IADC321 drill bit

Technical specifications and parameters for Roller Bit (Tricone Bit)

Size

IADC Code

API Regular Pin (in)

in

mm

3 7/8

98.43

126,617

4 1/4

107.9

131,321

2 3/8

4 5/8

117.5

121,241,527

2 7/8

4 3/4

120.6

241

5 5/8

142.9

121,241,321,537

3 1/2

5 7/8

149.2

241,321,517,537,547,617,637

6

152.4

211,216,246,437,517,527,537,547,617,637

6 1/8

155.6

117,211,437,517

6 1/4

158.7

121,241,321,517,527,537,547,637

6 1/2

165.1

517

6 3/4

171.4

121,241,321

7 1/2

190.5

121,124,134,217,244,517,527,547,617

4 1/2

7 7/8

200

121,124,131,134,241,321,517,527,547,617

8 3/8

212.7

215,217,517,527,537,547,617,637

8 1/2

215.9

114,116,117,121,124,126,127,131,134,137,211,216,217 241,247,321,437,447,517,527,537,547,617,637,837< /p>

8 3/4

222.2

127,417,437,447,517,537,617

9 1/2

241.3

117,124,125,127,437,517,527,537,617,637

6 5/8

9 5/8

244.5

114,121,124,131,134,437,517,527

9 7/8

250.8

115,121,211,241,321,512,542,612,732

10

254

126

10 5/8

269.9

127,217,417,517,527

11 5/8

295.3

117,127,137,217,417,517,537,547

12

304.8

124,126,216,517,537,547,617

12 1/8

308

547

12 1/4

311.1

114,115,116,117,121,124,126,131,134,137,211,214,244,437,517,527,537,54 7,617,637

13 5/8

346.1

114,115,121,124,437,515,517

13 3/4

349.2

114,115,437,517

14 3/4

374.6

136,127,517,527

7 5/8

15

381

121,124,241,244

15 1/2

393.7

125,215,217,517,537

16

406.4

115,215,515,535,545

17 1/2

444.5

435,515,437,517,527,537,547

18

457.2

547

18 1/2

469.9

547

19 1/4

489

115,225

20

508

125,215,515,525

22

558.8

124

24

609.6

124

26

660.4

114,124,134,525

36

914.4

124