ASTM A193 B7 studs and A194 2H nuts are the most commonly specified fastener combinations for high temperature, high pressure bolted joint applications. B7 stud bolts are heat-treated chromium molybdenum alloy steel fasteners used for flanged connections in the oil and gas, petrochemical, power generation, and pressure vessel industries. The bolted connection in the assembly is code-compliant and uses A194 2H strong hex nuts that can handle rough working conditions. We manufacture and ship ASTM A193 B7 studs and A194 2H nuts with complete material certification to customers locally and overseas.
By choosing Amco Metals, you are assured of working with a renowned manufacturer and exporter of B7 studs and 2H nuts with comprehensive in-house production capabilities. We offer certified materials with EN 10204 3.1 mill test certifications and complete heat traceability to the oil, gas and power generating industries. We offer a broad dimensional range of bespoke lengths and thread shapes, at low cost and extremely predictable delivery dates.
At Amco Metals, we cultivate and nurture excellence and reform and address them in our outcomes through continuous strains and quality control. We provide our clients with a high-quality product profile and help them select the best option for their specific industry. We are an ISO 9001: 2015 certified company dedicated to building and sustaining customer-oriented engagements.
We are a manufacturer, trader, stockist, supplier, and exporter of B7-2H Fasteners that can be mechanically fastened or clamped permanently or temporarily. They are quick to fit and remove too. Our B7 2H stud bolts are crafted precisely and adhere to industry-leading standards. With precise stud bolts and nuts dimensions, our products fit seamlessly into your projects, ensuring a secure and efficient assembly.
Table of Content
ASTM A193 B7 Studbolts
ASTM A193 B7 Studbolts
ASTM A194 2H Hex Nuts
ASTM A194 2H Hex Nuts
ASTM A194 2H Screws
ASTM A194 2H Screws
The SA 193 Gr B7 material used in our stud bolts offers exceptional strength and durability, making them ideal for high-pressure and high-temperature applications. We offer ASTM A193 B7 Studs and Bolts for high-pressure service applications like heat exchangers and boilers, as they have high strength and tolerance. Our A194 2H Heavy Hex Nut benefits heavy industrial applications operating at elevated temperatures.
We hold a check on market courses and interests to develop new, sustainable and efficient products capable of withstanding customization. We have built a strong portfolio of premium products over the span of 25 years.
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ASTM A193 Grade B7
Fasteners
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Price
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astm a193 grade B7 stud bolt
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US $0.001-4 / Piece
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ASTM A193 Grade B7 Plow Bolt
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US $29.60 / pkg. of 25
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ASTM A193 grade B7 threaded Rod, B7 stud bolt
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US $0.01-2 / Piece
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ASTM A193 Grade B7 Structural Bolt
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US $13.20 / pkg. of 25 / Kilogram
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ASTM A193 grade B7 wheel stud bolt
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US $0.1-4 / Piece
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ASTM A193 grade B7 threaded rod with 2h nut
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US $0.01-2 / Piece
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ASTM A193 Grade B7 Flat Washer |
US $0.06–$4.92
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Stud bolt DIN 975 grade ASTM A193 B7
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US $0.6-1.3 / Piece
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ASTM A193 Gr B7 Stud Bolt |
Stud Bolts ASTM A193 B7 |
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ASTM A193 Grade B7 Material |
ASTM A193 Grade B7 Bolt Strength |
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ASTM A194 Grade 2H Nuts
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US $3.00–$6.22
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Specifications : IS, BS, ASTM
Standard : ASTM / ASME - A/ SB 193/194
Size : 1/2'' X TO 4''
Length :100 TO 1000MM
Type : Stud Nuts
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Element
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B7 (AISI 4140)
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Carbon
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0.38 - 0.48%
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Manganese
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0.75 - 1.00%
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Phosphorus, max
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0.035%
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Sulfur, max
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0.040%
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Silicon
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0.15 - 0.35%
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Chromium
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0.80 - 1.10%
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Nickel
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Molybdenum
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0.15 - 0.25%
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Grade
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Size
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Tensile ksi, min
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Yield, ksi, min
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Elong, %, min
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RA % min
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HBW
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HRC
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|---|---|---|---|---|---|---|---|
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B7
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Up to 2-1/2
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125
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105
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16
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50
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321 max
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35 max
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2-5/8 - 4
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115
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95
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16
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50
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|||
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4-1/8 - 7
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100
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75
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18
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50
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| 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 |
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NOMINAL SIZE (D)
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BODY DIAMETER
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HEAD THICKNEASTM A193
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ACROASTM A193 THE FLATS
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ACROASTM A193 CORNERS
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||||
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D (MAX)
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D (MIN)
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H (MAX)
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H (MIN)
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F (MAX)
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F (MIN)
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C (MAX)
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C (MIN)
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m10
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10.00
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9.78
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6.63
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6.17
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17.00
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15.73
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18.48
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17.77
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m12
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12.00
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11.73
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7.76
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4.24
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19.00
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17.73
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20.78
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20.03
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m14
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14.00
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13.73
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9.09
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8.51
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22.00
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20.67
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24.25
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23.35
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m16
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16.00
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15.73
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10.32
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9.68
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24.00
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23.67
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27.71
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26.75
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m20
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20.00
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19.67
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12.88
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12.12
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30.00
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29.16
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34.64
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32.95
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m24
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24.00
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23.67
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15.44
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14.56
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36.00
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35.00
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41.57
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39.55
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m30
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30.00
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29.67
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19.48
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17.92
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46.00
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45.00
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53.12
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50.85
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m36
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36.00
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35.61
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23.38
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21.63
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55.00
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53.80
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63.51
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60.79
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m42
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42.00
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41.38
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26.97
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25.03
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65.00
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62.90
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75.06
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71.71
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m48
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48.00
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47.38
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31.07
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28.93
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75.00
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72.60
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86.60
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82.76
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m56
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56.00
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55.26
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36.2
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33.80
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85.00
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82.20
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98.15
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93.71
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m64
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64.00
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63.26
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41.32
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38.68
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95.00
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91.80
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109.70
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104.65
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m72
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72.00
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71.26
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46.45
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43.55
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105.00
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101.40
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121.24
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115.60
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m80
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80.00
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79.26
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51.58
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48.42
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115.00
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111.00
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132.72
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126.54
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m90
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90.00
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89.13
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57.74
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54.26
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130.00
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125.50
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150.11
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143.07
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m100
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90.00
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99.13
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63.9
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60.10
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145.00
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140.00
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167.43
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159.60
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| 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 |
As a premier chromium-molybdenum alloy steel specification, ASTM A193 B7 covers heat-treated fasteners engineered for high-pressure systems. As a leading manufacturer, we engineer B7 stud bolts to deliver exceptional strength and structural safety in high-temperature flanged connections.
Mechanical load requirements. Heavy hex nuts are utilized with B7 studs. An unapproved A194 B7 connection is a hazardous weak point, while this recognized coupling guarantees joint integrity under extreme industrial load.
Both are good stud bolts, but B16 has vanadium for higher heat restrictions. B7 covers most high pressure circumstances, and B16 is used when operational temperatures surpass B7 restrictions.
ASTM A193 B7 fasteners are very important for oil refining, chemical processing, power generation, etc. These sturdy B7 studs are utilized in high pressure piping and heat exchangers.
Yes, this heavy duty grade of stud bolt was specifically designed for pressure containment joints. In harsh conditions and high pressure cycles, B7 studs unique chemistry maintains clamp loads and mechanical strength of the material.
| 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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