UNS Taps | McMaster-Carr

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System of Measurement

Thread Size

Chamfer Type

For Use On

Stainless Steel

Thread Type

Metric Trapezoidal

Thread Direction

Right Hand and Left Hand

Flute Type

Application

Drill Bit Size

Number of Flutes

Sold As

Maximum Tapping Depth

Material

18-8 Stainless Steel

Pitch Diameter Limit

Shank Type

Drill Bit Decimal Size Equivalent

Thread Length

Finish

Aluminum Titanium Nitride (AlTiN) Coated

Titanium Carbon Nitride (TiCN) Coated

Titanium Nitride (TiN) Coated

Number of Tapping Ends

For Threading

Fastener Threads

Spark Plug Threads

Export Control Classification Number (ECCN)

REACH

RoHS

DFARS Specialty Metals

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440 Products

Taps

For Fastener Threads

Taps

Cut threads into holes in most metals and plastic so screws, bolts, and rods fit snugly

Miniature Taps

Our tiniest taps cut threads in electronics and small precision instruments

Tap Sets

A variety of taps for threading holes so screws, bolts, and rods fit snugly

Chip-Clearing Taps

Chip-Clearing Taps

Remove long, stringy chips to produce cleaner threads than standard taps

Left-Hand Thread Taps

Left-Hand Thread Taps

Create left-hand threads that prevent counter-clockwise rotating parts from loosening

Left-Hand Thread Tap Sets

Left-Hand Thread Tap Sets

A variety of taps to create a snug fit with left-hand fasteners

Long-Reach Taps

Long-Reach Taps

Thread holes that are hard to access or where obstructions make it difficult to turn a tap wrench

For Spark Plug Threads

Spark Plug Taps

Spark Plug Taps

Repair damaged or worn threads in engines so spark plugs fit securely

Other Products

Tap and Die Sets

Tap and Die Sets

Cut and repair internal and external threads in many sizes

Thread Mills

Install in a CNC machine to cut a range of internal and external threads with a single tool

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)