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- B7 Studs: B7 is a common grade of threaded rod or stud bolt. It is often made from alloy steel and is known for its high tensile strength and resistance to corrosion. B7 studs are commonly used in applications where high-strength fastening is required, such as in structural and industrial settings.
- 2H Nuts: 2H is a specific grade of heavy hex nuts. These nuts are typically use
- d in conjunction with B7 studs. The “2H” designation indicates that they meet certain specifications for strength and durability. Heavy hex nuts provide a larger gripping surface and are designed to withstand higher loads compared to regular hex nuts.
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When using B7 studs with 2H nuts, it’s important to ensure that the nut and stud are of the appropriate size and grade for the specific application. Additionally, proper torquing and fastening procedures should be followed to ensure a secure and reliable connection.
Size Range (mm) | Grade | Standard | |||
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Diameter | Length | Specification | |||
1/2″ TO 3″ M18 to M80 |
3″ TO 1 Meter 50MM TO 1000MM |
Grade A , Grade B, B7,B7M, L7 , L7M, B16 | ASTM A 193 , ASTM A 307 , ASTM A 370 , ANSI B18.2.1, DIN 975/976 and AS PER DRAWINGS |
Chemical Properties:
Grade | Material | Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Molybdenum |
% by weight | % by weight | % by weight | % by weight | % by weight | % by weight | % by weight | ||
B7 | Alloy Steel | 0.38-0.48 (1) | 0.75-1.00 | 0.035 max | 0.040 max | 0.15-0.35 | 0.80-1.10 | 0.15-0.25 |
Mechanical Properties:
Diameter | Tempering Temperature |
Tensile Strength |
Yield Strength, 0.2% offset |
Elongation in 4D |
Reduction of Area |
Hardness |
Min | ksi | Min ksi | Min % | Min % | Max | |
2 1/2″ and under | 1100F | 125 | 105 | 16 | 50 | 321 HBW or 35 HRC |
over 2 1/2 to 4″ | 1100F | 115 | 95 | 16 | 50 | 321 HBW or 35 HRC |
over 4 to 7″ | 1100F | 100 | 75 | 18 | 50 | 321 HBW or 35 HRC |