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Shop No- 6B, Ground Floor, Sindhi Ln, opposite Municipal School, Charni Road East, Cawasji Patel Tank, Girgaon, Mumbai, Maharashtra 400004
Email ID -
Physical Address -
Shop No- 6B, Ground Floor, Sindhi Ln, opposite Municipal School, Charni Road East, Cawasji Patel Tank, Girgaon, Mumbai, Maharashtra 400004
Home » B7 Studs Bolts and Nuts
Neelkamal Alloys LLP is a leading manufacturer and reliable supplier of ASTM A193 Grade B7 Studs and ASTM A194 Grade 2H Nuts, designed for demanding industrial applications. These components are widely used in industries like petrochemicals, power generation, oil refining, and pressure vessels because they are essential for their ability to withstand high heat and strong forces.
We manufacture the ASTM A193 B7 Studs from heat-treated chromium-molybdenum alloy steel to enhance its durability and strength. Bolting flanges, valves, and fittings is a common application for these fasteners, which are well-suited for high-pressure, high-temperature service. With a typical tensile strength of 125 ksi (860 MPa) and yield strength around 105 ksi (724 MPa), they conform to stringent ASTM specifications. They are available in both full-thread and double-end thread forms, with surface finishes like plain, black oxide, or hot-dip galvanized based on application needs.
Heat-treated carbon steel, the material of ASTM A194 2H Nuts, complements the studs by providing reliable hardness and strength for pressure service. These nuts are engineered to work seamlessly with B7 studs and provide a minimum proof load of 175 ksi (1207 MPa), with Rockwell hardness values in the HRC 24–35 range. Sizes typically range from 1/4″ to 4″ in diameter, and all nuts are manufactured in accordance with ASME B18.2.2 standards.
Neelkamal Alloys LLP ensures full traceability and testing for every batch of fasteners supplied. All products are certified with EN 10204 3.1 and endure a series of rigorous inspections, such as mechanical property verification, hardness testing, and dimensional checks. On request, we also conduct nondestructive testing, such as ultrasonic or magnetic particle inspection, to meet project-specific standards.
With a strong supply chain network, Neelkamal Alloys LLP caters to both domestic and international markets, including the USA, Gulf countries, Europe, and Southeast Asia. We maintain a ready stock of standard measurements and also provide custom-length options to accommodate the needs of a variety of industries. Please do not hesitate to contact our team for the most recent pricing, technical information sheets, or to request a quotation for bulk orders. We are dedicated to providing comprehensive support for your fastener requirements.
ASTM A193 Grade B7
Fasteners |
Price
|
astm a193 grade B7 stud bolt |
US $0.001-4 / Piece |
ASTM A193 Grade B7 Plow Bolt |
US $29.60 / pkg. of 25 |
ASTM A193 grade B7 threaded Rod, B7 stud bolt |
US $0.01-2 / Piece |
ASTM A193 Grade B7 Structural Bolt |
US $13.20 / pkg. of 25 / Kilogram |
ASTM A193 grade B7 wheel stud bolt |
US $0.1-4 / Piece |
ASTM A193 grade B7 threaded rod with 2h nut |
US $0.01-2 / Piece |
ASTM A193 Grade B7 Flat Washer |
US $0.06–$4.92 |
Stud bolt DIN 975 grade ASTM A193 B7 |
US $0.6-1.3 / Piece |
ASTM A193 Gr B7 Stud Bolt |
Stud Bolts ASTM A193 B7 |
ASTM A193 Grade B7 Material |
ASTM A193 Grade B7 Bolt Strength |
ASTM A194 Grade 2H Nuts |
US $3.00–$6.22 |
Element |
B7 (AISI 4140) |
Carbon |
0.38 – 0.48% |
Manganese |
0.75 – 1.00% |
Phosphorus, max |
0.035% |
Sulfur, max |
0.040% |
Silicon |
0.15 – 0.35% |
Chromium |
0.80 – 1.10% |
Nickel |
|
Molybdenum |
0.15 – 0.25% |
Grade |
Size |
Tensile ksi, min |
Yield, ksi, min |
Elong, %, min |
RA % min |
HBW |
HRC |
---|---|---|---|---|---|---|---|
B7 |
Up to 2-1/2 |
125 |
105 |
16 |
50 |
321 max |
35 max |
2-5/8 – 4 |
115 |
95 |
16 |
50 |
|||
4-1/8 – 7 |
100 |
75 |
18 |
50 |
Specification | Material | Nominal Size, In. | Tempering Temp. °F | Proof Load Stress, ksi | Hardness Rockwell | See Note | |
---|---|---|---|---|---|---|---|
Min | Max | ||||||
ASTM A194 Grade 2H | Medium Carbon Steel, Quenched and Tempered | 1/4 – 4 | 850 | 175 | C24 | C38 | 1,2 |
NOMINAL SIZE (D)
|
BODY DIAMETER
|
HEAD THICKNEASTM A193
|
ACROASTM A193 THE FLATS
|
ACROASTM A193 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
|
140.00
|
167.43
|
159.60
|
Diameter (D) | Body Diameter (D) | Across the Flats (F) | Across the Corners © | Head Height (H) | Thread Lengths (T) | |||||
---|---|---|---|---|---|---|---|---|---|---|
MAX | MIN | MAX | MIN | MAX | MIN | MAX | MIN | < 6” | > 6” | |
1/2 | 0.515 | 0.482 | 0.875 | 0.85 | 1.01 | 0.969 | 0.364 | 0.302 | 1.25 | 1.5 |
5/8 | 0.642 | 0.605 | 1.062 | 1.031 | 1.227 | 1.175 | 0.444 | 0.378 | 1.5 | 1.75 |
3/4 | 0.768 | 0.729 | 1.25 | 1.212 | 1.443 | 1.383 | 0.524 | 0.455 | 1.75 | 2 |
7/8 | 0.895 | 0.852 | 1.438 | 1.394 | 1.66 | 1.589 | 0.604 | 0.531 | 2 | 2.25 |
1 | 1.022 | 0.976 | 1.625 | 1.575 | 1.876 | 1.796 | 0.7 | 0.591 | 2.25 | 2.5 |
1 1/8 | 1.149 | 1.098 | 1.812 | 1.756 | 2.093 | 2.002 | 0.78 | 0.658 | 2.5 | 2.75 |
1 1/4 | 1.277 | 1.223 | 2 | 1.938 | 2.309 | 2.209 | 0.876 | 0.749 | 2.75 | 3 |
1 3/8 | 1.404 | 1.345 | 2.188 | 2.119 | 2.526 | 2.416 | 0.94 | 0.81 | 3 | 3.25 |
1 1/2 | 1.531 | 1.47 | 2.375 | 2.3 | 2.742 | 2.622 | 1.036 | 0.902 | 3.25 | 3.5 |
1 3/4 | 1.785 | 1.716 | 2.75 | 2.662 | 3.175 | 3.035 | 1.196 | 1.054 | 3.75 | 4 |
2 | 2.039 | 1.964 | 3.125 | 3.025 | 3.608 | 3.449 | 1.388 | 1.175 | 4.25 | 4.5 |
2 1/4 | 2.305 | 2.214 | 3.5 | 3.388 | 4.041 | 3.862 | 1.548 | 1.327 | 4.75 | 5 |
2 1/2 | 2.559 | 2.461 | 3.875 | 3.75 | 4.474 | 4.275 | 1.708 | 1.479 | 5.25 | 5.5 |
2 3/4 | 2.827 | 2.711 | 4.25 | 4.112 | 4.907 | 4.688 | 1.869 | 1.632 | 5.75 | 6 |
3 | 3.081 | 2.961 | 4.625 | 4.475 | 5.34 | 5.102 | 2.06 | 1.815 | 6.25 | 6.5 |
ASTM A193 B7 Studs | ASTM A194 2H Nuts |
ASTM A194 2H Heavy Hex Nuts | ASTM A193 B7 double ended stud |
ASTM A194 2H Threaded Rods | ASTM A193 B7 lock nut |
B7 self locking nuts Manufacturer | 2H nylon insert nut |
ASTM A193 B7 Threaded Rod | ASTM A194 2H Hex Coupling Nut |
ASTM A193 B7 Fasteners Stock Holder | ASTM A194 2H Threaded Ball Stud |
ASTM A194 nylon insert nut | ASTM A193 Studs Exporter |
ASTM A320 L7/L7M Fasteners Manufacturer | ASTM A194 7M/7 Fasteners Manufacturer |
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