McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    23 Products

    Pipe and Conduit Taps

    Add internal threads to pipe and conduit or components such as manifolds. They have straight flutes that are good for most jobs.
    NPT ThreadAbout NPT Thread
    Image of Product. Front orientation. Taps. Pipe and Conduit Taps.
    High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.
    Cobalt Steel—These taps resist higher temperatures and and last twice as long as high-speed steel taps. They thread hard materials such as iron and hardened steel without damaging their cutting edges.
    Carbon Steel—The economical choice for occasional hand tapping. These work on most metals and plastic but will dull more quickly than other taps.
    Uncoated—The economical choice, these won't last as long as coated taps.
    Titanium Nitride (TiN) Coated—Run at higher speeds and last twice as long as uncoated taps.
    Drill Bit
    Plug Chamfer
    Pipe
    Size
    Thread
    Lg.
    Overall
    Lg.
    No. of
    Flutes
    Threads
    per In.
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Each
    High-Speed Steel
     
    Uncoated
    1/4
    		1 1/16"2 7/16"4187/16"
    		0.4375"Square2525A173000000
    1/4
    		1 1/16"3 1/2"4187/16"
    		0.4375"Square2538A4200000
     
    Titanium Nitride (TiN) Coated
    1/4
    		1 1/16"2 7/16"4187/16"
    		0.4375"Square2652A4300000
     
    Cobalt Steel
     
    Uncoated
    1/4
    		1 1/16"2 7/16"4187/16"
    		0.4375"Square2662A37100000
     
    Carbon Steel
     
    Uncoated
    1/4
    		1 1/16"2 7/16"4187/16"
    		0.4375"Square2525A11300000
     

    Tap and Die Sets

    Image of Product. Front orientation. Tap and Die Sets.
    Use a single set for many sizes of internal and external threads. The taps and dies are for use on most metal and plastic.
    Carbon Steel—Carbon steel taps are for thread repair and occasional tapping.
    High-Speed Steel—High-speed steel taps and dies last longer than carbon steel when used on similar material.
    Plug Chamfer—Plug-chamfer taps are a versatile choice for most tapping applications. With 3-5 chamfered cutting threads, they require moderate torque and are often used for start-to-finish tapping of through holes and closed-end holes. However, they do not start threads as easily as taper-chamfer taps. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.
    Taper Chamfer—Taper-chamfer taps have 7-10 chamfered threads at the tip for cutting into the workpiece. They require less torque than other chamfer types, making them a good choice for starting threads and tapping through holes. However, a longer taper means that they cannot thread as close to the bottom of closed-end holes.
    Hex—Hex-shaped dies are for thread repair and can be used with conventional wrenches.
    No. of
    Pieces
    Tap Sizes Included
    Tap Chamfer
    Type
    Die
    Shape
    Die Sizes Included
    Wd.
    Container
    Type
    Includes
    Each
    Carbon Steel Taps and Dies
     
    Right-Hand Thread
    121/8, 1/4, 3/8, 1/2, 3/4, 1TaperHex1/8"-27, 1/4"-18, 3/8"-18, 1/2"-14, 3/4"-14, 1"-11 1/21 1/16", 1 1/4", 1 7/16", 1 5/8", 2", 2 3/8"Plastic Case—2549A760000000
    536-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 1/4"-18Plug, TaperHex6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-18, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-161", 1 7/16"Plastic CaseDie Wrench (2), Screwdriver, Tap Wrench (3), Thread Gauge25955A6000000
    654-40, 6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 7/8"-9, 7/8"-14, 1"-8, 1"-14, 1/4"-18Plug, TaperHex4-40, 6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-18, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 7/8"-14, 7/8"-9, 1"-8, 1"-145/8", 1", 1 7/16", 1 13/16"Plastic CaseDie Wrench (4), Tap Wrench (4), Thread Gauge26075A71000000
     
    High-Speed Steel Taps and Dies
     
    Right-Hand Thread
    586-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 1/4"-18PlugHex6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-18, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-161", 1 7/16"Plastic CaseDie Wrench (2), Extractor (5), Screwdriver, Tap Wrench (3), Thread Gauge26055A74000000
     
    High-Speed Steel Taps and Carbon Steel Dies
     
    Right-Hand Thread
    121/8, 1/4, 3/8, 1/2, 3/4, 1TaperHex1/8"-27, 1/4"-18, 3/8"-18, 1/2"-13, 3/4"-14, 1"-11 1/225/32", 1 1/16", 1 1/4", 1 5/8", 1 13/16", 2 3/16"Plastic Case—2549A78000000
     

    Chip-Clearing Pipe and Conduit Taps for Steel and Stainless Steel

    Made of a high-vanadium alloy, these taps are harder and more wear-resistant than other high-speed steel taps. The widely spaced flutes prevent buildup that can ruin threads and keep pipe and conduit from making strong connections. Also known as interrupted-thread taps.
    NPT ThreadAbout NPT Thread
    Image of Product. Front orientation. Taps. Chip-Clearing Pipe and Conduit Taps for Steel and Stainless Steel.
    High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.
    Uncoated—The economical choice, these won't last as long as coated taps.
    Titanium Nitride (TiN) Coated—Run at higher speeds and last twice as long as uncoated taps.
    Titanium Carbon Nitride (TiCN) Coated—Resist heat, chipping, and wear for three times the life of uncoated taps.
    Drill Bit
    Plug Chamfer
    Bottoming
    Chamfer
    Pipe
    Size
    Thread
    Lg.
    Overall
    Lg.
    No. of
    Flutes
    Threads
    per In.
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Each
    Each
    High-Speed Steel
     
    Uncoated
    1/4
    		1 3/32"2 7/16"3187/16"
    		0.438"Square———02663A66000000
     
    Cobalt Steel
     
    Titanium Nitride (TiN) Coated
    1/4
    		1 1/16"2 7/16"4187/16"
    		0.4375"Square2663A43000000———0
     
    Titanium Carbon Nitride (TiCN) Coated
    1/4
    		1 1/16"2 7/16"3187/16"
    		0.4375"Square2662A22700000———0
     

    Pipe and Conduit Tap Sets

    Image of Product. Front orientation. Taps. Pipe and Conduit Tap Sets.
    A range of sizes for adding internal threads to pipe and conduit. These taps can also be used to thread components like manifolds. They have straight flutes that are good for most jobs.
    High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.
    Carbon Steel—The economical choice for occasional hand tapping. These work on most metals and plastic but will dull more quickly than other taps.
    No. of
    Pieces
    Pipe Size
    Thread
    Type
    Chamfer
    Type
    No. of
    Flutes
    Container
    Type
    Shank
    Type
    Each
    High-Speed Steel
    61/8, 1/4, 3/8, 1/2, 3/4, 1
    		NPT
    		Plug4, 5Fabric PouchSquare2765A430000000
    61/8, 1/4, 3/8, 1/2, 3/4, 1
    		NPT
    		Plug4, 5Wood CaseSquare2765A44000000
     
    Carbon Steel
    61/8, 1/4, 3/8, 1/2, 3/4, 1
    		NPT
    		Plug4, 5Fabric PouchSquare2765A42000000
     

    Helical Insert Taps

    Image of Product. Front orientation. Taps. Helical Insert Taps.
    Match the size of helical inserts so they fit tightly when installed in the hole.
    High-Speed Steel—These taps resist heat and wear to stay sharp.
    Plug Chamfer—Our go-to chamfer type. With a longer taper than a bottoming chamfer, they are easier to turn but won't thread as close the bottom of a hole.
    Drill Bit
    Plug Chamfer
    For Insert
    Size
    Thread
    Lg.
    Overall
    Lg.
    For Insert
    Thread Type
    No. of
    Flutes
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Each
    High-Speed Steel
     
    Uncoated
    1/4
    		1 1/16"2 9/16"NPT
    		433/64"
    		0.5156"Square91711A2520000000
     

    Chip-Clearing Pipe and Conduit Taps for Aluminum, Brass, and Bronze

    Slightly hooked cutting teeth grab and remove long chips from the hole. These taps prevent buildup from soft metals that can ruin threads and keep pipe and conduit from making strong connections.
    NPT ThreadAbout NPT Thread
    Image of Product. Front orientation. Taps. Chip-Clearing Pipe and Conduit Taps for Aluminum, Brass, and Bronze.
    High-Speed Steel—These taps resist heat and wear to stay sharp.
    Uncoated—The economical choice, these won't last as long as coated taps.
    Drill Bit
    Plug Chamfer
    Pipe
    Size
    Thread
    Lg.
    Overall
    Lg.
    No. of
    Flutes
    Threads
    per In.
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Each
    High-Speed Steel
     
    Uncoated
    1/4
    		1 1/16"2 7/16"4187/16"
    		0.4375"Square2654A12000000
     

    Chip-Clearing Pipe and Conduit Taps

    With widely spaced flutes, chips fall away from the tap and plenty of lubricant flows to the workpiece. These taps prevent buildup that can ruin threads and keep pipe and conduit from making strong connections. Also known as interrupted-thread taps.
    NPT ThreadAbout NPT Thread
    Image of Product. Front orientation. Taps. Chip-Clearing Pipe and Conduit Taps.
    High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.
    Uncoated—The economical choice, these won't last as long as coated taps.
    Drill Bit
    Plug Chamfer
    Pipe
    Size
    Thread
    Lg.
    Overall
    Lg.
    No. of
    Flutes
    Threads
    per In.
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Each
    High-Speed Steel
     
    Uncoated
    1/4
    		1 1/16"2 7/16"5187/16"
    		0.4375"Square2525A192000000
     

    Long-Reach Pipe and Conduit Taps

    Reach into the deep recesses of your system and bypass obstructions to thread pipe and conduit. These are twice as long as standard taps but with the same shank diameter, so you don’t need a different holder. They have straight flutes that are good for most jobs.
    NPT ThreadAbout NPT Thread
    Image of Product. Front orientation. Taps. Long-Reach Pipe and Conduit Taps.
    High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.
    Drill Bit
    Plug Chamfer
    Pipe
    Size
    Thread
    Lg.
    Overall
    Lg.
    No. of
    Flutes
    Threads
    per In.
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Each
    High-Speed Steel
     
    Uncoated
    1/4
    		1 1/16"6"4187/16"
    		0.4375"Square2538A32000000
     

    Air-Powered Tap Wrenches

    Image of Product. Front orientation. Tap Wrenches. Air-Powered Tap Wrenches.
    Powered by compressed air, these tap wrenches thread holes faster and with less effort than manual tap wrenches. They’re often used in place of manual tap wrenches when threading many holes and hard materials. Compared to drill presses and CNC machines, which are stationary, these wrenches are portable so you can take them to the part that needs to be threaded. To remove chips from your hole, press the reverse button to rotate the tap counterclockwise. Switch different taps in and out of the chuck when your tap is worn down or you need a new size. Use with machine tool taps and tapping lubricants for best results.
    Air Inlet
    For Tap Size
    For Square
    Shank Size
    Max. Torque,
    in·lbf
    No. of
    Speeds
    Max. No-Load Rotational
    Speed, rpm
    Recommended Operating
    Air Pressure, psi
    Average Air Consumption
    @ Pressure
    Pipe
    Size
    Thread
    Type
    Gender
    For Air
    Hose ID
    Exhaust
    Location
    Lg.
    Wt.,
    lb.
    Each
    No. 10, No. 12, 1/4", 5/16", M5, M6, M7, M8
    		0.191" to 0.313"40013009030 ft³/min @ 90 psi1/4
    		NPT
    		Female3/8"Handle7 1/4"2.93526N11000000000
    1/4", 5/16", 3/8", 7/16", 1/2", M6, M7, M8, M9, M10, M11, M12, M130.25" to 0.5"40013009030 ft³/min @ 90 psi1/4
    		NPT
    		Female3/8"Handle7 1/4"2.93526N1200000000
     

    Helical Threaded Inserts for Pipe Threads with Installation Tools

    Image of Product. Front orientation. Threaded Inserts. Helical Threaded Inserts for Pipe Threads with Installation Tools.
    Fix stripped pipe threads fast—these inserts come with drill bits, through-hole taps, and installation tools. Also known as Heli-Coil inserts.
    Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.
    18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.
    Pipe
    Size
    Installed
    Lg.
    Drill Bit
    Size
    For Max.
    Hole Dia.
    No. of Inserts
    Included
    Includes
    Each
    Pronged NPT Thread
     
    18-8 Stainless Steel
    1/4
    		0.394"33/64"
    		0.516"12Drill Bit
    Installation Tool
    Through-Hole Tap    		91733A4220000000
     
    back to top