oversize Chip-Clearing Taps for Through Holes

Create oversized threads while keeping chips clear. These taps are sized for use in holes where the threads will shrink due to heat treatment or plating.

Long-Reach Chip-Clearing Taps for Through Holes

Clear chips while tapping deep and hard-to-reach holes. These taps have an extra-long shank for extended reach.

Hex Shank Combination Drill
Bits/Taps for Drills and Screwdrivers

With a drill bit point to drive into the workpiece, these taps can drill and tap holes in a single step. A 1/4" hex shank connects them directly to tools such as drills and power screwdrivers.

Hex Shank Taps for Drills and Screwdrivers

Insert these taps directly into drills, power screwdrivers, and other tools that accept a 1/4" hex shank.

Combination Drill Bit/Taps

Drill holes and cut threads without switching tools.

Chip-Free Forming Taps

Also known as cold-forming and fluteless taps, these press threads into material without cutting it, so no chips are created.

Taps with Two Threading Ends

With a taper chamfer and bottoming chamfer at opposite ends, these taps start threads easily and are good for threading close to the bottom of closed-end holes.

Taps for Hardened Steel and Iron

Tap threads into hardened steel and iron. These cobalt steel taps have straight flutes for high durability.

Taps for Steel and Stainless Steel

These taps are made of cobalt steel for higher strength and wear resistance than standard taps. Their flutes are designed to keep chips clear, so they don't need to be reversed to prevent buildup.

Taps for Nickel

To tap nickel and other hard material, these cobalt steel taps have high cutting strength. Their flutes are designed to keep chips clear, so they don't need to be reversed to prevent buildup.

Taps for Aluminum, Brass, and Plastic

Coated with chromium carbide or titanium carbonitride (TiCN), these cobalt steel taps cut smoothly through soft material to produce accurate threads.

Taps for Titanium

A high helix angle provides the cutting strength needed to tap threads in titanium. These cobalt steel taps have an open flute design that keeps chips clear, so they don't need to be reversed to prevent buildup.

Pipe and Conduit Thread Taps

Create threads sized for pipe and conduit.

Long-Reach Pipe and Conduit Thread Taps

With an extra-long shank, these taps have extended reach for tapping deep and hard-to-reach areas in pipe and conduit.

Left-Hand Pipe and Conduit Thread Taps

Tap left-hand threads for pipe and conduit.

Economy Carbon Steel Pipe and Conduit Thread Taps

Use these carbon steel taps for thread repair and occasional tapping of pipe and conduit. They can tap threads into most metal and plastic, but they have a shorter tool life than standard taps.

Pipe and Conduit Thread Taps for Shallow Holes

Also known as short-projection taps, these have fewer tapered threads at the tip than standard pipe taps, so you don't have to drive them as deep to produce full threads.

Chip-Clearing Pipe and Conduit Thread Taps

Also known as interrupted-thread taps, these have extra space between the cutting threads, so large chips fall without packing and high amounts of lubricant can flow between the tap and the workpiece.

Combination Drill Bit/Pipe and Conduit Thread Taps

Drill and thread holes for pipe and conduit without switching tools.

Pipe and Conduit Thread Taps
with Two Threading Ends

With a taper chamfer on one threading end and a bottoming chamfer on the other, these pipe and conduit taps can start threads easily, and they are able to thread close to the bottom of closed-end holes.

Pipe and Conduit Thread Taps
for Stainless Steel and Plastic

The spiral flutes on these pipe and conduit taps keep chips clear by drawing them back out of the hole, so there's no need to reverse the tap while cutting threads.

Pipe and Conduit Thread Taps
for Aluminum, Copper, and Brass

The cutting teeth are shaped to cut smooth threads in soft pipe and conduit material.

Pipe and Conduit Thread Taps for Steel

Made of cobalt steel, these taps are for use on steel pipe and conduit.

European Conduit Thread Taps

Cut threads in PG thread sizes commonly used for European conduit.

Taps for Helical Inserts

Add threads to holes in preparation for installing helical inserts.

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.

Acme and Metric Trapezoidal Thread Taps

Form general purpose Acme threads.

JIS Thread Taps

Produce metric threads that meet Japanese Industrial Standards.

Spark Plug Thread Taps

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

Coil Thread Taps

The coil-style threads produced by these taps are shallower and more widely spaced than standard thread sizes. Use them for quick threading action with compatible fasteners.

Compressed Gas Thread Taps

Also known as National Gas Outlet (NGO) taps, these tap threads in sizes used for compressed gas cylinders and valves.

Garden Hose Thread Taps

Tap the unique size needed for garden hose thread (GHT) connections.

Spark Plug Thread Repair Tools

Attach these tools to a socket wrench to restore rusted and damaged spark plug threads in two common sizes.

Internal Threading Sets

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.

Chip-Clearing Tap Sets for Through-Holes

Sets include multiple tap sizes for threading different hole diameters.

Hex-Shank Tap Sets for Drills and Screwdrivers

Multiple tap sizes allow tapping a range of hole diameters. Connect these taps directly to drills, power screwdrivers, and other tools that accept a 1/4" hex shank.

Pipe and Conduit Tap Sets

Create pipe and conduit threads in a range of hole diameters.

Tap and Drill Bit Sets

Drill and tap a variety of hole sizes. These taps and drill bits are for use on metal and plastic.

Hex-Shank Combination Drill Bit/Tap
Sets for Drills and Screwdrivers

Drill and tap holes in a range of diameters. With a drill bit point to drive into the workpiece, these tools can drill and tap holes in a single step. Connect them directly to drills, power screwdrivers, and other tools that accept a 1/4" hex shank.

Chip-Clearing Tap and Drill Bit Sets for Through-Holes

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

Hex-Shank Tap and Drill Bit
Sets for Drills and Screwdrivers

All taps and drill bits have a hex shank for direct connection to tools such as drills and power screwdrivers.

Tap and Die Sets

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

Tap, Die, and Drill Bit Sets

Cut and repair threads and drill holes in many different sizes. Tap and die wrenches are included.

Internal Thread Cutting

General Purpose Taps

Left-Hand General Purpose Taps

Long-Reach General Purpose Taps

Oversize General Purpose Taps

Economy Carbon Steel Taps

Carbide Taps

Chip-Clearing Taps for Through Holes

Left-Hand Chip-Clearing Taps for Through Holes

Oversize Chip-Clearing Taps for Through Holes

Long-Reach Chip-Clearing Taps for Through Holes

Hex Shank Combination DrillBits/Taps for Drills and Screwdrivers

Hex Shank Taps for Drills and Screwdrivers

Combination Drill Bit/Taps

Chip-Free Forming Taps

Taps with Two Threading Ends

Taps for Hardened Steel and Iron

Taps for Steel and Stainless Steel

Taps for Nickel

Taps for Aluminum, Brass, and Plastic

Taps for Titanium

Pipe and Conduit Thread Taps

Long-Reach Pipe and Conduit Thread Taps

Left-Hand Pipe and Conduit Thread Taps

Economy Carbon Steel Pipe and Conduit Thread Taps

Pipe and Conduit Thread Taps for Shallow Holes

Chip-Clearing Pipe and Conduit Thread Taps

Combination Drill Bit/Pipe and Conduit Thread Taps

Pipe and Conduit Thread Tapswith Two Threading Ends

Pipe and Conduit Thread Tapsfor Stainless Steel and Plastic

Pipe and Conduit Thread Tapsfor Aluminum, Copper, and Brass

Pipe and Conduit Thread Taps for Steel

European Conduit Thread Taps

Taps for Helical Inserts

Thread Mills

Acme and Metric Trapezoidal Thread Taps

JIS Thread Taps

Spark Plug Thread Taps

Coil Thread Taps

Compressed Gas Thread Taps

Garden Hose Thread Taps

Spark Plug Thread Repair Tools

Spark Plug Thread Repair Tools

Internal Threading Sets

Tap Sets

Left-Hand Tap Sets

Chip-Clearing Tap Sets for Through-Holes

Hex-Shank Tap Sets for Drills and Screwdrivers

Pipe and Conduit Tap Sets

Tap and Drill Bit Sets

Hex-Shank Combination Drill Bit/TapSets for Drills and Screwdrivers

Chip-Clearing Tap and Drill Bit Sets for Through-Holes

Hex-Shank Tap and Drill BitSets for Drills and Screwdrivers

Tap and Die Sets

Tap and Die Sets

Tap, Die, and Drill Bit Sets

Hex Shank Combination Drill
Bits/Taps for Drills and Screwdrivers

Pipe and Conduit Thread Taps
with Two Threading Ends

Pipe and Conduit Thread Taps
for Stainless Steel and Plastic

Pipe and Conduit Thread Taps
for Aluminum, Copper, and Brass

Hex-Shank Combination Drill Bit/Tap
Sets for Drills and Screwdrivers

Hex-Shank Tap and Drill Bit
Sets for Drills and Screwdrivers