P H=0.866025P H1=0.541266P d d2=d-0.649519P d1=d-1.082532P D=d D2=d2 D1=d1

P L (a)

(b)

=

b

ACW CW:

60(mm)

60

55

M M8 M81

S S0.5

UNC UNF

3/8-16 UNC No.8-36 UNF

Tr Tr102

R R3/4

Rc Rc3/4

Rp Rp3/4

GPT G1/2

2

JIS B 1044

P47

P47

P47

2

2

2

P47

TF

T P F

T

sincos FPS

cossin FPN

NS

tan

cossintansincos FPFP

)costan(sin)sintan(cos FP

sintancos

costansin

FP

)tan( FP

FP =

sincos FPS

cossin FPN

NS

cossintansincos FPFP )costansin()sintan(cos FP

sintancos

costansin

FP

)tan( FP

T

W

F

a

S SA

W *

W AS SF

aqzdd

W

))(4/(2

1

2

z

65%

20%

P1 P2 P3 P4 P5 P6 P7 P8 P9 P10

6 33.7 22.9 15.8 11.4 8.7 7.5

8 33.3 22.3 15.0 10.2 7.0 5.0 3.9 3.3

10 33.1 22.2 14.9 10.0 6.7 4.6 3.1 2.3 1.6 1.5

100%

T 0.5T 1.8T 2.4T

4.66.8 8.812.9 10.912.9

SS SC SUS

CR CB AB

SCr SNC SCM

SCr, SNC SCM, SNCM

[N/mm2]

210

300160

105

15080

380

540290

500

710380

1

1.

2. 150% 3. 275% 4. 3

2

3

4

5

6

7 8

T = {22

(

cos + tan ) +

2

} 1000

=1

{

22

(

cos + tan ) +

2

}

TN.m N 2 mm mm mm mm ISO30 mm

T =

K

K

D1

T

F

D2

11

12

nD

FT

1kgf-mm kgf 1P.C.Dmm 0.15 1

24

22

2

2 nDd

T

2kgf-mm mm kgf/mm2 S45C-Q 2P.C.D.mm 2

TT1T2

T

TP

2.9 P43 2.9.1

P44

P=

H=10.8d L=d

L1=L+210mm C=2mm

L

L1

d

C

H=1.5d

L=1.51.3d

H=21.5d L=2d

H

d

=d M1212mm M121.75 M1235 35

5, 6, 8, 10, 12, 14, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 100, 110, 120, 130, 140, 150, 160, 180, 190, 200, 220, 240, 260, 280, 300, 25, 350, 375, 440

JIS

2.9.6 2010

M6

P48

M5

M8

18

2

2

6.8

P42

d1D1

d=D d1=0.8D D1=0.8D

Dd20h=2mm

P42

33.5

1mmJIS B 1001

=mm

2.8.2 P42

1.52

1.52

Step1 Step2

Step1 Step2

(b) (a)

2:

2

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