Material
Strengths (Part 1)
Material strength for headed fasteners and threaded fasteners from Elgin Fasteners Group, as well as other industrial fasteners, is listed below by grade, type and class and separated into 60,000 psi, 75,000 psi and 120,000 psi.
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Material Strength - 60,000 psi
J82 60M or Grade 1 or Class 4.8
|
|
Size |
Dia. |
Stress
Area |
Tensile
Str.
Lbs |
Proof
Load Str.
Lbs |
Dry
Parts
K=.2 |
Lubricated
Parts K=.15 |
|
Min
Break Str. (in/lbs) |
Max
Torque Value (in/lbs) |
Min
Break Str, (in/lbs) |
Max
Torque
Value (in/lbs) |
|
8-32 |
0.1640 |
0.01400 |
840 |
462 |
20.7 |
11.4 |
15.5 |
8.5 |
|
10-24 |
0.1900 |
0.01750 |
1,050 |
578 |
29.9 |
16.5 |
22.4 |
12.3 |
|
10-32 |
0.1900 |
0.02000 |
1,200 |
660 |
34.2 |
18.8 |
25.7 |
14.1 |
|
1/4-20 |
0.2500 |
0.03180 |
1,908 |
1,049 |
71.6 |
39.4 |
53.7 |
29.5 |
|
1/4-28 |
0.2500 |
0.03637 |
2,182 |
1,200 |
81.8 |
45.0 |
61.4 |
33.8 |
|
5/16-18 |
0.3125 |
0.05240 |
3,144 |
1,729 |
147.4 |
81.1 |
110.5 |
60.8 |
|
5/16-24 |
0.3125 |
0.05800 |
3,480 |
1,914 |
163.1 |
89.7 |
122.3 |
67.3 |
|
3/8-16 |
0.3750 |
0.07750 |
4,650 |
2,558 |
261.6 |
143.9 |
196.2 |
107.9 |
|
3/8-24 |
0.3750 |
0.08780 |
5,268 |
2,897 |
296.3 |
163.0 |
222.2 |
122.2 |
|
7/16-14 |
0.4375 |
0.10630 |
6,378 |
3,508 |
418.6 |
230.2 |
313.9 |
172.7 |
|
7/16-20 |
0.4375 |
0.11870 |
7,122 |
3,917 |
467.4 |
257.1 |
350.5 |
192.8 |
|
M3.5x0.6 |
0.1380 |
0.01051 |
631 |
347 |
13.1 |
7.2 |
9.8 |
5.4 |
|
M4x0.7 |
0.1575 |
0.01349 |
809 |
445 |
19.1 |
10.5 |
14.3 |
7.9 |
|
M5x0.8 |
0.1970 |
0.02201 |
1,321 |
726 |
39.0 |
21.5 |
29.3 |
16.1 |
|
M6x1.0 |
0.2360 |
0.03116 |
1,869 |
1,028 |
66.2 |
36.4 |
49.6 |
27.3 |
|
M7x1.0 |
0.2755 |
0.04473 |
2,684 |
1,476 |
110.9 |
61.0 |
83.2 |
45.8 |
|
M8x1.25 |
0.3150 |
0.05673 |
3,404 |
1,872 |
160.8 |
88.5 |
120.6 |
66.3 |
|
M10x1.5 |
0.3940 |
0.08990 |
5,394 |
2,967 |
318.8 |
175.3 |
239.1 |
131.5 |
|
M12x1.75 |
0.4720 |
0.13067 |
7,840 |
4,312 |
555.1 |
305.3 |
416.3 |
229.0 |
|
Material Strength - 75,000 psi
Grade 2 or Class 5.8
|
|
Size |
Dia. |
Stress
Area |
Tensile
Str.
Lbs |
Proof
Load Str.
Lbs |
Dry
Parts
K=.2 |
Lubricated
Parts K=.15 |
|
Min
Break Str. (in/lbs) |
Max
Torque Value (in/lbs) |
Min
Break Str, (in/lbs) |
Max
Torque
Value (in/lbs) |
|
8.32 |
0.1640 |
0.01400 |
1,050 |
788 |
25.8 |
19.4 |
19.4 |
14.5 |
10-24 |
0.1900 |
0.01750 |
1,313 |
984 |
37.4 |
28.1 |
28.1 |
21.0 |
10-32 |
0.1900 |
0.02000 |
1,500 |
1,125 |
42.8 |
32.1 |
32.1 |
24.0 |
1/4-20 |
0.2500 |
0.03180 |
2,385 |
1,789 |
89.4 |
67.1 |
67.1 |
50.3 |
1/4-28 |
0.2500 |
0.03637 |
2,728 |
2,046 |
102.3 |
76.7 |
76.7 |
57.5 |
5/16-18 |
0.3125 |
0.05240 |
3,930 |
2,948 |
184.2 |
138.2 |
138.2 |
103.6 |
5/16-24 |
0.3125 |
0.05800 |
4,350 |
3,263 |
203.9 |
152.9 |
152.9 |
114.7 |
3/8-16 |
0.3750 |
0.07750 |
5,813 |
4,359 |
327.0 |
245.2 |
245.2 |
183.9 |
3/8-24 |
0.3750 |
0.08780 |
6,585 |
4,939 |
370.4 |
277.8 |
277.8 |
208.4 |
7/16-14 |
0.4375 |
0.10630 |
7,973 |
5,979 |
523.2 |
392.4 |
392.4 |
294.3 |
7/16-20 |
0.4375 |
0.11870 |
8,903 |
6,677 |
584.2 |
438.2 |
438.2 |
328.6 |
M3.5x0.6 |
0.1380 |
0.01051 |
788 |
591 |
16.3 |
12.2 |
12.2 |
9.2 |
M4x0.7 |
0.1575 |
0.01349 |
1,012 |
759 |
23.9 |
17.9 |
17.9 |
13.4 |
M5x0.8 |
0.1970 |
0.02201 |
1,651 |
1,238 |
48.8 |
36.6 |
36.6 |
27.4 |
M6x1.0 |
0.2360 |
0.03116 |
2,337 |
1,752 |
82.7 |
62.0 |
62.0 |
46.5 |
M7x1.0 |
0.2755 |
0.04473 |
3,355 |
2,516 |
138.6 |
104.0 |
104.0 |
78.0 |
M8x1.25 |
0.3150 |
0.05673 |
4,255 |
3,191 |
201.0 |
150.8 |
150.8 |
113.1 |
M10x1.5 |
0.3940 |
0.08990 |
6,743 |
5,057 |
398.5 |
298.9 |
298.9 |
224.1 |
M12x1.75 |
0.4720 |
0.13067 |
9,800 |
7,350 |
693.9 |
520.4 |
520.4 |
390.3 |
|
Material
Strength - 120,000 psi
J82 120M or Grade 5 or Grade 5.1 or J81
or J1237 Type 2 or Class 8.8
|
|
Size |
Dia. |
Stress
Area |
Tensile
Str.
Lbs |
Proof
Load Str.
Lbs |
Dry
Parts
K=.2 |
Lubricated
Parts K=.15 |
|
Min
Break Str. (in/lbs) |
Max
Torque Value (in/lbs) |
Min
Break Str, (in/lbs) |
Max
Torque
Value (in/lbs) |
8-32 |
0.1640 |
0.01400 |
1,680 |
1,176 |
41.3 |
28.9 |
31.0 |
21.7 |
10-24 |
0.1900 |
0.01750 |
2,100 |
1,470 |
59.9 |
41.9 |
44.9 |
31.4 |
10-32 |
0.1900 |
0.02000 |
2,400 |
1,680 |
68.4 |
47.9 |
51.3 |
35.9 |
1/4-20 |
0.2500 |
0.03180 |
3,816 |
2,671 |
143.1 |
100.2 |
107.3 |
75.1 |
1/4-28 |
0.2500 |
0.03637 |
4,364 |
3,055 |
163.7 |
114.6 |
122.7 |
85.9 |
5/16-18 |
0.3125 |
0.05240 |
6,288 |
4,402 |
294.8 |
206.3 |
221.1 |
154.7 |
5/16-24 |
0.3125 |
0.05800 |
6,960 |
4,872 |
326.3 |
228.4 |
244.7 |
171.3 |
3/8-16 |
0.3750 |
0.07750 |
,9300 |
6,510 |
523.1 |
366.2 |
392.3 |
274.6 |
3/8-24 |
0.3750 |
0.08780 |
10,536 |
7,375 |
592.7 |
414.9 |
444.5 |
311.1 |
7/16-14 |
0.4375 |
0.10630 |
12,756 |
8,929 |
837.1 |
586.0 |
627.8 |
439.5 |
7/16-20 |
0.4375 |
0.11870 |
14,244 |
9,971 |
934.8 |
654.3 |
701.1 |
490.8 |
M3.5x0.6 |
0.1380 |
0.01051 |
1,261 |
883 |
26.1 |
18.3 |
19.6 |
13.7 |
M4x0.7 |
0.1575 |
0.01349 |
1,619 |
1,133 |
38.2 |
26.8 |
28.7 |
20.1 |
M5x0.8 |
0.1970 |
0.02201 |
2,641 |
1,849 |
78.0 |
54.6 |
58.5 |
41.0 |
M6x1.0 |
0.2360 |
0.03116 |
3,739 |
2,617 |
132.3 |
92.6 |
99.3 |
69.5 |
M7x1.0 |
0.2755 |
0.04473 |
5,368 |
3,758 |
221.8 |
155.3 |
166.4 |
116.5 |
M8x1.25 |
0.3150 |
0.05673 |
6,808 |
4,765 |
321.7 |
225.2 |
241.2 |
168.9 |
M10x1.5 |
0.3940 |
0.08990 |
10,788 |
7,552 |
637.6 |
446.3 |
478.2 |
334.7 |
M12x1.75 |
0.4720 |
0.13067 |
15,680 |
10,976 |
1110.2 |
777.1 |
832.6 |
582.8 |
Go
to Material Strength (Part 2)
Torque Tensioning
Screw Point Types
Pilot Hole Sizes
Bolt & Screw Head Types
Weights per Thousand
Unified External Screw Threads
Rod & Bolt Diameters
Metric Conversions
Hole Sizes for Die Casting
Material Strength
Drive Tool Sizes
Hardness Conversions
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