Operating from the heart of Abuja, Nigeria, Samuel Steels has built a strong reputation as a trusted manufacturer and supplier dedicated to supporting the nation’s growing industrial and construction sectors. We specialize in providing high-integrity Alloy Steel Grade B7 Fasteners, a critical component for projects where safety and durability are non-negotiable. Our commitment is to deliver not just products, but reliable solutions that ensure the structural integrity and success of your most demanding applications, backed by a deep understanding of local needs and international quality standards.
The strength of Alloy Steel Grade B7 Fasteners comes from their specific composition and careful manufacturing. They are primarily made from chromium-molybdenum steel, which gives them their signature toughness. Through a quenching and tempering heat treatment process, they achieve an impressive tensile strength, making them significantly stronger than standard fasteners. This unique combination allows them to maintain their mechanical properties under high stress and elevated temperatures, preventing stretching or breaking when it matters most.
Specification :Â ASTM A193 / ASME SA193
Dimension :Â DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards
Size Range :Â M3 – M56 | 3/6″ to 2″ | Custom Sizes
Length :Â 3 mm to 200 mm
| Alloy Steel B7 | C | Mn | Si | P | S | Mo | Cr |
| 0.08-0.15 | 1.00 max | 1.00 max | 0.040 | 0.030 | 0.15-0.25 | 11.50-13.50 |
| Grade | Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
| Grade B7 | M64 and under | 860 | 720 | 16 | 50 | 321 HBW or 35 HRC |
| Over M64 to M100 | 795 | 655 | 16 | 50 | 321 HBW or 35 HRC | |
| Over M100 to M180 | 690 | 515 | 18 | 50 | 321 HBW or 35 HRC |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
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Hexagon Bolts / Set Screws |
Stud Bolts |
Hexagon Nuts |
Socket Capscrews |
|---|---|---|---|
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DIN 931 |
BS4882 |
DIN 934 |
DIN 912 |
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DIN 933 |
DIN 976 |
BS 1768 |
DIN 6912 |
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BS 1768 |
BS 1769 |
DIN 7984 |
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UNI 5731 |
BS 1083 |
ANSI B18.3 |
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UNI 5739 |
BS 3692 |
ISO 4762 |
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ISO 4014 |
ISO 4032 |
UNI 5931 |
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ISO 4017 |
ISO 4033 |
BS 2470 |
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BS 1769 |
ANSI B18.2.2 |
BS 4168 |
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BS 3692 |
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ANSI B18.2.1 |
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Socket & Slotted Set Screws |
Socket & Slotted Countersunk Screws |
Studs |
Washers |
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DIN 913 |
DIN 963 |
DIN 938 |
DIN 125 |
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DIN 914 |
DIN 7991 |
DIN 939 |
DIN 9021 |
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DIN 915 |
BS 4168 |
DIN 2510 |
BS 4320 |
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DIN 916 |
BS 1981 |
BS 4439 |
BS 3410 |
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DIN 551 |
BS 483 |
BS 2693 |
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DIN 553 |
BS 2470 |
Spring Washers |
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DIN 438 |
DIN 127 |
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BS 4168 |
BS 4464 |
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BS 1802 |
You’ll typically find Alloy Steel Grade B7 Fasteners hard at work in some of the most challenging environments. They are the go-to choice for assembling pressure vessels, piping systems in oil and gas refineries, and power generation plants because they can handle intense pressure and heat. Their high tensile strength also makes them essential in heavy construction, for securing structural steelwork, and in the mining industry for heavy machinery. Essentially, wherever failure is not an option, Grade B7 fasteners provide the crucial, reliable hold needed.
Samuel Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Abuja, Nigeria.
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