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    93 Products

    Taps

    Image of Product. Front orientation. Taps. Taps.
    Cut threads into holes so screws, bolts, and rods fit snugly. Our basic taps 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.
    Uncoated—The economical choice, these won't last as long as coated taps.
    Taper Chamfer—Good for both starting holes and threading through holes. These taps have the longest taper to gradually engage with the material, reducing the force needed to turn them. They can't reach the bottom of blind holes, however, so you will likely need to finish with a bottoming-chamfer tap.
    Plug Chamfer—Our go-to chamfer type, these thread both through holes and blind holes. The tapered section is shorter than a taper chamfer and longer than bottoming chamfer. As a result, they're easier to turn than bottoming taps but require more force than taper taps.
    Bottoming Chamfer—Cut all the way to the bottom of blind holes with taps that have the shortest taper. Since these require the most force to turn, they’re often used to finish holes started by taper- or plug-chamfer taps.
    Number of Flutes—Taps with fewer flutes have more space to capture chips, so you won’t have to clear them as often. However, they can be more difficult to keep straight in the hole.
    Taps Sold as Sets—Include one tap of each chamfer type.
    Taps
    Taps Sold as Sets
    Drill Bit
    Taper Chamfer
    Plug Chamfer
    Bottoming
    Chamfer
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Thread
    Type
    No. of
    Flutes
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Mfr.
    Each
    Each
    Each
    No. of
    Taps
    Each
    High-Speed Steel
     
    Uncoated
    1/4"-32
    		1"2 1/2"UNEF
    		45.6 mm
    		0.2204"SquareWidell Industries2521A4820000002521A4270000002521A44500000032521A211000000
    5/16"-32
    		1 1/8"2 23/32"UNEF
    		49/32"
    		0.2813"SquareWidell Industries2521A418000002521A428000002521A4460000032521A21200000
    3/8"-32
    		1 1/4"2 15/16"UNEF
    		411/32"
    		0.3438"SquareWidell Industries2521A419000002521A429000002521A4470000032521A21300000
    7/16"-28
    		1 7/16"3 5/32"UNEF
    		413/32"
    		0.4063"SquareWidell Industries2521A421000002521A483000002521A4480000032521A21400000
    1/2"-28
    		1 21/32"3 3/8"UNEF
    		415/32"
    		0.4688"SquareWidell Industries2521A422000002521A484000002521A4490000032521A21500000
    9/16"-24
    		1 21/32"3 19/32"UNEF
    		433/64"
    		0.5156"SquareWidell Industries2595A851000002595A852000002595A85300000————0
    5/8"-24
    		1 13/16"3 13/16"UNEF
    		637/64"
    		0.5781"SquareWidell Industries2521A423000002521A527000002521A4950000032521A21600000
    11/16"-24
    		1 13/16"4 1/32"UNEF
    		616.5 mm
    		0.6496"SquareWidell Industries2521A424000002521A491000002521A4970000032521A217000000
    3/4"-20
    		2"4 1/4"UNEF
    		645/64"
    		0.7031"SquareWidell Industries2521A425000002521A443000002521A4980000032521A218000000
    7/8"-20
    		2 7/32"4 11/16"UNEF
    		653/64"
    		0.8281"SquareWidell Industries2521A426000002521A444000002521A4560000032521A219000000
    15/16"-20
    		2 7/32"4 29/32"UNEF
    		657/64"
    		0.8906"SquareGWS2595A8670000002595A8650000002595A866000000————0
    1"-20
    		2 1/2"5 1/8"UNEF
    		661/64"
    		0.9531"SquareGWS2595A4560000002595A4570000002595A45800000032595A963000000
    1 1/4"-18
    		1 1/2"4"UNEF
    		61 3/16"
    		1.1875"SquareGWS2595A8680000002595A8620000002595A863000000————0
     

    Tap Sets

    These sets include a variety of taps for threading holes so screws, bolts, and rods fit snugly.
    High-Speed Steel—Single Thread Size Sets
    Image of Product. Taper, Plug, and Bottoming Chamfer Set. Front orientation. Taps. Tap Sets, Single Tap Thread Size.

    Taper, Plug, and Bottoming

    Chamfer Set

    The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic. These sets include one of each chamfer type: Taper for starting holes and threading through holes; plug for through holes and blind holes; and bottoming for cutting the closest to the bottom of any hole.
    Uncoated—The economical choice, these won't last as long as coated taps.
    Taper Chamfer, Plug
    Chamfer, Bottoming Chamfer
    No. of
    Pieces
    Thread
    Size
    Thread
    Type
    Container
    Type
    No. of
    Flutes
    Shank
    Type
    Mfr.
    Each
    Uncoated
    31/4"-32
    		UNEF
    		Plastic Case4SquareWidell Industries2521A211000000
    35/16"-32
    		UNEF
    		Plastic Case4SquareWidell Industries2521A21200000
    33/8"-32
    		UNEF
    		Plastic Case4SquareWidell Industries2521A21300000
    37/16"-28
    		UNEF
    		Plastic Case4SquareWidell Industries2521A21400000
    31/2"-28
    		UNEF
    		Plastic Case4SquareWidell Industries2521A21500000
    35/8"-24
    		UNEF
    		Plastic Case6SquareWidell Industries2521A21600000
    311/16"-24
    		UNEF
    		Plastic Case6SquareWidell Industries2521A217000000
    33/4"-20
    		UNEF
    		Plastic Case6SquareWidell Industries2521A218000000
    37/8"-20
    		UNEF
    		Plastic Case6SquareWidell Industries2521A219000000
    31"-20
    		UNEF
    		Plastic Case6SquareGWS2595A963000000
     

    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. All are made of solid carbide with an aluminum-titanium-nitride (AlTiN) coating, so they have high strength and excellent wear resistance, even when cutting hard and abrasive material. Use them in a CNC machine that allows helical interpolation.
    When used for internal threading, thread mills can create threads of any size equal to or greater than the minimum size listed. They leave space in the hole for chips to fall, and a broken thread mill can fall into the hole without damaging the workpiece.
    For Internal Threads (UNC, UNEF, UNF, UNJ, UNS)
    Image of ProductInUse. Front orientation. Thread Mills. For Internal Threads.
    Image of Product. Front orientation. Thread Mills. For Internal Threads.
    Thread mills cut internal UNC, UNEF, UNF, UNJ, or UNS threads, but the threads they create have a fixed pitch.
    For Min.
    Screw Size
    Threads
    per In.
    Thread
    Lg.
    Overall
    Lg.
    No. of
    Flutes
    Shank
    Size
    Mfr.
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    No. 4
    		403/16"2 1/2"21/4"Scientific Cutting Tools5277N110000000
    No. 6
    		3217/64"2 1/2"31/4"Scientific Cutting Tools5277N12000000
    No. 8
    		3217/64"2 1/2"31/4"Scientific Cutting Tools5277N13000000
    No. 10
    		2411/32"2 1/2"31/4"Scientific Cutting Tools5277N14000000
    No. 10
    		3221/64"2 1/2"31/4"Scientific Cutting Tools5277N15000000
    1/4"
    		2033/64"2 1/2"31/4"Scientific Cutting Tools5277N16000000
    5/16"
    		185/8"2 1/2"31/4"Scientific Cutting Tools5277N17000000
    5/16"
    		2441/64"2 1/2"31/4"Scientific Cutting Tools5277N24000000
    3/8"
    		1625/32"3"45/16"Scientific Cutting Tools5277N18000000
    3/8"
    		2449/64"3"45/16"Scientific Cutting Tools5277N25000000
    7/16"
    		207/8"3"43/8"Scientific Cutting Tools5277N26000000
    1/2"
    		137/8"3"43/8"Scientific Cutting Tools5277N19000000
    1/2"
    		207/8"3"43/8"Scientific Cutting Tools5277N27000000
    9/16"
    		1829/32"3"43/8"Scientific Cutting Tools5277N28000000
    3/4"
    		141 5/16"4"41/2"Scientific Cutting Tools5277N31000000
    3/4"
    		161 11/32"4"41/2"Scientific Cutting Tools5277N29000000
    1"
    		121 17/32"4"55/8"Scientific Cutting Tools5277N32000000
     
    For Internal/External Threads (UNC, UNEF, UNF, UNS) and Internal Threads (UNJ)
    Image of ProductInUse. Front orientation. Thread Mills. For External Threads, For Internal Threads.
    Image of ProductInUse. Front orientation. Thread Mills. For External Threads, For Internal Threads.
    Image of Product. Front orientation. Thread Mills. For External Threads, For Internal Threads.
    Thread mills have a single cutting point that cuts internal/external UNC, UNEF, UNF, or UNS threads in a range of different pitches on both the inside and outside of the workpiece. They can also cut internal UNJ threads in a range of different pitches.
    For Min.
    Screw Size
    Threads
    per In.
    Overall
    Lg.
    Shank
    Size
    Neck
    Dia.
    Mfr.
    Each
    Aluminum Titanium Nitride (AlTiN)-Coated Carbide
    No. 2
    		56 to 801 1/2"1/8"0.034"Scientific Cutting Tools4425N11000000
    No. 4
    		48 to 802"3/16"0.045"Scientific Cutting Tools4425N1200000
    No. 6
    		32 to 562"3/16"0.049"Scientific Cutting Tools4425N1300000
    No. 8
    		32 to 562"3/16"0.07"Scientific Cutting Tools4425N1400000
    No. 10
    		28 to 482"3/16"0.075"Scientific Cutting Tools4425N1500000
    No. 12
    		24 to 482"3/16"0.08"Scientific Cutting Tools4425N1600000
    1/4"
    		24 to 482 1/2"1/4"0.104"Scientific Cutting Tools4425N1700000
    5/16"
    		16 to 482 1/2"1/4"0.153"Scientific Cutting Tools4425N1800000
    3/8"
    		18 to 483"3/8"0.192"Scientific Cutting Tools4425N19000000
    1/2"
    		12 to 483"3/8"0.24"Scientific Cutting Tools4425N21000000
     

    Chip-Clearing Taps

    Image of ProductInUse. Front orientation. Taps. Chip-Clearing Taps, Spiral-Point Flute for Through Holes.

    Spiral-Point Flute for Through Holes

    Remove long, stringy chips to produce cleaner threads than standard taps. The flute design prevents buildup to protect the quality of the threads and avoid damage to the tap. Since you don’t need to reverse these taps to extract chips, they also create threads faster.
    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.
    Spiral-Point Flute for Through Holes—Push chips ahead of the tap and out of through holes. Also known as gun taps.
    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
    Spiral-Point Flute
    for Through Holes
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Thread
    Type
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Mfr.
    Chamfer
    Type
    No. of
    Flutes
    Each
    High-Speed Steel
     
    Uncoated
    12-32
    		15/16"2 3/8"UNEF
    		13 Ga.
    		0.185"SquareGWSPlug225705A57000000
    1/4"-32
    		1"2 1/2"UNEF
    		5.6 mm
    		0.2204"SquareGWSPlug225705A5900000
    5/16"-32
    		1 1/8"2 23/32"UNEF
    		9/32"
    		0.2813"SquareGWSPlug225705A6300000
    3/8"-32
    		1 1/4"2 15/16"UNEF
    		11/32"
    		0.3438"SquareGWSPlug325705A6400000
    1/2"-28
    		1 21/32"3 3/8"UNEF
    		15/32"
    		0.4688"SquareGWSPlug325705A6500000
     
    Titanium Nitride (TiN) Coated
    12-32
    		15/16"2 3/8"UNEF
    		13 Ga.
    		0.185"SquareGWSPlug22703A14400000
    1/4"-32
    		1"2 1/2"UNEF
    		5.6 mm
    		0.2204"SquareGWSPlug22703A14600000
    5/16"-32
    		1 1/8"2 23/32"UNEF
    		9/32"
    		0.2813"SquareGWSPlug22703A14800000
    3/8"-32
    		1 1/4"2 15/16"UNEF
    		11/32"
    		0.3438"SquareGWSPlug32703A14900000
    1/2"-28
    		1 21/32"3 3/8"UNEF
    		15/32"
    		0.4688"SquareGWSPlug32703A1500000
     
    Titanium Carbon Nitride (TiCN) Coated
    12-32
    		15/16"2 3/8"UNEF
    		13 Ga.
    		0.185"SquareGWSPlug22703A11400000
    1/4"-32
    		1"2 1/2"UNEF
    		5.6 mm
    		0.2204"SquareGWSPlug22703A11600000
    5/16"-32
    		1 1/8"2 23/32"UNEF
    		9/32"
    		0.2813"SquareGWSPlug22703A11800000
    3/8"-32
    		1 1/4"2 15/16"UNEF
    		11/32"
    		0.3438"SquareGWSPlug32703A11900000
    1/2"-28
    		1 21/32"3 3/8"UNEF
    		15/32"
    		0.4688"SquareGWSPlug32703A1200000
     

    Left-Hand Thread Taps

    Image of Product. Front orientation. Taps. Left-Hand Thread Taps.
    Create left-hand threads that prevent counter-clockwise rotating parts, such as flywheels and propellers, from loosening and spinning off. These taps 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.
    Uncoated—The economical choice, these won't last as long as coated taps.
    Plug Chamfer—Our go-to chamfer type, these thread both through holes and blind holes. The tapered section is shorter than a taper chamfer and longer than bottoming chamfer. As a result, they're easier to turn than bottoming taps but require more force than taper taps.
    Taps Sold as Sets—Include one tap of each chamfer type.
    Taps
    Taps Sold as Sets
    Drill Bit
    Plug Chamfer
    Thread
    Size
    Thread
    Lg.
    Overall
    Lg.
    Thread
    Type
    No. of
    Flutes
    Size
    Decimal Size
    Equiv.
    Shank
    Type
    Mfr.
    Each
    No. of
    Taps
    Each
    High-Speed Steel
     
    Uncoated
    1"-20
    		2 1/2"5 1/8"UNEF
    		661/64"
    		0.9531"SquareWidell Industries2584A925000000032584A9350000000
     
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