High tensile fasteners such as bolts are known to have a strength of about 1200 Mpa. Being the highest grade as compared to commercial or structural grade bolting, high tensile ones are used in those applications where high mechanical strength is a property that is deemed important.
Often, Structural steel fasteners are required to be treated with an external coating or a polishing to either add value or to improve some of its properties. Common finishes performed on high tensile include Zinc phosphate, Geoment and Dacromet, Flouro carbon coating and oiled. Usually zinc based finishes such as Zinc plating with white / blue / yellow / green / black passivations or even Hot dip galvanisation results in an increase in the corrosion resistance properties. Zinc based finishes also protect from getting oxidised, which in turn ensures good performance when exposed to harsh environments. Hence, they are less likely to incur mechanical damage.
Since structural bolts are designed to be strong, they won’t break easily under pressure. These grade 12.9 Bolts are intended to be used for the heaviest jobs.
High Tensile Fasteners
High Tensile Nuts
High Tensile bolt grade 8.8
High tensile bolt has the highest grade and strength of 1200 mpa. These are used in engine, motors and other areas. The manufacturing process includes advanced techniques and is thus available in the entire major industrial applications.8 grade bolt manufacturers India are provided by many steel companies but the one which is well-known and 20years old organization is regal sales corporation offer high quality material in the manufacturing process of the product and our experienced team is good enough to do the work.
High tensile stud bolt has the specifications like material, threads, surface finish, standard and many more. Carbon steel, mild steel, alloy steel and many other are the materials used in the manufacturing process. The grades of this are 8.8, 12.9 and 10.9. High Tensile Fasteners Grade has many types such as;
High tensile nuts are used in industries like automotive, wind energy and in many other sectors. This is cost effective and corrosion resistance. There are various types such as hexa, square, coupling, wheel , wing, and various other. This is of highest grade with tensile strength of 1200 MPa.
High Tensile Fasteners are basically used in aerospace, wind energy, automotive and in various other industries. It is the one where grades are available and the material used are stainless steel, brass, iron, bronze, carbon steel, alloy steel, aluminium and many more. They have the specification such as diameter, length and the finish of the product is seen. High tensile nut bolt specification includes various sections like the standard used, class, grade, size and finish. These are the one which are used in industries like solar, wind, thermal and hydro energy.
Standards | DIN EN ISO 4014 & 4017 DIN 931 / 933 & IS 1364 / IS 1363, 5785, 5A325, GB5782, A6914, 5783, 786 |
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Size Range | Diameter M 20 to 100 mm Inch 3/4" to 3.1/2" |
Grades | Grade 8.8, Grade 10.9, DIN 933 Grade 12.9 |
Finish | Zinc plated / Plain / Hot dip galvanised |
Main Forms | Hex, Unf/ Unc, U Bolts |
Grades |
|
Industry Standards | ASTM, IS, JIS, ASTM, GB5783, DIN, ANSI, AS, BSW, ASME, EN, DIN, DIN931, BS, ISO4017 |
Metric Size | M2 – M100, 6 to 500mm Length |
F568 Nuts and Bolts
ASTM F568 High Tensile Lag Bolts
SF568 High Tensile Spring Washers
ASTM F568 Spring Pin
ASME SF568 HT Hex Bolts
ASME SF568 High Tensile Threaded Rod
High Tensile Hex Head Bolts
DIN 933 Grade 12.9 Socket Head Cap Screws
HT Carriage Bolts
ASTM F568 HT Studs
DIN 933 Grade 12.9 Self Tapping Screws
High Tensile Hex Nuts
ASTM F568 High Tensile Exhaust Studs
ASME SF568 HT Cap Screws
F568 Anchor Bolt
ASME SF568 High Tensile Washers
SF568 High Tensile Nuts & Washers
ASTM F568 HT Flat Washers
HT Threaded Stud
ASTM F568 Square U Bolts
Grade/ Marked Symbol | Proof Load (MPa) | Min. Yield Stress (MPa) | Min. Tensile Stress (MPa) |
8.8 | 580 | 640 | 800 |
600 | 660 | 830 | |
10.9 | 830 | 940 | 1040 |
12.9 | 970 | 1100 | 1220 |
Grade | Technical Description | Metric Size |
8.8 | quenched and tempered, medium carbon steel material | 16- 72mm |
10.9 | quenched and tempered, alloy steel material | 5 - 100mm |
12.9 | quenched and tempered, alloy steel material | 1.6 - 100mm |
DIA |
M16 |
M20 |
M22 |
M24 |
M27 |
M30 |
M36 |
HARDNESS FOR PL. WASHER |
35 TO 45 HRC |
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Hardness for Hot Dip Galvd washer |
26 HRC |
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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 |
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Tolerance for OD Minus(-) |
1.6 |
1.9 |
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Tolerance for ID Plus(+) |
0.43 |
0.52 |
0.62 |
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 |
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Tolerance for ID Plus(+) |
0.27 |
0.33 |
0.52 |
0.62 |
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Tolerance for thickness + or – |
0.30 |
0.60 |
DIA |
M4 |
M5 |
M8 |
M10 |
M14 |
M16 |
M20 |
M22 |
M24 |
M30 |
M33 |
M36 |
M39 |
M42 |
M45 |
M48 |
M52 |
Pitch |
0.7 |
0.8 |
1.25 |
1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
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Grade A upto length |
40 |
50 |
80 |
100 |
140 |
150 |
Grade A not applicable to these dia’s |
||||||||||
Head Across Flat (S) Nom = Max Min Grade A Grade B |
7 |
8 |
13 |
16 |
21 |
24 |
30 |
34 |
36 |
46 |
50 |
55 |
60 |
65 |
70 |
75 |
80 |
6.78 |
7.78 |
12.73 |
15.73 |
20.67 |
23.67 |
29.67 |
33.38 |
35.38 |
Grade A not applicable to these dia’s |
||||||||
6.64 |
7.64 |
12.57 |
15.57 |
20.16 |
23.16 |
29.16 |
33 |
35 |
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 |
5.3 |
6.4 |
8.8 |
10 |
12.5 |
14 |
15 |
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 |
14.38 |
17.77 |
23.36 |
26.75 |
33.53 |
37.72 |
39.98 |
Grade A not applicable to these dia’s |
|||||||
7.5 |
8.63 |
14.2 |
17.59 |
22.78 |
26.17 |
32.95 |
37.29 |
39.55 |
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 |
22 |
26 |
34 |
38 |
46 |
50 |
54 |
66 |
Not specified as full thread recommended |
||||||
20 |
22 |
28 |
32 |
40 |
44 |
52 |
56 |
60 |
72 |
78 |
84 |
90 |
96 |
102 |
108 |
116 |
|
33 |
35 |
41 |
45 |
53 |
57 |
65 |
69 |
73 |
85 |
91 |
97 |
103 |
109 |
115 |
121 |
129 |
|
Major Dia at thread (min) |
3.838 |
4.826 |
7.76 |
9.732 |
13.682 |
15.682 |
19.623 |
21.623 |
23.577 |
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 |
7.972 |
9.968 |
13.962 |
15.962 |
19.958 |
21.958 |
23.952 |
29.947 |
32.947 |
35.94 |
38.94 |
41.937 |
44.937 |
47.929 |
51.929 |
DIA |
M6 |
M5 |
M8 |
M10 |
M18 |
M39 |
M52 |
M24 |
M48 |
M14 |
M16 |
M20 |
M27 |
M30 |
M36 |
M45 |
|
Pitch |
1 |
0.8 |
1.25 |
1.5 |
2.5 |
4 |
5 |
3 |
5 |
2 |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
|
Across Flat (S) Max Min |
10 |
8 |
13 |
16 |
27 |
60 |
80 |
36 |
75 |
21 |
24 |
30 |
41 |
46 |
55 |
70 |
|
9.78 |
7.78 |
12.73 |
15.73 |
26.16 |
58.8 |
78.1 |
35 |
73.1 |
20.67 |
23.67 |
29.16 |
40 |
45 |
53.8 |
68.1 |
||
Thickness (M) Max Min |
5.2 |
4.7 |
6.8 |
8.4 |
15.8 |
33.4 |
42 |
21.5 |
38 |
12.8 |
14.8 |
18 |
23.8 |
25.6 |
31 |
36 |
|
4.9 |
4.4 |
6.44 |
8.04 |
15.1 |
31.8 |
40.4 |
20.2 |
36.4 |
12.1 |
14.1 |
16.9 |
22.5 |
24.3 |
29.4 |
34.4 |
||
Across corners (E) Min |
11.05 |
8.79 |
14.38 |
17.77 |
29.56 |
66.44 |
88.25 |
39.55 |
82.6 |
23.35 |
26.75 |
32.95 |
45.2 |
50.85 |
60.79 |
76.95 |
|
Minor Dia at thread (min) |
4.917 |
4.134 |
6.647 |
8.376 |
15.294 |
34.67 |
46.587 |
20.752 |
42.587 |
11.835 |
13.835 |
17.294 |
23.752 |
26.211 |
31.67 |
40.129 |
|
Minor Dia at thread (max) |
5.153 |
4.334 |
6.912 |
8.676 |
15.744 |
35.27 |
47.297 |
21.252 |
43.297 |
12.210 |
14.210 |
17.774 |
24.252 |
26.771 |
32.27 |
40.799 |
DIA |
M4 |
M6 |
M8 |
M10 |
M12 |
M16 |
M18 |
M20 |
M24 |
M30 |
M33 |
M39 |
M45 |
M48 |
Pitch |
0.7 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2.5 |
2.5 |
3 |
3.5 |
3.5 |
4 |
4.5 |
5 |
Grade A upto length |
40 |
60 |
80 |
100 |
120 |
150 |
Grade A not applicable to these dia’s |
|||||||
Head Across Flat (S) Max Min(Grade A) Min (Grade B) |
7 |
10 |
13 |
16 |
18 |
24 |
27 |
30 |
36 |
46 |
50 |
60 |
70 |
75 |
6.78 |
9.78 |
12.73 |
15.73 |
17.73 |
23.67 |
26.67 |
29.67 |
35.38 |
Grade A not applicable to these dia’s |
|||||
6.64 |
9.64 |
12.57 |
15.57 |
17.57 |
23.16 |
26.16 |
29.16 |
35 |
45 |
49 |
58.8 |
68.1 |
73.1 |
|
Head Thickness (K) Tol + or – Grade A
Grade B |
2.8 |
4 |
5.3 |
6.4 |
7.5 |
10 |
11.5 |
12.5 |
15 |
18.7 |
21 |
25 |
28 |
30 |
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 |
||||||||||
Across corners e Min Grade A
Min Grade B |
7.66 |
11.05 |
14.38 |
17.77 |
20.03 |
26.75 |
30.14 |
33.53 |
39.98 |
Grade A not applicable to these dia’s |
||||
7.5 |
10.89 |
14.2 |
17.59 |
19.85 |
26.17 |
29.56 |
32.95 |
39.55 |
50.85 |
55.37 |
66.44 |
76.95 |
82.6 |
|
Major Dia at thread (min) |
3.838 |
5.794 |
7.76 |
9.732 |
11.701 |
15.682 |
17.623 |
19.623 |
23.577 |
29.522 |
32.522 |
38.465 |
44.437 |
47.399 |
Major Dia at thread (max) |
3.978 |
5.974 |
7.972 |
9.968 |
11.966 |
15.962 |
17.958 |
19.958 |
23.952 |
29.947 |
32.947 |
38.94 |
44.937 |
47.929 |
Price List | Price Per Pcs. |
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High Tensile Hex head bolts | USD $6.05 |
High Tensile Machine bolts | USD $5.10 |
High Tensile Screws | USD $3.70 |
High Tensile Socket Head Cap Screw | USD $3.10 |
High Tensile Allen bolts | USD $4.25 |
High Tensile Dowel Pins | USD $1.20 |
High Tensile Nuts | USD $1.45 |
High Tensile Washer | USD $1.00 |
High Tensile Flat Head Bolts | High Tensile Header Bolts |
Allen Head Bolts | DIN 933 Grade 12.9 Toggle Bolts |
High Tensile Gutter Bolts | High Tensile Hurricane Bolts |
High Tensile Deck Bolts | High Strength Bolts |
Button Head Bolts | High Tensile Wheel Nuts |
High Tensile Exhaust Bolts | High Tensile Automotive Bolts |
High Tensile Fasteners & Bolts | Hook Bolts |
DIN 933 Grade 12.9 Bolts | High Tensile Cap Head Bolts |
High Tensile Coach Bolts | Weld Nuts |
High Tensile Barrel Nuts | High Tensile Rivet Nuts |
ASTM F568 High Tensile Square Bolts | ASME SF568 High Tensile U Bolts |
F568 High Tensile Flange Bolts | HT Hex Bolts |
F568 HT Hex Nuts | High Tensile Dome Nut |
High tensile strength wood screws | High Tensile Coach Screws |
High tensile threaded rod | High strength stud bolts |
F568 High Tensile Spring Washer | High Tensile Lock Washer |
Class 8.8: Medium carbon steel, quenched and tempered |
Class 10.9: Alloy steel, quenched and tempered |
Class 12.9: Alloy steel, quenched and tempered |