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Inconel 718 Stud Bolts to JIS B 1173 Studs

JIS B 1173

JIS B 1173 Studs Dimensions

Unit: mm

Nominal diameter of thread d 4 5 6 8 10 12 (14) 16 (18) 20
Pitch
p		 Coarse thread 0.7 0.8 1 1.25 1.5 1.75 2 2 2.5 2.5
Fine pitch thread --- --- --- --- 1.25 1.25 1.5 1.5 1.5 1.5
ds Max.(basic dimensions) 4 5 6 8 10 12 14 16 18 20
Min. 3.82 4.82 5.82 7.78 9.78 11.73 13.73 15.73 17.73 19.73
b That of
l ≤ 125 mm		 Min.      (basic dimensions) 14 16 18 22 26 30 34 38 42 46
Max. Coarse thread 15.4 17.6 20 24.5 29 33.5 38 42 47 51
Fine pitch thread --- --- --- --- 28.5 32.5 37 41 45 49
That of
l ≤ 125 mm		 Min.       (basic dimensions) --- --- --- --- --- --- --- --- 48 52
Max. Coarse thread --- --- --- --- --- --- --- --- 53 57
Fine pitch thread --- --- --- --- --- --- --- --- 51 55
bm Class 1 Min. --- --- --- --- 12 15 18 20 22 25
Max. --- --- --- --- 13.1 16.1 19.1 21.3 23.3 26.3
Class 2 Min. 6 7 8 11 15 18 21 24 27 30
Max. 6.75 7.9 8.9 12.1 16.1 19.1 22.3 25.3 28.3 31.3
Class 3 Min. 8 10 12 16 20 24 28 32 36 40
Max. 8.9 10.9 13.1 17.1 21.3 25.3 29.3 23.6 37.6 41.6
   re                                  (Approx.) 5.6 7 8.4 11 14 17 20 22 25 28
Nominal length l       Min.        Max. Preferable nominal length are given in the frame of
bold lines | those marked with * shall refer to Notee)|.
12 11.65 12.35 O* O* O*
14 13.65 14.35 O* O* O*
16 15.65 16.35 O* O* O* O*
18 17.65 18.35 O* O* O* O*
20 19.58 20.42 O* O* O* O* O*
22 21.58 22.42 O* O* O* O* O* O*
25 24.58 25.42 O* O* O* O* O* O* O*
28 27.58 28.42 O* O* O* O* O* O* O*
30 29.58 30.42 O* O* O* O* O* O* O*
Nominal length l       Min.        Max. Preferable nominal length are given in the frame of
bold lines | those marked with * shall refer to Notee)|.
32 31.5 32.5 O O O O O O* O* O* O*
35 34.5 35.5 O O O O O O* O* O* O* O*
38 37.5 38.5 O O O O O O O* O* O* O*
40 39.5 40.5 O O O O O O O* O* O* O*
45 44.5 45.5 O O O O O O O* O* O*
50 49.5 50.5 O O O O O O O* O*
55 54.4 55.6 O O O O O O O
60 59.4 60.6 O O O O O O
65 64.4 65.6 O O O O O O
70 69.4 70.6 O O O O O O
80 79.4 80.6 O O O O O O
90 89.3 90.7 O O O O O O
100 99.3 100.7 O O O O O O
110 109.3 110.7 O O
120 119.3 120.7 O O
140 139.2 140.8 O O
160 159.2 160.8 O O

NOTE 1 That of nominal diameter given in ( ) should not preferably be used as far as possible.
NOTE 2 See JIS B 1009 for the thread length on nut end side (b).
NOTE 3 For the thread length on stud end side (bm), whichever of Class 1, Class 2 and Class 3 shall be designated by the purchaser.
               Class 1 shall be equal to or nearly equal to 1.25d, Class 2 to 1.5d, and Class 3 to 2d.
             Class 1 and Class 2 are intended for the object studded into steel (including steel castings and steel forgings) or cast iron, and the                Class 3 is for light alloys.
NOTE 4 The end on stud end side shall be the chamfered end and the end on nut end side shall be the round end, and the shape and                dimensions thereof shall be in accordance with JIS B 1003.
Notes a) The dimensions x and u shall be the length of incomplete thread and 2 pitches or under.
           b) The straightness shall be as given in table 2.
           c) As those attached with * mark among the preferable nominal lengths are not capable of securing the specified thread length due to           the shortness of the nominal length (l), the thread length on nut end side may be made smaller than the minimum value of b of table 1             however, it shall not be made smaller than d+ 2P (d is the nominal designation of thread, and P is pitch, and the values of coarse thread             are used) given in table 3. In addition, the body length shall generally be La or over of table 3.

JIS B 1173 Measurement Of Straightness

Measurement Of Straightness

Nominal diameter of thread of d 4 5 6 8 10 12 14 16 18 20
Division of l Straightness l
Over Or under
--- 18 0.02 0.03 0.03 0.04 0.05 --- --- --- --- ---
18 30 0.03 0.03 0.04 0.05 0.05 0.06 0.07 0.08 0.08 0.08
30 50 0.06 0.06 0.06 0.07 0.07 0.08 0.08 0.09 0.10 0.10
50 80 --- --- --- 0.15 0.15 0.15 0.16 0.16 0.16 0.17
80 120 --- --- --- 0.32 0.33 0.33 0.33 0.33 0.33 0.33
120 160 --- --- --- --- --- --- --- --- 0.63 0.63

JIS B 1173 Minimum value of body length (la) excepting thread length on nut end side (b) and incomplete thread

Nominal diameter of thread of d 4 5 6 8 10 12 14 16 18 20
d + 23P (=b) 5.4 6.6 8 10.5 13 14 18 20 23 25
la 1 2 2.5 3 4

JIS B 1173 Premissible dimensional deviations and tolerance on screw threads on Stud end side of stud

Premissible dimensional deviations and tolerance on screw threads on Stud end side of stud

Unit: mm

Nominal diameter of thread (d) M4 M5 M6 M8 M10 M12 M14 M16 M18 M20
Coarse thread Major
diameter
d		 Basic dimension 4 5 6 8 10 12 14 16 18 20
Permissible
deviation		 Upper -0.03 -0.03 -0.03 -0.04 -0.04 -0.05 -0.05 -0.05 -0.05 -0.05
Lower -0.16 -0.17 -0.18 -0.21 -0.23 -0.24 -0.26 -0.26 -0.29 -0.29
Tolerance 0.13 0.14 0.15 0.17 0.19 0.19 0.21 0.21 0.24 0.24
Pitch
diameter
d2		 Basic dimension 3.545 4.480 5.350 7.188 9.026 10.863 12.701 14.701 16.376 18.376
Permissible
deviation		 Upper +0.06 +0.06 +0.07 +0.08 +0.08 +0.09 +0.10 +0.10 +0.11 +0.11
Lower 0 0 0 0 0 0 0 0 0 0
Tolerance 0.06 0.06 0.07 0.08 0.08 0.09 0.10 0.10 0.11 0.11
Minor
diameter
d1		 Basic dimension 3.242 4.134 4.917 6.647 8.76 10.106 11.835 13.835 15.294 17.294
Permissible
deviation		 Upper -0.041 -0.055 -0.147 -0.191 -0.244 -0.290 -0.333 -0.333 -0.432 -0.432
Lower -0.151 -0.175 -0.287 -0.361 -0.434 -0.510 -0.573 -0.573 -0.722 -0.722
Tolerance 0.11 0.12 0.14 0.17 0.19 0.22 0.24 0.24 0.29 0.29
Reference length of engagement 6 7 8 10 12 14 16 16 20 20
Nominal designation of thread (d) -- -- -- -- M10
x 1.25		 M12
x 1.25		 M14
x 1.5		 M16
x 1.5		 M18
x 1.5		 M20
x 1.5
Coarse thread Major
diameter
d		 Basic dimension -- -- -- -- 10 12 14 16 18 20
Permissible
deviation		 Upper -- -- -- -- -0.04 -0.04 -0.04 -0.04 -0.05 -0.05
Lower -- -- -- -- -0.19 -0.21 -0.21 -0.21 -0.22 -0.22
Tolerance -- -- -- -- 0.15 0.17 0.17 0.17 0.17 0.17
Pitch
diameter
d2		 Basic dimension -- -- -- -- 9.188 11.188 13.026 15.026 17.026 19.026
Permissible
deviation		 Upper -- -- -- -- +0.08 +0.09 +0.09 +0.09 +0.10 +0.10
Lower -- -- -- -- 0 0 0 0 0 0
Tolerance -- -- -- -- 0.08 0.09 0.09 0.09 0.10 0.10
Minor
diameter
d1		 Basic dimension -- -- -- -- 8.647 10.647 12.376 14.376 16.376 18.376
Permissible
deviation		 Upper -- -- -- -- -0.191 -0.191 -0.234 -0.234 -0.224 -0.224
Lower -- -- -- -- -0.361 -0.391 -0.434 -0.434 -0.474 -0.474
Tolerance -- -- -- -- 0.17 0.20 0.20 0.20 0.25 0.25
Standard length of engagement -- -- -- -- 6 10 10 10 15 15

In this table, the permissible deviations on the thread angle and pitch are not specified particularly, but these are included in the tolerances on the pitch diameter by converting into the pitch diameter. Therefore, as to the upper deviation of the pitch diameter in this table, the virtual pitch diameter shall be inspected using the measuring instrument or thread gauge having the reference length of engagement, and as to the lower permissible deviation of the pitch diameter, the simple pitch diameter shall be inspected.
NOTE: The tolerance zone class of the screw threads being engaged with those of table 4 should preferably be 5H specified in JIS B 0209-3.
Note a) The roundness of root may not necessarily be of an exact circular arc, but shall not be of an angular shape.