Inch

Thread

Drill Bit

Through-Hole

Threading

Closed-End

Hole Threading

Size Lg. Overall

Lg. Size Decimal Size

Equivalent No. of

Flutes Thread

Type Pitch

Dia. Limit Each Each

Black Oxide Cobalt Steel

2-56 7/16" 1 3/4" 51 ga. 0.067" 2 UNC H2 25595A14 $42.36 ______ __

2-56 7/16" 1 3/4" 51 ga. 0.067" 3 UNC H2 ______ __ 25595A18 $64.12

4-40 9/16" 1 7/8" 43 ga. 0.089" 3 UNC H2 ______ __ 2626A12 28.55

4-40 9/16" 1.88" 43 ga. 0.089" 2 UNC H3 25595A12 22.58 ______ __

4-48 9/16" 1 7/8" 42 ga. 0.0935" 2 UNF H2 25595A73 23.04 ______ __

4-48 9/16" 1 7/8" 42 ga. 0.0935" 3 UNF H2 ______ __ 2626A13 28.55

5-40 5/8" 1 15/16" 38 ga. 0.1015" 3 UNC H2 ______ __ 2626A14 28.55

5-40 5/8" 1.95" 38 ga. 0.1015" 3 UNC H2 ______ __ 25595A17 30.78

5-40 3/8" 1 15/16" 38 ga. 0.1015" 3 UNC H2 25595A74 23.04 ______ __

6-32 3/8" 2" 36 ga. 0.1065" 3 UNC H3 25595A75 19.28 2626A15 25.93

6-40 13/32" 2" 33 ga. 0.113" 3 UNF H3 ______ __ 2626A99 55.45

6-40 3/8" 2" 33 ga. 0.113" 3 UNF H2 25595A76 19.28 ______ __

8-32 5/16" 2 1/8" 29 ga. 0.136" 3 UNC H3 25595A77 19.28 2626A17 25.49

8-36 3/8" 2 1/8" 29 ga. 0.136" 3 UNF H2 25595A62 27.69 ______ __

10-24 15/32" 2 3/8" 25 ga. 0.1495" 3 UNC H3 25595A78 19.28 2626A19 25.49

10-32 15/32" 2 3/8" 21 ga. 0.159" 3 UNF H3 25595A79 19.28 2626A22 25.49

12-24 1/2" 2 3/8" 16 ga. 0.177" 3 UNC H3 25595A63 49.94 ______ __

12-24 7/16" 2 3/8" 16 ga. 0.177" 3 UNC H3 ______ __ 2626A97 75.04

12-28 7/16" 2 3/8" 15 ga. 0.18" 3 UNF H3 ______ __ 2626A98 90.13

1/4"-20 7/16" 2 1/2" 7 ga. 0.201" 3 UNC H3 25595A81 22.92 2626A25 28.55

1/4"-28 7/16" 2 1/2" 3 ga. 0.213" 3 UNF H3 25595A82 22.92 2626A28 28.55

5/16"-18 1/2" 2 23/32" F 0.257" 3 UNC H3 25595A83 25.38 2626A32 31.36

5/16"-24 1/2" 2 23/32" I 0.272" 3 UNF H3 25595A84 25.38 2626A35 31.36

3/8"-16 19/32" 2 15/16" 5/16" 0.3125" 3 UNC H3 25595A85 29.14 2626A38 36.13

3/8"-24 19/32" 2 15/16" Q 0.332" 3 UNF H3 25595A86 29.14 2626A42 36.13

7/16"-14 23/32" 3 5/32" U 0.368" 3 UNC H3 25595A87 39.48 2626A45 50.71

7/16"-20 23/32" 3 5/32" 25/64" 0.3906" 3 UNF H3 25595A88 39.48 2626A46 50.71

1/2"-13 25/32" 3 3/8" 27/64" 0.4219" 3 UNC H3 25595A89 46.82 2626A48 55.80

1/2"-20 25/32" 3 3/8" 29/64" 0.4531" 3 UNF H3 25595A91 46.82 2626A52 55.80

9/16"-12 27/32" 3 19/32" 31/64" 0.4844" 3 UNC H3 25595A65 61.31 ______ __

9/16"-18 27/32" 3 19/32" 33/64" 0.5156" 3 UNF H3 25595A66 78.81 ______ __

5/8"-11 29/32" 3 13/16" 17/32" 0.5313" 3 UNC H3 25595A92 107.84 2626A55 126.36

5/8"-18 1 5/16" 3 13/16" 37/64" 0.5781" 3 UNF H3 ______ __ 2626A57 126.36

5/8"-18 29/32" 3 13/16" 37/64" 0.5781" 3 UNF H3 25595A93 107.84 ______ __

3/4"-10 1 19/32" 4 1/4" 21/32" 0.6563" 3 UNC H3 ______ __ 2626A58 162.00

3/4"-10 1" 4 1/4" 21/32" 0.6563" 3 UNC H3 25595A94 139.00 ______ __

3/4"-16 1" 4 1/4" 11/16" 0.6875" 3 UNF H3 25595A95 139.00 2626A59 162.00

Metric

Thread

Drill Bit

Through-Hole

Threading

Closed-End

Hole Threading

Size Pitch,

mm Lg. Overall

Lg. Size Decimal Size

Equivalent No. of

Flutes Pitch

Dia. Limit Each Each

Black Oxide Cobalt Steel

M3 0.5 5/8" 1 15/16" 2.5 mm 0.0984" 3 D3 2676A11 $28.88 8327A41 $28.52

M3.5 0.6 3/8" 2" 2.9 mm 0.1142" 3 D4 2676A12 30.51 8327A42 25.72

M4 0.7 5/16" 2 1/8" 3.3 mm 0.1299" 3 D4 2676A13 30.51 8327A43 25.72

M5 0.8 15/32" 2 3/8" 4.2 mm 0.1653" 3 D4 2676A14 30.51 8327A44 25.72

M6 1 15/32" 2 1/2" 5 mm 0.1968" 3 D5 2676A15 32.70 8327A45 27.81

M7 1 17/32" 2 23/32" 6 mm 0.2362" 3 D5 2676A16 34.95 8327A46 31.34

M8 1 15/32" 2 23/32" 6.9 mm 0.2716" 3 D5 2676A17 34.95 8327A47 31.34

M8 1.25 15/32" 2 23/32" 6.7 mm 0.2637" 3 D5 2676A18 34.95 8327A48 37.53

M10 1.25 17/32" 2 15/16" 8.7 mm 0.3425" 3 D5 2676A19 40.79 8327A49 37.57

M10 1.5 17/32" 2 15/16" 8.5 mm 0.3346" 3 D6 2676A21 40.79 8327A51 37.57

M12 1.25 25/32" 3 3/8" 10.8 mm 0.4251" 3 D5 2676A22 58.00 8327A52 51.83

M12 1.75 25/32" 3 3/8" 10.2 mm 0.4015" 3 D6 2676A23 58.00 8327A53 51.83

M14 1.5 27/32" 3 19/32" 12.5 mm 0.4921" 3 D6 2676A24 90.74 ______ __

M14 2 27/32" 3 19/32" 12 mm 0.4724" 3 D7 2676A25 90.74 ______ __

M16 1.5 29/32" 3 13/16" 14.5 mm 0.5709" 3 D6 2676A26 199.86 ______ __

M16 2 29/32" 3 13/16" 14 mm 0.5512" 3 D7 2676A27 105.35 ______ __

M2.5 0.45 1/2" 1.81" 5/64" 0.0781" 2 D3 25595A11 36.02 ______ __

M2.5 0.45 1/2" 1.81" 5/64" 0.0781" 3 D3 ______ __ 25595A15 57.24