High Tensile Grade 12.9 Hex Head Bolts
DIN 912 Class 12.9 Socket Head Cap Screw Manufacturer In India
Class 12.9 Hex Nut
Class 12.9 Threaded Bar
High Tensile Grade 12.9 Stud Bolts
Grade 12.9 Hex Head Bolts
Grade 12.9 Washers
Table of contents
12.9 Metric Allen Bolt are High tensile steel Fasteners manufactured with minimum 1100MPa yield strength.
Grade 12.9 Bolt Chemical Composition
| Carbon Steel 12.9 | C | P | S | B |
|---|---|---|---|---|
| 0.28-0.5 | 0.025 | 0.025 | 0.003 |
Class 12.9 Threaded Bar Mechanical Properties
| Nominal thread diameter size range [millimeter] | Proof strength [MPa] | Yield strength (minimum) [MPa] | Tensile strength (minimum) [MPa] | Hardness [Rockwell] |
|---|---|---|---|---|
| 1.6–100 | 970 | 1100 | 1220 | C39–44 |
Class 12.9 Hex Nut Size Chart
|
|
|||||
| Class and Material |
Nominal Size Range (millimeter) |
Mechanical Properties | |||
|---|---|---|---|---|---|
| Proof Load (MPa) |
Minimum Yield Strength (MPa) |
Minimum Tensile Strength (MPa) |
|||
| Class 12.9 Alloy steel, quenched and tempered | 1.6mm - 100mm | 970 |
1100 |
1220 |
|
Grade 12.9 Stud Bolts Specification List
| Grade 12.9 Bolts Grades | DIN 933 Gr. 12.9 |
|---|---|
| Grade 12.9 Bolts Standard | ASTM F568 And ASME SF568 |
| Grade 12.9 Bolts Size | Dia 1.6mm to 100 millimeter Inch 3/4" to 3.1/2" |
| Grade 12.9 Bolts finish | Hot dip galvanised / Zinc plated / Plain |
Grade 12.9 Washers Dimensions Chart
| Washers Thread | Washers Weight per metre | Washers Strength | |||
|---|---|---|---|---|---|
| Washers Class 70 | Washers Class 80 | ||||
| 0.2% proof | UTS | 0.2% proof | UTS | ||
| Kg/m | kN | kN | kN | kN | |
| M12 | 0.72 | 41.0 | 64.0 | 54.0 | 73.0 |
| M16 | 1.31 | 70.7 | 109.9 | 94.2 | 125.6 |
| M20 | 2.05 | 110.3 | 171.5 | 147.0 | 196.0 |
| M24 | 2.96 | 158.9 | 247.1 | 211.8 | 282.4 |
| M27 | 3.83 | 206.6 | 321.3 | 275.4 | 367.2 |
| M30 | 4.70 | 252.6 | 392.7 | 336.6 | 448.8 |
| M33 | 5.78 | 312.3 | 485.8 | 416.4 | 555.2 |
| M36 | 6.84 | 367.7 | 571.9 | 490.2 | 653.6 |
| M39 | 8.14 | 439.2 | 683.2 | 585.6 | 780.8 |
| M42 | 9.38 | 504.5 | 784.7 | 672.6 | 896.6 |
| M45 | 10.90 | 587.7 | 914.2 | 783.6 | 1044.8 |
| M48 | 12.32 | 662.9 | 1031.1 | 883.8 | 1178.4 |
| M52 | 14.65 | 791.1 | 1230.6 | 1054.8 | 1406.4 |
Best price of M12 12.9 Hex Bolt in Mumbai as per BS 3692.
Grade 12.9 Bolt Shear Strength
|
Diameter
millimeter |
Tensile
Area millimeter2 |
Tension
Capacity Pt @ 420 N/millimeter2 |
Shear
Capacity @ 280 N/millimeter2 |
Bolt Grade = 12.9
|
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|
Bolts Bearing Capacity in kN for End Distance >= 2d
Bolt Bearing Strength = 876 N/millimeter2 Ply Bearing Strength: = 250 N/millimeter2 |
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|
Bearing (Ply) Thickness Passed Through, millimeter
|
|||||||||||||||
|
Shank
kN |
Threads
kN |
Single
kN |
Double
kN |
5
millimeter |
6
millimeter |
7
millimeter |
8
millimeter |
9
millimeter |
10
millimeter |
12.5
millimeter |
15
millimeter |
20
millimeter |
25
millimeter |
||
|
M 1.6
|
1.27
|
0.844
|
0.533
|
0.563
|
1.126
|
2.0
|
2.4
|
2.8
|
3.2
|
3.6
|
4.0
|
5.0
|
6.0
|
8.0
|
10.0
|
|
M 2
|
2.07
|
1.32
|
0.869
|
0.88
|
1.76
|
2.5
|
3.0
|
3.5
|
4.0
|
4.5
|
5.0
|
6.3
|
7.5
|
10.0
|
12.5
|
|
M 2.5
|
3.39
|
2.06
|
1.42
|
1.37
|
2.74
|
3.1
|
3.8
|
4.4
|
5.0
|
5.6
|
6.3
|
7.8
|
9.4
|
12.5
|
15.6
|
|
M 3
|
5.03
|
2.97
|
2.11
|
1.98
|
3.96
|
3.8
|
4.5
|
5.3
|
6.0
|
6.8
|
7.5
|
9.4
|
11.3
|
15.0
|
18.8
|
|
M 4
|
8.78
|
5.28
|
3.69
|
3.52
|
7.04
|
5.0
|
6.0
|
7.0
|
8.0
|
9.0
|
10.0
|
12.5
|
15.0
|
20.0
|
25.0
|
|
M 5
|
14.2
|
8.25
|
5.96
|
5.5
|
11
|
6.3
|
7.5
|
8.8
|
10.0
|
11.3
|
12.5
|
15.6
|
18.8
|
25.0
|
31.3
|
|
M 6
|
20.1
|
11.9
|
8.44
|
7.92
|
15.84
|
7.5
|
9.0
|
10.5
|
12.0
|
13.5
|
15.0
|
18.8
|
22.5
|
30.0
|
37.5
|
|
M 8
|
36.6
|
21.1
|
15.4
|
14.1
|
28.2
|
10.0
|
12.0
|
14.0
|
16.0
|
18.0
|
20.0
|
25.0
|
30.0
|
40.0
|
50.0
|
|
M 10
|
58
|
33
|
24.4
|
22
|
44
|
12.5
|
15.0
|
17.5
|
20.0
|
22.5
|
25.0
|
31.3
|
37.5
|
50.0
|
62.5
|
|
M 12
|
84.3
|
47.5
|
35.4
|
31.7
|
63.4
|
15.0
|
18.0
|
21.0
|
24.0
|
27.0
|
30.0
|
37.5
|
45.0
|
60.0
|
75.0
|
|
(M 14)
|
115
|
64.7
|
48.3
|
43.1
|
86.2
|
17.5
|
21.0
|
24.5
|
28.0
|
31.5
|
35.0
|
43.8
|
52.5
|
70.0
|
87.5
|
|
M 16
|
157
|
84.4
|
65.9
|
56.3
|
112.6
|
20.0
|
24.0
|
28.0
|
32.0
|
36.0
|
40.0
|
50.0
|
60.0
|
80.0
|
100.0
|
|
(M 18)
|
192
|
106.9
|
80.6
|
71.3
|
142.6
|
22.5
|
27.0
|
31.5
|
36.0
|
40.5
|
45.0
|
56.3
|
67.5
|
90.0
|
112.5
|
|
M 20
|
245
|
131.9
|
102.9
|
88
|
176
|
25.0
|
30.0
|
35.0
|
40.0
|
45.0
|
50.0
|
62.5
|
75.0
|
100.0
|
125.0
|
|
(M 22)
|
303
|
159.7
|
127.3
|
106.4
|
212.8
|
27.5
|
33.0
|
38.5
|
44.0
|
49.5
|
55.0
|
68.8
|
82.5
|
110.0
|
137.5
|
|
M 24
|
353
|
190
|
148.3
|
126.7
|
253.4
|
30.0
|
36.0
|
42.0
|
48.0
|
54.0
|
60.0
|
75.0
|
90.0
|
120.0
|
150.0
|
|
(M 27)
|
459
|
240.5
|
192.8
|
160.3
|
320.6
|
33.8
|
40.5
|
47.3
|
54.0
|
60.8
|
67.5
|
84.4
|
101.3
|
135.0
|
168.8
|
|
M 30
|
561
|
296.9
|
235.6
|
197.9
|
395.8
|
37.5
|
45.0
|
52.5
|
60.0
|
67.5
|
75.0
|
93.8
|
112.5
|
150.0
|
187.5
|
|
(M 33)
|
694
|
359.2
|
291.5
|
239.5
|
479
|
41.3
|
49.5
|
57.8
|
66.0
|
74.3
|
82.5
|
103.1
|
123.8
|
165.0
|
206.3
|
|
M 36
|
817
|
427.5
|
343.1
|
285
|
570
|
45.0
|
54.0
|
63.0
|
72.0
|
81.0
|
90.0
|
112.5
|
135.0
|
180.0
|
225.0
|
|
(M 39)
|
976
|
501.7
|
409.9
|
334.5
|
669
|
48.8
|
58.5
|
68.3
|
78.0
|
87.8
|
97.5
|
121.9
|
146.3
|
195.0
|
243.8
|
|
M 42
|
1120
|
581.9
|
470.4
|
387.9
|
775.8
|
52.5
|
63.0
|
73.5
|
84.0
|
94.5
|
105.0
|
131.3
|
157.5
|
210.0
|
262.5
|
|
(M 45)
|
1300
|
668
|
546
|
445.3
|
890.6
|
56.3
|
67.5
|
78.8
|
90.0
|
101.3
|
112.5
|
140.6
|
168.8
|
225.0
|
281.3
|
|
M 48
|
1470
|
760
|
617.4
|
506.7
|
1013.4
|
60.0
|
72.0
|
84.0
|
96.0
|
108.0
|
120.0
|
150.0
|
180.0
|
240.0
|
300.0
|
|
(M 52)
|
1760
|
892
|
739.2
|
594.6
|
1189.2
|
65.0
|
78.0
|
91.0
|
104.0
|
117.0
|
130.0
|
162.5
|
195.0
|
260.0
|
325.0
|
|
M 56
|
2030
|
1034.5
|
852.6
|
689.6
|
1379.2
|
70.0
|
84.0
|
98.0
|
112.0
|
126.0
|
140.0
|
175.0
|
210.0
|
280.0
|
350.0
|
|
(M 60)
|
2360
|
1187.5
|
991.2
|
791.7
|
1583.4
|
75.0
|
90.0
|
105.0
|
120.0
|
135.0
|
150.0
|
187.5
|
225.0
|
300.0
|
375.0
|
|
M 64
|
2680
|
1351.1
|
1125.6
|
900.8
|
1801.6
|
80.0
|
96.0
|
112.0
|
128.0
|
144.0
|
160.0
|
200.0
|
240.0
|
320.0
|
400.0
|
|
(M 68)
|
3060
|
1525.3
|
1285.2
|
1016.9
|
2033.8
|
85.0
|
102.0
|
119.0
|
136.0
|
153.0
|
170.0
|
212.5
|
255.0
|
340.0
|
425.0
|
View 12.9 grade alloy steel bolts hardness, strength and price list ex Mumbai.
Grade 12.9 Bolt Material Equivalent
| Diameter Ranges | Grade Of Metric | Approx. ASTM Equivalent | Description | Tensile, minimum | Yield, minimum | ||
|---|---|---|---|---|---|---|---|
| Mpa | ksi | Mpa | ksi | ||||
| All | 4.6 | A307A | Low or medium carbon steel (cs) | 400 | 58 | 240 | 35 |
| through 1" (M24) | 5.8 | - | Cold worked low or medium carbon steel | 520 | 75 | 420 | 61 |
| through 1" (M24) | 8.8 | A449 | Heat treated medium carbon steel | 830 | 120 | 660 | 96 |
| above 1" (M24) | 8.8 | A193B7/A354BC or F1554G105 | Heat treated medium carbon steel | 830 | 120 | 660 | 96 |
| through 1-1/2" (M36) | 8.8.3 | A325 Type 3 / A449 Type 3 | Heat treated medium carbon weathering steel | 830 | 120 | 660 | 96 |
| All | 10.9 | A490/A354BD | Heat treated medium carbon alloy steel | 1040 | 151 | 940 | 136 |
| through 1-1/2" (M36) | 10.9.3 | A490 Type 3 | Heat treated medium carbon alloy weathering steel | 1040 | 151 | 940 | 136 |
| All | 12.9 | A574 | Heat treated alloy steel | 1220 | 177 | 1100 | 160 |
Manufacturer and supplier of ASTM F568 grade 12.9 Socket Shoulder Screw as per BS4168.
12.9 Grade Bolt Torque Spec
| Max. Recommended Tightening Torques | ||||||||
| Metric Course Pitch | Gr. 12.9 Plated | Metric Course Pitch | Gr. 10.9 Plated | Metric Course Pitch | Gr. 8.8 Plated | |||
| Nm | ft-lb | Nm | ft-lb | Nm | ft-lb | |||
| M6 | 14 | 10 | M6 | 12 | 9 | M6 | 8 | 6 |
| M8 | 34 | 25 | M8 | 29 | 21 | M8 | 20 | 15 |
| M10 | 68 | 50 | M10 | 57 | 42 | M10 | 40 | 30 |
| M12 | 119 | 88 | M12 | 99 | 73 | M12 | 70 | 52 |
| (M14) | 189 | 139 | (M14) | 158 | 116 | (M14) | 112 | 83 |
| M16 | 295 | 218 | M16 | 246 | 181 | M16 | 175 | 129 |
| (M18) | 406 | 299 | (M18) | 338 | 249 | (M18) | 241 | 177 |
| M20 | 576 | 424 | M20 | 480 | 354 | M20 | 341 | 252 |
| (M22) | 783 | 577 | (M22) | 652 | 481 | (M22) | 464 | 342 |
| M24 | 995 | 734 | M24 | 829 | 612 | M24 | 590 | 435 |
| (M27) | 1456 | 1074 | (M27) | 1213 | 895 | (M27) | 863 | 636 |
| M30 | 1977 | 1458 | M30 | 1647 | 1215 | M30 | 1171 | 864 |
| (M33) | 2690 | 1984 | (M33) | 2242 | 1653 | (M33) | 1594 | 1176 |
| M36 | 3454 | 2548 | M36 | 2879 | 2123 | M36 | 2047 | 1510 |
| (M39) | 4471 | 3298 | (M39) | 3726 | 2748 | (M39) | 2649 | 1954 |
| M42 | 5525 | 4075 | M42 | 4604 | 3396 | M42 | 3274 | 2415 |
| (M45) | 6871 | 5068 | (M45) | 5726 | 4223 | (M45) | 4072 | 3003 |
| M48 | 8287 | 6113 | M48 | 6906 | 5094 | M48 | 4911 | 3622 |
| M52 | 10749 | 7928 | M52 | 8958 | 6607 | M52 | 6370 | 4698 |