Tap Sizes

Included Thread

Type Thread

Lg. Overall

Lg. Size Decimal Size

Equivalent No. of

Flutes Pitch

Dia. Limit Each

Uncoated High-Speed Steel

8-32 UNC 3/4" 2 1/8" 29 ga. 0.136" 4 H3 2584A314 $21.30

10-32 UNF 7/8" 2 3/8" 21 ga. 0.159" 4 H3 2584A318 21.65

1/4"-20 UNC 1" 2 1/2" 7 ga. 0.201" 4 H3 2584A321 19.60

1/4"-28 UNF 1" 2 1/2" 3 ga. 0.213" 4 H3 2584A323 32.13

1/4"-40 UNS 1" 2 1/2" 2 ga. 0.221" 4 H3 2584A927 197.40

5/16"-18 UNC 1 1/8" 2 23/32" F 0.257" 4 H3 2584A325 26.30

5/16"-20 UNS 1 1/8" 2 23/32" G 0.261" 4 H3 2584A928 200.20

5/16"-24 UNF 1 1/8" 2 23/32" I 0.272" 4 H3 2584A327 26.30

3/8"-16 UNC 1 1/4" 2 15/16" 5/16" 0.3125" 4 H3 2584A329 34.10

3/8"-24 UNF 1 1/4" 2 15/16" Q 0.332" 4 H3 2584A332 34.10

7/16"-14 UNC 1 7/16" 3 5/32" U 0.368" 4 H3 2584A651 40.07

7/16"-20 UNF 1 7/16" 3 5/32" 25/64" 0.3906" 4 H3 2584A653 49.44

1/2"-13 UNC 1 21/32" 3 3/8" 27/64" 0.4219" 4 H3 2584A338 57.73

1/2"-20 UNF 1 21/32" 3 3/8" 29/64" 0.4531" 4 H3 2584A341 57.73

9/16"-20 UNS 1 21/32" 3 19/32" 33/64" 0.5156" 4 H3 2584A929 240.96

5/8"-11 UNC 1 13/16" 3 13/16" 17/32" 0.5313" 4 H3 2584A657 111.15

5/8"-18 UNF 1 13/16" 3 13/16" 37/64" 0.5781" 4 H3 2584A646 111.15

11/16"-16 UNF 1 13/16" 4 1/32" 5/8" 0.625" 4 H3 2584A931 120.40

11/16"-18 UNS 1 13/16" 4 1/32" 16 mm 0.6299" 6 H3 2584A932 261.80

3/4"-10 UNC 2" 4 1/4" 21/32" 0.6563" 4 H3 2584A659 145.92

3/4"-16 UNF 2" 4 1/4" 11/16" 0.6875" 4 H3 2584A658 145.92

7/8"-18 UNS 2 7/32" 4 11/16" 53/64" 0.8281" 6 H3 2584A933 327.60

1"-8 UNC 2 1/2" 5 1/8" 7/8" 0.875" 4 H4 2584A352 192.56

1"-12 UNF 2 1/2" 5 1/8" 59/64" 0.9219" 4 H4 2584A354 192.56

1"-14 UNS 2 1/2" 5 1/8" 23.6 mm 0.9291" 4 H4 2584A556 192.56

1"-16 UNS 2 1/2" 5 1/8" 15/16" 0.9375" 6 H3 2584A934 372.40

1"-20 UNS 2 1/2" 5 1/8" 61/64" 0.9531" 6 H3 2584A935 372.40

1 1/8"-7 UNC 2 9/16" 5 7/16" 63/64" 0.9844" 4 H4 2584A558 315.01

1 1/8"-12 UNF 2 9/16" 5 7/16" 1 1/32" 1.0313" 4 H4 2584A561 315.01

1 1/4"-7 UNC 2 9/16" 5 3/4" 1 3/32" 1.0938" 4 H4 2584A563 382.21

1 1/4"-12 UNF 2 9/16" 5 3/4" 1 11/64" 1.1719" 4 H4 2584A565 382.21

1 1/2"-6 UNC 3" 6 3/8" 1 11/32" 1.3438" 4 H4 2584A569 504.01

1 1/2"-12 UNF 3" 6 3/8" 1 27/64" 1.4219" 6 H4 2584A572 504.01

Metric

Drill Bit

Tap Sizes

Included Thread

Pitch, mm Thread

Lg. Overall

Lg. Size Decimal Size

Equivalent No. of

Flutes Pitch

Dia. Limit Each

Uncoated High-Speed Steel

M4 0.7 3/4" 2 1/8" 3.3 mm 0.1299" 4 D4 26565A72 $18.39

M5 0.8 15/16" 2 3/8" 4.2 mm 0.1653" 4 D4 26565A74 18.39

M6 1 1" 2 1/2" 5 mm 0.1968" 4 D5 26565A75 21.92

M7 1 1 1/8" 2 23/32" 6 mm 0.2362" 4 D5 26565A76 25.35

M8 1 1 1/8" 2 23/32" 6.9 mm 0.2716" 4 D5 26565A761 25.70

M8 1.25 1 1/8" 2 23/32" 6.7 mm 0.2637" 4 D5 26565A77 26.46

M10 1 1 1/4" 2 15/16" 8.9 mm 0.3503" 4 D5 26565A772 168.37

M10 1.25 1 1/4" 2 15/16" 8.7 mm 0.3425" 4 D5 26565A773 47.71

M10 1.5 1 1/4" 2 15/16" 8.5 mm 0.3346" 4 D6 26565A78 49.14

M12 1.25 1 21/32" 3 3/8" 10.8 mm 0.4251" 4 D5 26565A782 55.03

M12 1.5 1 21/32" 3 3/8" 10.5 mm 0.4134" 4 D6 26565A783 189.00

M12 1.75 1 21/32" 3 3/8" 10.2 mm 0.4015" 4 D6 26565A79 54.57

M14 1 1 21/32" 3 19/32" 13 mm 0.5118" 4 D5 26565A791 189.00

M14 1.5 1 21/32" 3 19/32" 12.5 mm 0.4921" 4 D6 26565A792 84.40

M14 2 1 21/32" 3 19/32" 12 mm 0.4724" 4 D7 26565A81 90.83

M16 1 1 13/16" 3 13/16" 15 mm 0.5905" 4 D5 26565A811 206.17

M16 1.5 1 13/16" 3 13/16" 14.5 mm 0.5709" 4 D6 26565A812 80.73

M16 2 1 13/16" 3 13/16" 14 mm 0.5512" 4 D7 26565A82 95.07

M18 1.5 1 13/16" 4 1/32" 16.5 mm 0.6496" 4 D6 26565A821 117.42

M18 2.5 1 13/16" 4 1/32" 15.5 mm 0.6102" 4 D7 26565A83 116.72

M20 1.5 2" 4 15/32" 47/64" 0.7344" 4 D6 26565A831 146.80

M20 2 2" 4 15/32" 18 mm 0.7087" 4 D7 26565A832 254.29

M20 2.5 2" 4 15/32" 17.5 mm 0.689" 4 D7 26565A84 145.72

M24 3 2 7/32" 4 15/16" 21 mm 0.8268" 4 D8 26565A85 186.38