The structural grade for bolts is frequently referred to as the Din 933 Grade 8.8 Standard. Steel with a medium carbon content is used to create fasteners that meet Bs 3692 Grade 8.8 specifications. Both quenching and tempering have been used to subject this medium carbon steel to heat treatment. Although medium carbon steel grades are more affordable and have good ductile and malleable characteristics, they typically have lower tensile strength as an alloy.
Table of Content
Heat treatment can raise the hardness of medium carbon steels Metric Grade 8.8. Mechanical Fasteners change as a result of heating the En 15048 Grade 8.8. For instance, the Class 8.8 Bolts have improved impact resistance, yield strength, hardness, and ductility.
the use of heat It is commonly known that Grade 8.8 Bolt performs well in most situations and has good tensile strength. As a result, these fasteners can be found in processing, railroad, and motorised equipment. The 8.8 Bolt Material's poor performance in environments with high temperatures is one disadvantage.
The galvanised hexagon heads are one of the 8.8 High Tensile Bolts' distinguishing features. These heads are constructed of zinc or have zinc plating on them. The 8.8 Stainless Steel Bolts are simple to recognise because they are frequently stamped with a "8.8" or have a set of three radial lines on the head of the 8.8 Galvanized Bolts. The En 15048 Bolt can be coated, plated, or polished as desired by the client or by the product end use.
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Grade 8.8 Fasteners Grades
|
Grade 8.8
|
|
Grade 8.8 Fasteners Standard
|
ASTM A324, ASME SA324
|
|
Grade 8.8 Fasteners Size
|
Dia M 20 to 100 mm
Inch 3/4" to 3.1/2" |
|
Grade 8.8 Fasteners finish
|
Zinc plated / Plain / Hot dip galvanised
|
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Grade 8.8 Fasteners Price List
|
Price Per Pcs.
|
|---|---|
|
Grade 8.8 Machine bolts price
|
USD $5.10
|
|
Grade 8.8 Hex head bolts price
|
USD $6.05
|
|
High Tensile Grade 8.8 Socket Head Cap Screw price
|
USD $3.10
|
|
Grade 8.8 Screws price
|
USD $3.70
|
|
Grade 8.8 Dowel Pins price
|
USD $1.20
|
|
Grade 8.8 Allen bolts price
|
USD $4.25
|
|
Grade 8.8 Washer price
|
USD $1.00
|
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Grade 8.8 Nuts price
|
USD $1.45
|

**All measurements in millimeters**
|
DIA |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
M18 |
M20 |
M22 |
M24 |
M27 |
M30 |
M33 |
M36 |
M39 |
M42 |
M45 |
M48 |
M52 |
|
Pitch |
0.7 |
0.8 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
||||||||
|
Grade A upto length |
40 |
50 |
60 |
80 |
100 |
120 |
140 |
150 |
Grade A not applicable to these dia’s |
||||||||||||
|
Head Across Flat (S) Nom = Max Min Grade A Grade B |
7 |
8 |
10 |
13 |
16 |
18 |
21 |
24 |
27 |
30 |
34 |
36 |
41 |
46 |
50 |
55 |
60 |
65 |
70 |
75 |
80 |
|
6.78 |
7.78 |
9.78 |
12.73 |
15.73 |
17.73 |
20.67 |
23.67 |
26.67 |
29.67 |
33.38 |
35.38 |
Grade A not applicable to these dia’s |
|||||||||
|
6.64 |
7.64 |
9.64 |
12.57 |
15.57 |
17.57 |
20.16 |
23.16 |
26.16 |
29.16 |
33 |
35 |
40 |
45 |
49 |
53.8 |
58.8 |
63.1 |
68.1 |
73.1 |
78.1 |
|
|
Head Height (K) Nom Tol + or – Grade A Grade B |
2.8 |
3.5 |
4 |
5.3 |
6.4 |
7.5 |
8.8 |
10 |
11.5 |
12.5 |
14 |
15 |
17 |
18.7 |
21 |
22.5 |
25 |
26 |
28 |
30 |
33 |
|
0.125 |
0.15 |
0.18 |
0.215 |
Grade A not applicable to these dia’s |
|||||||||||||||||
|
0.2 |
0.24 |
0.29 |
0.35 |
0.42 |
0.5 |
||||||||||||||||
|
Across corners e Min Grade A Grade B |
7.66 |
8.79 |
11.05 |
14.38 |
17.77 |
20.03 |
23.36 |
26.75 |
30.14 |
33.53 |
37.72 |
39.98 |
Grade A not applicable to these dia’s |
||||||||
|
7.5 |
8.63 |
10.89 |
14.2 |
17.59 |
19.85 |
22.78 |
26.17 |
29.56 |
32.95 |
37.29 |
39.55 |
45.2 |
50.85 |
55.37 |
60.79 |
66.44 |
71.3 |
76.95 |
82.6 |
88.25 |
|
|
Thread Length (b) For lengths < or = 125mm For lengths > 125mm <= 200mm For lengths > 200mm |
14 |
16 |
18 |
22 |
26 |
30 |
34 |
38 |
42 |
46 |
50 |
54 |
60 |
66 |
Not specified as full thread recommended |
||||||
|
20 |
22 |
24 |
28 |
32 |
36 |
40 |
44 |
48 |
52 |
56 |
60 |
66 |
72 |
78 |
84 |
90 |
96 |
102 |
108 |
116 |
|
|
33 |
35 |
37 |
41 |
45 |
49 |
53 |
57 |
61 |
65 |
69 |
73 |
79 |
85 |
91 |
97 |
103 |
109 |
115 |
121 |
129 |
|
|
Major Dia at thread (min) |
3.838 |
4.826 |
5.794 |
7.76 |
9.732 |
11.701 |
13.682 |
15.682 |
17.623 |
19.623 |
21.623 |
23.577 |
26.577 |
29.522 |
32.522 |
35.465 |
38.465 |
41.437 |
44.437 |
47.399 |
51.399 |
|
Major Dia at thread (max) |
3.978 |
4.976 |
5.974 |
7.972 |
9.968 |
11.966 |
13.962 |
15.962 |
17.958 |
19.958 |
21.958 |
23.952 |
26.952 |
29.947 |
32.947 |
35.94 |
38.94 |
41.937 |
44.937 |
47.929 |
51.929 |
Grade 8.8 Hex Bolts In Bsw/Bsf Threads To Bs 1083-1965
All dimensions in Inches
|
DIA |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
9/16 |
5/8 |
3/4 |
7/8 |
1 |
1 1/8 |
1 1/4 |
1 3/8 |
1 1/2 |
1 3/4 |
2 |
|
BSW Pitch (TPI) |
20 |
18 |
16 |
14 |
12 |
12 |
11 |
10 |
9 |
8 |
7 |
7 |
6 |
5 |
4.5 |
|
|
BSF PITCH (TPI) |
26 |
22 |
20 |
18 |
16 |
16 |
14 |
12 |
11 |
10 |
9 |
9 |
8 |
8 |
7 |
7 |
|
Head Across Flat (S) Min Max |
0.438 |
0.518 |
0.592 |
0.702 |
0.812 |
0.912 |
1.000 |
1.190 |
1.288 |
1.468 |
1.640 |
1.815 |
2.005 |
2.175 |
2.520 |
2.700 |
|
0.445 |
0.525 |
0.600 |
0.710 |
0.820 |
0.920 |
1.010 |
1.200 |
1.300 |
1.480 |
1.670 |
1.860 |
2.050 |
2.220 |
2.580 |
2.760 |
|
|
Head height (K) Min Max |
0.166 |
0.208 |
0.250 |
0.292 |
0.333 |
0.365 |
0.407 |
0.480 |
0.563 |
0.636 |
0.710 |
0.790 |
0.880 |
0.960 |
1.110 |
1.270 |
|
0.176 |
0.218 |
0.260 |
0.302 |
0.343 |
0.375 |
0.417 |
0.500 |
0.583 |
0.666 |
0.750 |
0.830 |
0.920 |
1.000 |
1.170 |
1.330 |
|
|
Across corners e Max |
0.51 |
0.61 |
0.69 |
0.82 |
0.95 |
1.06 |
1.17 |
1.39 |
1.50 |
1.71 |
1.93 |
2.15 |
2.37 |
2.56 |
2.98 |
3.19 |
|
Thread Length b Min |
Twice the Dia (2D) |
|||||||||||||||
|
Major Dia at thread BSW (min) |
0.2427 |
0.3046 |
0.3666 |
0.4285 |
0.4904 |
0.5527 |
0.6147 |
0.7390 |
0.8653 |
0.9897 |
1.1140 |
1.2388 |
1.4879 |
1.7369 |
1.9862 |
|
|
Major Dia at thread BSW (max) |
0.2488 |
0.3112 |
0.3736 |
0.4360 |
0.4985 |
0.5609 |
0.6233 |
0.7482 |
0.8750 |
1.000 |
1.1250 |
1.250 |
1.500 |
1.750 |
2.000 |
|
|
Major Dia at thread BSF (min) |
0.2432 |
0.3051 |
0.3671 |
0.4290 |
0.4910 |
0.5533 |
0.6153 |
0.7394 |
0.8658 |
0.9902 |
1.1148 |
1.2395 |
1.3640 |
1.4888 |
1.7380 |
1.9876 |
|
Major Dia at thread BSF (max) |
0.2489 |
0.3113 |
0.3737 |
0.4361 |
0.4985 |
0.5610 |
0.6234 |
0.7482 |
0.8750 |
1.000 |
1.1250 |
1.250 |
1.375 |
1.500 |
||
All dimensions in Inches
|
DIA |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
9/16 |
5/8 |
3/4 |
7/8 |
1 |
1 1/8 |
1 1/4 |
1 3/8 |
1 1/2 |
1 3/4 |
2 |
|
UNC Pitch (TPI) |
20 |
18 |
16 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
7 |
6 |
6 |
5 |
4.5 |
|
UNF Pitch (TPI) |
28 |
24 |
24 |
24 |
20 |
20 |
18 |
16 |
14 |
12 |
NOT RECOMMENDED |
|||||
|
Head Across Flat (S) Min Max |
0.430 |
0.493 |
0.554 |
0.617 |
0.742 |
0.804 |
0.929 |
1.115 |
1.300 |
1.488 |
1.657 |
1.830 |
2.017 |
2.205 |
2.565 |
2.940 |
|
0.437 |
0.500 |
0.562 |
0.625 |
0.750 |
0.812 |
0.937 |
1.125 |
1.312 |
1.500 |
1.687 |
1.875 |
2.062 |
2.250 |
2.625 |
3.000 |
|
|
Head Height (K) Min
Max |
0.153 |
0.201 |
0.233 |
0.281 |
0.313 |
0.361 |
0.393 |
0.463 |
0.543 |
0.597 |
0.678 |
0.773 |
0.838 |
0.934 |
1.074 |
1.203 |
|
0.163 |
0.211 |
0.243 |
0.291 |
0.323 |
0.371 |
0.403 |
0.483 |
0.563 |
0.627 |
0.718 |
0.813 |
0.878 |
0.974 |
1.134 |
1.263 |
|
|
Across corners e (MAX) |
0.505 |
0.577 |
0.650 |
0.722 |
0.866 |
0.938 |
1.083 |
1.300 |
1.515 |
1.732 |
1.948 |
2.165 |
2.382 |
2.598 |
3.031 |
3.464 |
|
Thread Length b (Min) |
2D + 1/4” upto bolt length of 6” and 2D + 1/2” for bolt lengths above 6” |
|||||||||||||||
|
Major Dia at thread ( Class 2A) Min for UNC |
0.2408 |
0.3026 |
0.3643 |
0.4258 |
0.4876 |
0.5495 |
0.6113 |
0.7353 |
0.8592 |
0.9830 |
1.1064 |
1.2314 |
1.3544 |
1.4794 |
1.7268 |
1.9751 |
|
Major Dia at thread (2A) Min for UNF |
0.2425 |
0.3042 |
0.3667 |
0.4281 |
0.4906 |
0.5524 |
0.6149 |
0.7391 |
0.8631 |
0.9868 |
NOT RECOMMENDED |
|||||
|
Major Dia at thread Class 2A Max for UNC |
0.2490 |
0.3113 |
0.3737 |
0.4361 |
0.4985 |
0.5609 |
0.6234 |
0.7482 |
0.8731 |
0.9980 |
1.1228 |
1.2478 |
1.3726 |
1.4976 |
1.7473 |
1.9971 |
|
DIA |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
M36 |
|
HARDNESS FOR PL. WASHER |
35 TO 45 HRC |
||||||
|
Hardness for Hot Dip Galvd washer |
26 HRC |
||||||
|
Outer Dia (Max) d2 |
34 |
42 |
44 |
50 |
56 |
60 |
72 |
|
Inner Dia (Min) d1 |
18 |
22 |
24 |
26 |
30 |
33 |
39 |
|
Thickness (S) |
3.1 TO 4.6 |
||||||
|
Tolerance for OD Minus(-) |
1.6 |
1.9 |
|||||
|
Tolerance for ID Plus(+) |
0.43 |
0.52 |
0.62 |
||||
All dimensions in mm
|
DIA |
M12 |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
M36 |
|
Weight in Kgs for 100 nos |
0.703 |
1.46 |
1.96 |
2.43 |
3.06 |
5.02 |
6.32 |
11.50 |
|
Outer Dia (Max) d2 |
24 |
30 |
37 |
39 |
44 |
50 |
56 |
66 |
|
Inner Dia (Min) d1 |
13 |
17 |
21 |
23 |
25 |
28 |
31 |
37 |
|
Thickness (S) |
3 |
4 |
4 |
4 |
4 |
5 |
5 |
6 |
|
Tolerance for OD Minus(-) |
0.52 |
0.62 |
1 |
1.20 |
||||
|
Tolerance for ID Plus(+) |
0.27 |
0.33 |
0.52 |
0.62 |
||||
|
Tolerance for thickness + or – |
0.30 |
0.60 |
||||||

**All measurements in millimeters**
|
DIA |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
M18 |
M20 |
M22 |
M24 |
M27 |
M30 |
M33 |
M36 |
M39 |
M42 |
M45 |
M48 |
M52 |
|
Pitch |
0.7 |
0.8 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2 |
2.5 |
2.5 |
2.5 |
3 |
3 |
3.5 |
3.5 |
4 |
4 |
4.5 |
4.5 |
5 |
5 |
|
Across Flat (S) Max Min |
7 |
8 |
10 |
13 |
16 |
18 |
21 |
24 |
27 |
30 |
34 |
36 |
41 |
46 |
50 |
55 |
60 |
65 |
70 |
75 |
80 |
|
6.78 |
7.78 |
9.78 |
12.73 |
15.73 |
17.73 |
20.67 |
23.67 |
26.16 |
29.16 |
33 |
35 |
40 |
45 |
49 |
53.8 |
58.8 |
63.1 |
68.1 |
73.1 |
78.1 |
|
|
Thickness (M) Max Min |
3.2 |
4.7 |
5.2 |
6.8 |
8.4 |
10.8 |
12.8 |
14.8 |
15.8 |
18 |
19.4 |
21.5 |
23.8 |
25.6 |
28.7 |
31 |
33.4 |
34 |
36 |
38 |
42 |
|
2.9 |
4.4 |
4.9 |
6.44 |
8.04 |
10.37 |
12.1 |
14.1 |
15.1 |
16.9 |
18.1 |
20.2 |
22.5 |
24.3 |
27.4 |
29.4 |
31.8 |
32.4 |
34.4 |
36.4 |
40.4 |
|
|
Across corners (E) Min |
7.66 |
8.79 |
11.05 |
14.38 |
17.77 |
20.03 |
23.35 |
26.75 |
29.56 |
32.95 |
37.29 |
39.55 |
45.2 |
50.85 |
55.37 |
60.79 |
66.44 |
71.3 |
76.95 |
82.6 |
88.25 |
|
Minor Dia at thread (min) |
3.242 |
4.134 |
4.917 |
6.647 |
8.376 |
10.106 |
11.835 |
13.835 |
15.294 |
17.294 |
19.294 |
20.752 |
23.752 |
26.211 |
29.211 |
31.67 |
34.67 |
37.129 |
40.129 |
42.587 |
46.587 |
|
Minor Dia at thread (max) |
3.422 |
4.334 |
5.153 |
6.912 |
8.676 |
10.441 |
12.210 |
14.210 |
15.744 |
17.774 |
19.774 |
21.252 |
24.252 |
26.771 |
29.771 |
32.27 |
35.27 |
37.799 |
40.799 |
43.297 |
47.297 |
Grade 8.8 Hex Nuts In Bsw/Bsf Threads To Bs 1083-1965 Threads To Bs 84
All dimensions in inches
|
DIA |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
9/16 |
5/8 |
3/4 |
7/8 |
1 |
1 1/8 |
1 1/4 |
1 3/8 |
1 1/2 |
1 3/4 |
2 |
|
BSW Pitch (TPI) |
20 |
18 |
16 |
14 |
12 |
12 |
11 |
10 |
9 |
8 |
7 |
7 |
– |
6 |
5 |
4.5 |
|
BSF PITCH (TPI) |
26 |
22 |
20 |
18 |
16 |
16 |
14 |
12 |
11 |
10 |
9 |
9 |
8 |
8 |
7 |
7 |
|
WIDTH Across Flat (S) Min Max |
0.438 |
0.518 |
0.592 |
0.702 |
0.812 |
0.912 |
1.000 |
1.190 |
1.288 |
1.468 |
1.640 |
1.815 |
2.005 |
2.175 |
2.520 |
2.700 |
|
0.445 |
0.525 |
0.600 |
0.710 |
0.820 |
0.920 |
1.010 |
1.200 |
1.300 |
1.480 |
1.670 |
1.860 |
2.050 |
2.220 |
2.580 |
2.760 |
|
|
Thickness (M) Min Max |
0.190 |
0.240 |
0.302 |
0.365 |
0.427 |
0.490 |
0.552 |
0.677 |
0.740 |
0.865 |
0.990 |
1.105 |
1.230 |
1.355 |
1.605 |
1.730 |
|
0.200 |
0.250 |
0.312 |
0.375 |
0.437 |
0.500 |
0.562 |
0.687 |
0.750 |
0.875 |
1.000 |
1.125 |
1.250 |
1.375 |
1.625 |
1.750 |
|
|
Across corners (Max inches) |
0.51 |
0.61 |
0.69 |
0.82 |
0.95 |
1.06 |
1.17 |
1.39 |
1.50 |
1.71 |
1.93 |
2.15 |
2.37 |
2.56 |
2.98 |
3.19 |
|
Minor Dia at thread BSW (min) |
0.1860 |
0.2413 |
0.2950 |
0.3461 |
0.3932 |
0.4557 |
0.5086 |
0.6220 |
0.7328 |
0.8400 |
0.9420 |
1.0670 |
– |
1.2866 |
1.4938 |
1.7154 |
|
Minor Dia at thread BSW (max) |
0.2030 |
0.2594 |
0.3145 |
0.3674 |
0.4169 |
0.4794 |
0.5338 |
0.6490 |
0.7620 |
0.8720 |
0.9776 |
1.1026 |
– |
1.3269 |
1.5408 |
1.7668 |
|
Minor Dia at thread BSF (min) |
0.2008 |
0.2543 |
0.3110 |
0.3663 |
0.4200 |
0.4825 |
0.5336 |
0.6432 |
0.7586 |
0.8720 |
0.9828 |
1.1078 |
1.2150 |
1.3400 |
1.5670 |
1.8170 |
|
Minor Dia at thread BSF (max) |
0.2125 |
0.2684 |
0.3280 |
0.3844 |
0.4395 |
0.5020 |
0.5549 |
0.6669 |
0.7838 |
0.8990 |
1.0120 |
1.1370 |
1.2470 |
1.3720 |
1.6026 |
1.8526 |
All dimensions in inches
|
DIA |
1/4 |
5/16 |
3/8 |
7/16 |
1/2 |
9/16 |
5/8 |
3/4 |
7/8 |
1 |
1 1/8 |
1 1/4 |
1 3/8 |
1 1/2 |
1 3/4 |
2 |
|
UNC Pitch (TPI) |
20 |
18 |
16 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
7 |
6 |
6 |
5 |
4.5 |
|
UNF Pitch (TPI) |
28 |
24 |
24 |
24 |
20 |
20 |
18 |
16 |
14 |
12 |
NOT RECOMMENDED |
|||||
|
Width Across Flat (S) Min Max |
0.430 |
0.493 |
0.554 |
0.617 |
0.742 |
0.804 |
0.929 |
1.115 |
1.300 |
1.488 |
1.657 |
1.830 |
2.017 |
2.205 |
2.565 |
2.940 |
|
0.437 |
0.500 |
0.562 |
0.625 |
0.750 |
0.812 |
0.937 |
1.125 |
1.312 |
1.500 |
1.687 |
1.875 |
2.062 |
2.250 |
2.625 |
3.000 |
|
|
Thickness (M) Min Max |
0.214 |
0.261 |
0.323 |
0.370 |
0.432 |
0.479 |
0.542 |
0.631 |
0.740 |
0.844 |
0.949 |
1.037 |
1.147 |
1.251 |
1.470 |
1.684 |
|
0.224 |
0.271 |
0.333 |
0.380 |
0.442 |
0.489 |
0.552 |
0.651 |
0.760 |
0.874 |
0.989 |
1.087 |
1.197 |
1.311 |
1.530 |
1.754 |
|
|
Across corners (E) Max |
0.505 |
0.577 |
0.650 |
0.722 |
0.866 |
0.938 |
1.083 |
1.300 |
1.515 |
1.732 |
1.948 |
2.165 |
2.382 |
2.598 |
3.031 |
3.464 |
|
Minor Dia at thread (min) UNC (2B) |
0.1960 |
0.2520 |
0.3070 |
0.3600 |
0.4170 |
0.4720 |
0.5270 |
0.6420 |
0.7550 |
0.8650 |
0.9700 |
1.0950 |
1.1950 |
1.3200 |
1.5340 |
1.7590 |
|
Minor Dia at thread (max) UNC (2B) |
0.2070 |
0.2650 |
0.3210 |
0.3760 |
0.4340 |
0.4900 |
0.5460 |
0.6630 |
0.7780 |
0.8900 |
0.9980 |
1.1230 |
1.2250 |
1.3500 |
1.5680 |
1.7950 |
|
Minor Dia at thread (min) UNF (2B) |
0.2110 |
0.2670 |
0.3300 |
0.3830 |
0.4460 |
0.5020 |
0.5650 |
0.6820 |
0.7980 |
0.9100 |
NOT RECOMMENDED |
|||||
|
Minor Dia at thread (max) UNF (2B) |
0.2200 |
0.2770 |
0.3400 |
0.3950 |
0.4570 |
0.5150 |
0.5780 |
0.6960 |
0.8140 |
0.9280 |
||||||
All dimensions in mm
|
DIA |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
M36 |
|
Pitch |
2 |
2.5 |
2.5 |
3 |
3 |
3.5 |
4 |
|
Head Across Flat (B) Min |
26.16 |
33 |
35 |
40 |
45 |
49 |
58.8 |
|
Head Across Flat (B) Max |
27 |
34 |
36 |
41 |
46 |
50 |
60 |
|
Height (H) Min Max |
16.4 |
19.4 |
22.3 |
22.9 |
26.3 |
29.1 |
35 |
|
17.1 |
20.7 |
23.6 |
24.2 |
27.6 |
30.7 |
36.6 |
|
|
Across corners C min |
29.56 |
37.29 |
39.55 |
45.20 |
50.85 |
55.37 |
66.44 |
|
Minor Dia at thread (min) |
14.235 |
17.694 |
19.694 |
21.202 |
24.252 |
26.761 |
32.270 |
|
Minor Dia at thread (max) |
14.610 |
18.144 |
20.144 |
21.702 |
24.752 |
27.321 |
32.870 |

|
DIA |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
M18 |
M20 |
M22 |
M24 |
M27 |
M30 |
M33 |
M36 |
M39 |
M42 |
M45 |
M48 |
M52 |
|
Pitch |
0.7 |
0.8 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2 |
2.5 |
2.5 |
2.5 |
3 |
3 |
3.5 |
3.5 |
4 |
4 |
4.5 |
4.5 |
5 |
5 |
|
Grade A upto length |
40 |
50 |
60 |
80 |
100 |
120 |
140 |
150 |
Grade A not applicable to these dia’s |
||||||||||||
|
Head Across Flat (S) Max Min(Grade A) Min (Grade B) |
7 |
8 |
10 |
13 |
16 |
18 |
21 |
24 |
27 |
30 |
34 |
36 |
41 |
46 |
50 |
55 |
60 |
65 |
70 |
75 |
80 |
|
6.78 |
7.78 |
9.78 |
12.73 |
15.73 |
17.73 |
20.67 |
23.67 |
26.67 |
29.67 |
33.38 |
35.38 |
Grade A not applicable to these dia’s |
|||||||||
|
6.64 |
7.64 |
9.64 |
12.57 |
15.57 |
17.57 |
20.16 |
23.16 |
26.16 |
29.16 |
33 |
35 |
40 |
45 |
49 |
53.8 |
58.8 |
63.1 |
68.1 |
73.1 |
78.1 |
|
|
Head Thickness (K) Tol + or – Grade A
Grade B |
2.8 |
3.5 |
4 |
5.3 |
6.4 |
7.5 |
8.8 |
10 |
11.5 |
12.5 |
14 |
15 |
17 |
18.7 |
21 |
22.5 |
25 |
26 |
28 |
30 |
33 |
|
0.125 |
0.15 |
0.18 |
0.215 |
Grade A not applicable to these dia’s |
|||||||||||||||||
|
0.2 |
0.24 |
0.29 |
0.35 |
0.42 |
0.5 |
||||||||||||||||
|
Across corners e Min Grade A
Min Grade B |
7.66 |
8.79 |
11.05 |
14.38 |
17.77 |
20.03 |
23.36 |
26.75 |
30.14 |
33.53 |
37.72 |
39.98 |
Grade A not applicable to these dia’s |
||||||||
|
7.5 |
8.63 |
10.89 |
14.2 |
17.59 |
19.85 |
22.78 |
26.17 |
29.56 |
32.95 |
37.29 |
39.55 |
45.2 |
50.85 |
55.37 |
60.79 |
66.44 |
71.3 |
76.95 |
82.6 |
88.25 |
|
|
Major Dia at thread (min) |
3.838 |
4.826 |
5.794 |
7.76 |
9.732 |
11.701 |
13.682 |
15.682 |
17.623 |
19.623 |
21.623 |
23.577 |
26.577 |
29.522 |
32.522 |
35.465 |
38.465 |
41.437 |
44.437 |
47.399 |
51.399 |
|
Major Dia at thread (max) |
3.978 |
4.976 |
5.974 |
7.972 |
9.968 |
11.966 |
13.962 |
15.962 |
17.958 |
19.958 |
21.958 |
23.952 |
26.952 |
29.947 |
32.947 |
35.94 |
38.94 |
41.937 |
44.937 |
47.929 |
51.929 |
|
ASTM A324 Grade 8.8 Bolts
|
Grade 8.8 Automotive Bolts
|
|
Grade 8.8 Coach Bolts Manufacturer
|
Grade 8.8 Button Head Bolts Stokist
|
|
ASTM A324 Grade 8.8 Toggle Bolts
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Grade 8.8 High Strength Bolts
|
|
Grade 8.8 Fasteners & Bolts
|
Grade 8.8 Deck Bolts
|
|
Grade 8.8 Allen Head Bolts Wholesaler
|
Grade 8.8 Header Bolts Distributor
|
|
Grade 8.8 Barrel Nuts
|
Grade 8.8 Rivet Nuts
|
|
Grade 8.8 Weld Nuts
|
Grade 8.8 Wheel Nuts
|
|
Grade 8.8 Flat Head Bolts
|
Grade 8.8 Hurricane Bolts
|
|
Grade 8.8 Gutter Bolts
|
Grade 8.8 Hook Bolts Manufacturer
|
|
Grade 8.8 Cap Head Bolts
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Grade 8.8 Exhaust Bolts Supplier
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