Thread

Drill Bit

Plug Chamfer

Size Lg. Overall

Lg. Size Decimal Size

Equivalent Point

Angle Flute

Type Thread

Type Pitch

Dia. Limit Each

Uncoated High-Speed Steel

4-40 3/8" 1 7/8" 43 ga. 0.089" 110° Spiral UNC H2 2748A14 $20.41

4-48 3/8" 1 7/8" 42 ga. 0.0935" 110° Spiral UNF H2 2748A15 22.07

5-40 13/32" 1 15/16" 38 ga. 0.1015" 110° Spiral UNC H2 2748A16 20.41

6-32 7/16" 2" 36 ga. 0.1065" 110° Spiral UNC H3 2748A22 19.92

6-40 7/16" 2" 33 ga. 0.113" 110° Spiral UNF H3 2748A23 21.04

8-32 1/2" 2 1/8" 29 ga. 0.136" 110° Spiral UNC H3 2748A24 19.92

8-36 1/2" 2 1/8" 29 ga. 0.136" 110° Spiral UNF H3 2748A25 22.07

10-24 5/8" 2 3/8" 25 ga. 0.1495" 110° Spiral UNC H3 2748A28 19.92

10-32 5/8" 2 3/8" 21 ga. 0.159" 110° Spiral UNF H3 2748A32 19.92

12-24 21/32" 2 3/8" 16 ga. 0.177" 110° Spiral UNC H3 2748A33 20.41

12-28 21/32" 2 3/8" 15 ga. 0.18" 110° Spiral UNF H3 2748A34 23.12

1/4"-20 25/32" 2 1/2" 7 ga. 0.201" 110° Spiral UNC H3 2748A38 19.92

1/4"-28 25/32" 2 1/2" 3 ga. 0.213" 110° Spiral UNF H3 2748A39 23.12

5/16"-18 15/16" 2 27/32" F 0.257" 110° Spiral UNC H3 2748A43 30.12

5/16"-24 15/16" 2 27/32" I 0.272" 110° Spiral UNF H3 2748A44 30.12

3/8"-16 1 1/16" 3 3/8" 5/16" 0.3125" 110° Spiral UNC H3 2748A47 36.50

3/8"-24 1 1/16" 3 3/8" Q 0.332" 110° Spiral UNF H3 2748A48 37.04

7/16"-14 1 1/4" 3 3/4" U 0.368" 110° Spiral UNC H3 2748A49 43.80

7/16"-20 1 1/4" 3 3/4" 25/64" 0.3906" 110° Spiral UNF H3 2748A51 44.44

1/2"-13 1 3/8" 4 1/16" 27/64" 0.4219" 110° Spiral UNC H3 2748A57 49.41

1/2"-20 1 3/8" 4 1/16" 29/64" 0.4531" 110° Spiral UNF H3 2748A58 49.41

5/8"-11 1 3/4" 5 1/16" 17/32" 0.5313" 110° Straight UNC H3 2748A11 186.45

3/4"-10 2" 6" 21/32" 0.6563" 110° Straight UNC H3 2748A12 209.60

Titanium Nitride (TiN) Coated High-Speed Steel

4-40 3/8" 1 7/8" 43 ga. 0.089" 118° Straight UNC H2 2748A81 26.86

6-32 7/16" 2" 36 ga. 0.1065" 118° Straight UNC H3 2748A82 26.56

8-32 1/2" 2 1/8" 29 ga. 0.136" 118° Straight UNC H3 2748A83 27.60

10-24 5/8" 2 3/8" 25 ga. 0.1495" 118° Straight UNC H3 2748A84 27.60

10-32 5/8" 2 3/8" 21 ga. 0.159" 118° Straight UNF H3 2748A85 27.60

1/4"-20 25/32" 2 1/2" 7 ga. 0.201" 118° Straight UNC H3 2748A86 28.96

1/4"-28 25/32" 2 1/2" 3 ga. 0.213" 118° Straight UNF H3 2748A87 29.42

5/16"-18 15/16" 2 23/32" F 0.257" 118° Straight UNC H3 2748A88 43.52

3/8"-16 1 1/8" 2 15/16" 5/16" 0.3125" 118° Straight UNC H3 2748A89 51.02

1/2"-13 1 3/8" 4 1/16" 27/64" 0.4219" 118° Straight UNC H3 2748A91 66.76

Metric

Thread

Drill Bit

Plug Chamfer

Size Pitch,

mm Lg. Overall

Lg. Size Decimal Size

Equivalent Point

Angle Flute

Type Pitch

Dia. Limit Each

Uncoated High-Speed Steel

M3 0.5 13/32" 1 15/16" 2.5 mm 0.0984" 110° Spiral D3 2748A59 $26.29

M4 0.7 1/2" 2 1/8" 3.3 mm 0.1299" 110° Spiral D4 2748A61 25.21

M5 0.8 5/8" 2 3/8" 4.2 mm 0.1653" 110° Spiral D4 2748A63 22.80

M6 1 25/32" 2 1/2" 5 mm 0.1968" 110° Spiral D5 2748A64 22.80

M8 1.25 15/16" 2 27/32" 6.7 mm 0.2637" 110° Spiral D5 2748A66 38.31

M10 1.5 1 1/16" 3 3/8" 8.5 mm 0.3346" 110° Spiral D6 2748A67 43.79

M12 1.75 1 3/8" 4 1/16" 10.2 mm 0.4015" 110° Spiral D6 2748A68 54.57

Titanium Nitride (TiN) Coated High-Speed Steel

M3 0.5 13/32" 1 15/16" 2.5 mm 0.0984" 118° Straight D3 2748A92 29.06

M4 0.7 1/2" 2 1/8" 3.3 mm 0.1299" 118° Straight D4 2748A93 30.81

M5 0.8 5/8" 2 3/8" 4.2 mm 0.1653" 118° Straight D4 2748A94 30.81

M6 1 25/32" 2 1/2" 5 mm 0.1968" 118° Straight D5 2748A95 30.81

M8 1.25 15/16" 2 23/32" 6.7 mm 0.2637" 118° Straight D6 2748A96 46.30