Description
Description
Heavy Hex Nuts – ASTM A194 | MKM Fasteners
MKM Fasteners supplies precision-engineered Heavy Hex Nuts conforming to ASTM A194 / A194M standards, made for high-pressure and high-temperature applications in industrial settings. These nuts are primarily used in combination with bolts, studs, and other threaded components in critical environments such as oil & gas, refineries, chemical plants, and power generation.
Manufactured from high-strength carbon steel, our heavy hex nuts are available in multiple grades including Gr 2H, 2HM, Gr-4, and Gr-7, each designed to withstand demanding service conditions. These nuts undergo heat treatment processes such as quenching and tempering to ensure enhanced mechanical strength, durability, and corrosion resistance.
Product Specifications:
- Product Name: Heavy Hex Nut
- Category: Hexagon Nut
- Material: Carbon Steel
- Size Range: 1/2” to 4” | M12 to M64
- Surface Finish: Black, Hot Dip Galvanized (HDG)
- Strength Grades: Gr 2H, 2HM, Gr-4, Gr-7
- Standard Specification: ASTM A194 / A194M
- Dimensions As Per: ASME / ANSI B18.2.2 & ASME B18.2.4.6M
- Sizes ranging from 1/4” to 4” and M3 to M100.
- Dimensions as per ASME / ANSI B18.2.2/ ASME B18.2.4.6M for nuts.
- Properties conforming to ASTM A194 Gr.2HM
Key Features:
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Designed for high-pressure and high-temperature use
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Manufactured from durable carbon steel
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Heat-treated for maximum strength and toughness
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Ideal for flanges, valves, piping systems, and structural assemblies
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Available in various finishes for corrosion protection
Why Choose MKM Fasteners?
Our Heavy Hex Nuts meet international quality standards and are rigorously tested for performance and reliability. With a wide range of sizes and grades in stock, we deliver fastening solutions tailored to your project’s exact needs.
MKM Fasteners – Dependable Heavy Hex Nuts for Demanding Industrial Environments.


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