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ASTM A490
Metric Heavy Hex Structural Bolts-NINGBO BOLT |
Dimensions of ASTM A490M Metric Heavy Hex
Structural Bolts
|
Diameter, D,
and Thread Pitch |
Body Diameter
Ds |
Width Across
Flats, S |
Width Across
Corners, E |
Head Height,
K |
Wrenching
Height, K1, Min |
Washer Face
Diameter, Dw, Min |
Washer Face
Thickness, C |
Thread
Length, B, Basic |
Transition
Thread Length, Xo, Max |
|
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Length ＋ 100 |
Length > 100 |
|
M16 x 2 |
16.70 |
15.30 |
27 |
26.16 |
31.18 |
29.56 |
10.75 |
9.25 |
6.5 |
24.9 |
0.8 |
0.4 |
31 |
38 |
6 |
|
M20 x 2.5 |
20.84 |
19.16 |
34 |
33 |
39.26 |
37.29 |
13.4 |
11.6 |
8.1 |
31.4 |
0.8 |
0.4 |
36 |
43 |
7.5 |
|
M22 x 2.5 |
22.84 |
21.16 |
36 |
35 |
41.57 |
39.55 |
14.9 |
13.1 |
9.2 |
33.3 |
0.8 |
0.4 |
38 |
45 |
7.5 |
|
M24 x 3 |
24.84 |
23.16 |
41 |
40 |
47.34 |
45.2 |
15.9 |
14.1 |
9.9 |
38 |
0.8 |
0.4 |
41 |
48 |
9 |
|
M27 x 3 |
27.84 |
26.16 |
46 |
45 |
53.12 |
50.85 |
17.9 |
16.1 |
11.3 |
42.8 |
0.8 |
0.4 |
44 |
51 |
9 |
|
M30 x 3.5 |
30.84 |
29.16 |
50 |
49 |
57.74 |
55.37 |
19.75 |
17.65 |
12.4 |
46.5 |
0.8 |
0.4 |
49 |
56 |
10.5 |
|
M36 x 4 |
37.00 |
35.00 |
60 |
58.8 |
69.28 |
66.44 |
23.55 |
21.45 |
15 |
55.9 |
0.8 |
0.4 |
56 |
63 |
12 |
aBasic
thread length, B, is a reference dimension.
1.
bTransition
thread length, X, includes the length of incomplete threads and tolerances on
grip gaging length and body length. It is intended for calculation purposes.
2.
All dimensions are in millimeters.
3.
For additional manufacturing and acceptance
specifications, reference should be made to the ANSIB18.2.3.7M-1979, R1995
standard.
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