REPUTE STEEL ENGINEERING COMPANY | Manufacturer & Exporter in India

The Versatility and Appeal of Copper Bolts and Nuts: Durable, Aesthetic, and Sustainable Fasteners


Copper fasteners, including Copper Hex Bolts, 110 Copper Threaded Rods, and Copper Machine and Carriage Bolts, are known for their exceptional conductivity to both heat and electricity. This makes them an ideal choice for use in electronics and electrical applications. Additionally, 110 Copper Threaded Rods exhibit good bacteriostatic properties, making copper fasteners a hygienic option for industries such as pharmaceuticals and food and beverage processing.


Furthermore, Copper Bolts, Nuts, and Washers are ductile, malleable, and fully recyclable. Even defective fasteners can be remelted and repurposed, adding to their sustainability. These qualities make copper fasteners a preferred choice for applications requiring reliability, durability, and environmental friendliness.


For high-quality, competitively priced copper fasteners, Repute Steel & Engineering Company is one of the most trusted suppliers, offering a wide range of products, including Copper Hex Bolts and Nuts, Copper Threaded Rods, and more.


Copper Bolt - Unit 100 Nos & Each (Casting for Wire Additional by 50%)


Size Length Dia Price (₹)
1/2 3/4 1" ₹270.00
1 1/4" 1 1/2" 2" ₹342.75
2 1/2" 3" 4" ₹372.75
3/16 ₹490.50 ₹516.75 ₹636.00

Copper Bolt MM Size Casting (For Wire Additional by 50%)


Dia Length Size Price (₹)
M-5 10" 12" ₹247.50
M-6 15" 20" ₹357.00
M-8 25" 30" ₹820.50
M-10 35" 40" ₹1896.00
M-12 45" 50" ₹2703.75
M-16 60" 75" ₹6482.25

Copper Bolts Dimensions


NOMINAL SIZE (D)
BODY DIAMETER
HEAD THICKNEASTM
ACROASTM THE FLATS
ACROASTM CORNERS
D (MAX)
D (MIN)
H (MAX)
H (MIN)
F (MAX)
F (MIN)
C (MAX)
C (MIN)
m10
10.00
9.78
6.63
6.17
17.00
15.73
18.48
17.77
m12
12.00
11.73
7.76
4.24
19.00
17.73
20.78
20.03
m14
14.00
13.73
9.09
8.51
22.00
20.67
24.25
23.35
m16
16.00
15.73
10.32
9.68
24.00
23.67
27.71
26.75
m20
20.00
19.67
12.88
12.12
30.00
29.16
34.64
32.95
m24
24.00
23.67
15.44
14.56
36.00
35.00
41.57
39.55
m30
30.00
29.67
19.48
17.92
46.00
45.00
53.12
50.85
m36
36.00
35.61
23.38
21.63
55.00
53.80
63.51
60.79
m42
42.00
41.38
26.97
25.03
65.00
62.90
75.06
71.71
m48
48.00
47.38
31.07
28.93
75.00
72.60
86.60
82.76
m56
56.00
55.26
36.2
33.80
85.00
82.20
98.15
93.71
m64
64.00
63.26
41.32
38.68
95.00
91.80
109.70
104.65
m72
72.00
71.26
46.45
43.55
105.00
101.40
121.24
115.60
m80
80.00
79.26
51.58
48.42
115.00
111.00
132.72
126.54
m90
90.00
89.13
57.74
54.26
130.00
125.50
150.11
143.07
m100
90.00
99.13
63.9
60.10
145.00

Copper Nuts Dimensions


Nominal Size or Basic Major Thread Diameter
F
G
H
Width
Across Flats
Width
Across Corners
Thickness
Basic
Max
Min
Max
Min
Basic
Max
Min
1/4
.2500
7/16
.438
.428
.505
.488
7/32
.226
.212
5/16
.3125
1/2
.500
.489
.577
.557
17/64
.273
.258
3/8
.3750
9/16
.562
.551
.650
.628
21/64
.337
.479
7/16
.4375
11/16
.688
.675
.794
.768
3/8
.385
.365
1/2
.5000
3/4
.750
.736
.866
.840
7/16
.448
.427
9/16
.5625
7/8
.875
.861
1.010
.982
31/64
.496
.473
5/8
.6250
15/16
.938
.922
1.083
1.051
35/64
.559
.535
3/4
.7500
1-1/8
1.125
1.088
1.299
1.240
41/64
.665
.617
7/8
.8750
1-5/16
1.312
1.269
1.516
1.447
3/4
.776
.724
1
1.0000
1-1/2
1.500
1.450
1.732
1.653
55/64
.887
.831
1-1/8
1.1250
1-11/16
1.688
1.631
1.949
1.859
31/32
.999
.939
1-3/8
1.3750
2-1/16
2.062
1.994
2.382
2.273
1-11/64
1.206
1.138
1-1/2
1.500
2-1/4
2.250
2.175
2.598
2.480
1-9/32
1.ASTM A194 GR. 8
1.245
1-5/8
1.6250
2-7/16
2.438
2.356
2.815
2.686
1-25/64
1.429
1.353
1-3/4
1.7500
2-5/8
2.625
2.538
3.031
2.893
1-1/2
1.540
1.460
2
2.0000
3
3.000
2.900
3.464
3.306
1-23/32
1.763
1.675
2-1/4
2.2500
3-3/8
3.375
3.263
3.897
3.719
1-15/16
1.986
1.890
2-1/2
2.5000
3-3/4
3.750
3.625
4.330
4.133
2-5/32
2.209
2.105
2-3/4
2.7500
4-1/8
4.125
3.988
4.763
4.546
2-3/8
2.431
2.319

Copper Bolts Torque Chart


Torque Specifications
Bolt Size
Inches or #
Threads
Per Inch
Standard Dry Torque in Inch-Pounds
#2
56
2.5
2.6
64
3.0
3.2
#3
48
3.9
4.0
56
4.4
4.6
#4
40
5.2
5.5
48
6.6
6.9
#5
40
7.7
8.1
44
9.4
9.8
#6
32
9.6
10.1
40
12.1
12.7
#8
32
19.8
20.7
36
22.0
23.0
#10
24
22.8
23.8
32
31.7
33.1
Bolt Size
Inches or #
Threads
Per Inch
Standard Dry Torque in Inch-Pounds
1/4
20
75.2
78.8
28
94.0
99.0
5/16
18
132
138
24
142
147
3/8
16
236
247
24
259
271
7/16
14
376
393
20
400
418
1/2
13
517
542
20
541
565
Bolt Size
Inches or #
Threads
Per Inch
Standard Dry Torque in Inch-Pounds
9/16
12
682
713
18
752
787
5/8
11
1110
1160
18
1244
1301
3/4
10
1530
1582
16
1490
1558
7/8
9
2328
2430
14
2318
2420
1
8
3440
3595
14
3110
3250
Bolt Size
Inches or #
Threads
Per Inch
Standard Dry Torque in Foot-Pounds
1 1/8
7
413
432
12
390
408
1 1/4
7
523
546
12
480
504
1 1/2
6
888
930
12
703
732

Copper Bolts Mechanical Properties


Property
Minimum Value (S.I.)
Maximum Value (S.I.)
Units (S.I.)
Minimum Value (Imp.)
Maximum Value (Imp.)
Units (Imp.)
Atomic Volume (average)
0.0071
0.0073
m3/kmol
433.268
445.473
in3/kmol
Density
8.93
8.94
Mg/m3
557.482
558.106
lb/ft3
Energy Content
100
130
MJ/kg
10833.9
14084
kcal/lb
Bulk Modulus
130
145
GPa
18.8549
21.0305
106 psi
Compressive Strength
45
330
MPa
6.5267
47.8625
ksi
Ductility
0.04
0.5
0.04
0.5
NULL
Elastic Limit
45
330
MPa
6.5267
47.8625
ksi
Endurance Limit
70
140
MPa
10.1526
20.3053
ksi
Fracture Toughness
40
100
MPa.m1/2
36.4019
91.0047
ksi.in1/2
Hardness
400
1150
MPa
58.0151
166.793
ksi
Loss Coefficient
3.5e-005
0.002
3.5e-005
0.002
NULL
Modulus of Rupture
45
330
MPa
6.5267
47.8625
ksi
Poisson’s Ratio
0.34
0.35
0.34
0.35
NULL
Shear Modulus
44
49
GPa
6.38166
7.10685
106 psi
Tensile Strength
210
390
MPa
30.4579
56.5647
ksi
Young’s Modulus
121
133
GPa
17.5496
19.29
106 psi
Glass Temperature
K
°F
Latent Heat of Fusion
200
210
kJ/kg
85.9841
90.2833
BTU/lb
Maximum Service Temperature
350
400
K
170.33
260.33
°F
Melting Point
1320
1355
K
1916.33
1979.33
°F
Minimum Service Temperature
0
0
K
-459.67
-459.67
°F
Specific Heat
372
388
J/kg.K
0.287875
0.300257
BTU/lb.F
Thermal Conductivity
147
370
W/m.K
275.189
692.652
BTU.ft/h.ft2.F
Thermal Expansion
16.8
17.9
10-6/K
30.24
32.22
10-6/°F
Breakdown Potential
MV/m
V/mil
Dielectric Constant
NULL
Resistivity
1.82
4.9
10-8ohm.m
1.82
4.9
10-8 ohm.m

Copper Bolts Chemical Composition


Material designation
COMPOSITION %
Element
Cu
Ag
Bi
O
P
Pb
Other elements (see note)
Symbol
Number
Total
Excluding
Cu-ETP
CW004A
min.
max.
99,90(1)


0,0005

0,040(2)


0,005

0,03
Ag. O
Cu-FRHC
CW005A
min.
max.
99,90(1)



0,040(2)



0,04
Ag. O
Cu-OF
CW008A
min.
max.
99,95(1)


0,0005

-(3)


0,005

0,03
Ag.
CuAg 0,04
CW0011A
min.
max.
Balance
0,03
0,05

0,0005

0,040



0,03
Ag. O
CuAg 0,07
CW0012A
min.
max.
Balance
0,06
0,08

0,0005

0,040



0,03
Ag. O
CuAg 0,10
CW0013A
min.
max.
Balance
0,08
0,12

0,0005

0,040



0,03
Ag. O
CuAg 0,04P
CW0014A
min.
max.
Balance
0,03
0,05

0,0005

-(3)
0,001
0,007


0,03
Ag. P
CuAg 0,07P
CW0015A
min.
max.
Balance
0,06
0,08

0,0005

-(3)
0,001
0,007


0,03
Ag. P
CuAg 0,10P
CW0016A
min.
max.
Balance
0,08
0,12

0,0005

-(3)
0,001
0,007


0,03
Ag. P
CuAg 0,04(OF)
CW0017A
min.
max.
Balance
0,03
0,05

0,0005

-(3)



0,0065
Ag. O
CuAg 0,07(OF)
CW0018A
min.
max.
Balance
0,06
0,08

0,0005

-(3)



0,0065
Ag. O
CuAg 0,10(OF)
CW0019A
min.
max.
Balance
0,08
0,12

0,0005

-(3)



0,0065
Ag. O
Cu-PHC
CW0020A
min.
max.
99,95(1)


0,0005

-(3)
0,001
0,006

0,005

0,03
Ag. P
Cu-HCP
CW0021A
min.
max.
99,95(1)


0,0005

-(3)
0,002
0,007

0,005

0,03
Ag. P
NOTE: the balance of the other elements (excluding copper) is defined as the sum of Ag, As, Bi, Cd, Co, Cr, Fe, Mn, Ni, 0, P, Pb, S, Sb, Se, Si, Sn, Te and Zn, excluding the other elements for which the value is already indicated.
(1)  Including silver, up to a maximum of 0.015%.
(2) An oxygen content of 0.060% is permitted, with a prior agreement beteween the seller and the buyer.
(3) Then oxygen content must be in accordance with the hydrogen embrittelment test. of EN 1976.

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