Marzouk Steel, located in Tunis, Tunisia, has built a solid reputation as a reliable manufacturer and supplier of top-notch Alloy Steel Gr B7M fasteners. Known for their impressive strength, durability, and precision, these fasteners are crafted to meet the rigorous demands of industries like oil and gas, heavy machinery, and construction. With cutting-edge manufacturing techniques and stringent quality control measures, Marzouk Steel guarantees that each Gr B7M fastener provides dependable performance, a long lifespan, and mechanical stability. Catering to sectors such as construction, petrochemicals, and engineering, the company offers fasteners that boast exceptional tensile strength, corrosion resistance, and toughness, making them perfect for high-stress operational environments.
These Alloy Steel Gr B7M fasteners are made from high-quality alloy steel that includes carbon, chromium, molybdenum, and nickel, all engineered to enhance strength, toughness, and wear resistance. They showcase remarkable mechanical properties, with a tensile strength ranging from about 1,030 to 1,250 MPa, yield strength between 830 and 950 MPa, and an elongation of 8 to 12%. After undergoing heat treatment to boost hardness, fatigue resistance, and dimensional stability, these fasteners maintain reliable performance even under heavy loads and extreme conditions. Their blend of toughness, ductility, and mechanical integrity ensures secure and lasting fastening in critical industrial assemblies.
Specification :Â ASTM A 193 ASME SA 193
Standard :Â DIN, ASTM, BS and all International Standards
Length :Â 3 mm to B7M mm
Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Types :Â Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Socket Head Cap Screw, Washers, Spring Washers, Studs, Anchors
| Alloy Steel B7M | C | Mn | P | S | Si | Cr | Mo |
| 0.37-0.49 | 0.65-1.10 | 0.035 Max | 0.04 Max | 0.15-0.35 | 0.75-1.20 | 0.15-0.25 |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
|---|---|---|---|---|---|
| B7M | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 – 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 – 7 | 100 | 75 | 18 | 50 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
|
Hexagon Bolts / Set Screws |
Stud Bolts |
Hexagon Nuts |
Socket Capscrews |
|---|---|---|---|
|
DIN 931 |
BS4882 |
DIN 934 |
DIN 912 |
|
DIN 933 |
DIN 976 |
BS 1768 |
DIN 6912 |
|
BS 1768 |
BS 1769 |
DIN 7984 |
|
|
UNI 5731 |
BS 1083 |
ANSI B18.3 |
|
|
UNI 5739 |
BS 3692 |
ISO 4762 |
|
|
ISO 4014 |
ISO 4032 |
UNI 5931 |
|
|
ISO 4017 |
ISO 4033 |
BS 2470 |
|
|
BS 1769 |
ANSI B18.2.2 |
BS 4168 |
|
|
BS 3692 |
|||
|
ANSI B18.2.1 |
|||
|
Socket & Slotted Set Screws |
Socket & Slotted Countersunk Screws |
Studs |
Washers |
|
DIN 913 |
DIN 963 |
DIN 938 |
DIN 125 |
|
DIN 914 |
DIN 7991 |
DIN 939 |
DIN 9021 |
|
DIN 915 |
BS 4168 |
DIN 2510 |
BS 4320 |
|
DIN 916 |
BS 1981 |
BS 4439 |
BS 3410 |
|
DIN 551 |
BS 483 |
BS 2693 |
|
|
DIN 553 |
BS 2470 |
Spring Washers |
|
|
DIN 438 |
DIN 127 |
||
|
BS 4168 |
BS 4464 |
||
|
BS 1802 |
Alloy Steel Gr B7M fasteners find extensive use across various industries, including oil and gas, petrochemicals, construction, automotive, and heavy machinery. They play a crucial role in securing vital components in engines, pipelines, pressure vessels, and structural frameworks that face high stress and vibration. With their superior tensile strength, corrosion resistance, and durability, these fasteners promise long-lasting performance and minimized maintenance. Engineers and industrial operators favor Alloy Steel Gr B7M fasteners for high-precision, high-strength fastening needs in demanding environments, making them a top choice in the field.
Marzouk 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 Tunis, Tunisia.
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