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Product: Putian Fully Threaded Stud Bolt
Material: ASTM A193 Gr.B8M Cl.2, ASTM A194 GR.8M
Size: 3/4 Inch
Length: 100 mm
Thread Standard: 10 UNC
Manufacture Standard: ASME B18.31.2
Surface Treatment: Non
Remark: One Stud Bolt with Two Heavy Hex Nuts and Two Washers
Material: ASTM A193 Gr.B8M Cl.2, ASTM A194 GR.8M
Size: 3/4 Inch
Length: 100 mm
Thread Standard: 10 UNC
Manufacture Standard: ASME B18.31.2
Surface Treatment: Non
Remark: One Stud Bolt with Two Heavy Hex Nuts and Two Washers
Quantity
When reliability, corrosion resistance, and mechanical integrity are non-negotiable, our Fully Threaded Stud Bolt Assembly delivers a fastening solution engineered for the most demanding industrial environments. This complete assembly includes one fully threaded stud bolt, two heavy hex nuts, and two flat washers, providing a ready-to-install package that ensures consistent clamping force, load distribution, and long-term joint security.
Material Excellence & Corrosion Resistance
Crafted from ASTM A193 Gr.B8M Cl.2 (stud bolt) and ASTM A194 Gr.8M (nuts and washers), this assembly is purpose-built for aggressive service conditions. The B8M grade is a molybdenum-bearing austenitic stainless steel – equivalent to 316 stainless steel – which offers superior resistance to pitting, crevice corrosion, and chloride attack compared to conventional 304 grades. The Class 2 designation signifies that the material has been strain-hardened, delivering higher tensile strength (minimum 95 ksi) while maintaining excellent ductility and toughness, even at elevated temperatures up to 800°F (427°C). The matching Grade 8M nuts ensure full metallurgical compatibility, preventing galvanic corrosion and maintaining thread integrity under thermal cycling.
Crafted from ASTM A193 Gr.B8M Cl.2 (stud bolt) and ASTM A194 Gr.8M (nuts and washers), this assembly is purpose-built for aggressive service conditions. The B8M grade is a molybdenum-bearing austenitic stainless steel – equivalent to 316 stainless steel – which offers superior resistance to pitting, crevice corrosion, and chloride attack compared to conventional 304 grades. The Class 2 designation signifies that the material has been strain-hardened, delivering higher tensile strength (minimum 95 ksi) while maintaining excellent ductility and toughness, even at elevated temperatures up to 800°F (427°C). The matching Grade 8M nuts ensure full metallurgical compatibility, preventing galvanic corrosion and maintaining thread integrity under thermal cycling.
Precision Dimensions & Thread Standard
This assembly features a nominal size of 3/4 inch and an overall length of 100 mm, with 10 UNC (Unified Coarse) threads per inch. The coarse thread profile offers faster installation, reduced galling risk, and better resistance to thread stripping in high-vibration applications – a critical advantage in pump flanges, valve bonnets, pressure vessels, and heat exchanger casings. The fully threaded design maximizes grip length, allowing for flexible nut positioning and accommodating varying flange thicknesses without compromising shear strength.
This assembly features a nominal size of 3/4 inch and an overall length of 100 mm, with 10 UNC (Unified Coarse) threads per inch. The coarse thread profile offers faster installation, reduced galling risk, and better resistance to thread stripping in high-vibration applications – a critical advantage in pump flanges, valve bonnets, pressure vessels, and heat exchanger casings. The fully threaded design maximizes grip length, allowing for flexible nut positioning and accommodating varying flange thicknesses without compromising shear strength.
Manufacturing Compliance & Quality Assurance
Manufactured in strict accordance with ASME B18.31.2, the industry benchmark for stud bolt dimensions, tolerances, and material traceability, each component is produced under rigorous quality controls. This standard ensures that thread fit, head dimensions (for nuts), and washer concentricity meet or exceed the requirements of ASME B16.5 and B16.47 flange connections. Notably, this product is supplied without any surface treatment – no plating, coating, or passivation is applied. This is a deliberate choice: surface treatments like zinc plating can introduce hydrogen embrittlement risk in high-strength fasteners, while coatings may alter thread fit and reduce friction consistency. The bare, solution-annealed finish preserves the material’s native oxide layer, ensuring predictable torque-tension relationships and eliminating the risk of coating flaking or corrosion under-deposit in cryogenic or high-temperature services.
Manufactured in strict accordance with ASME B18.31.2, the industry benchmark for stud bolt dimensions, tolerances, and material traceability, each component is produced under rigorous quality controls. This standard ensures that thread fit, head dimensions (for nuts), and washer concentricity meet or exceed the requirements of ASME B16.5 and B16.47 flange connections. Notably, this product is supplied without any surface treatment – no plating, coating, or passivation is applied. This is a deliberate choice: surface treatments like zinc plating can introduce hydrogen embrittlement risk in high-strength fasteners, while coatings may alter thread fit and reduce friction consistency. The bare, solution-annealed finish preserves the material’s native oxide layer, ensuring predictable torque-tension relationships and eliminating the risk of coating flaking or corrosion under-deposit in cryogenic or high-temperature services.
Application Versatility & Trust
Ideal for oil and gas refineries, chemical processing plants, marine environments, wastewater treatment facilities, and pharmaceutical equipment, this stud bolt assembly excels wherever flange connections, manway covers, or structural joints demand repeatable tightening, easy disassembly, and corrosion-free service life. The inclusion of two heavy hex nuts and two hardened washers – all from the same material family – ensures even load spreading, reduced nut galling, and compliance with gasket manufacturer torque recommendations.
Ideal for oil and gas refineries, chemical processing plants, marine environments, wastewater treatment facilities, and pharmaceutical equipment, this stud bolt assembly excels wherever flange connections, manway covers, or structural joints demand repeatable tightening, easy disassembly, and corrosion-free service life. The inclusion of two heavy hex nuts and two hardened washers – all from the same material family – ensures even load spreading, reduced nut galling, and compliance with gasket manufacturer torque recommendations.
Choose our Fully Threaded Stud Bolt Assembly for a fastening system that combines metallurgical science, dimensional precision, and application-ready convenience. Whether you are specifying new builds or maintaining critical rotating equipment, this assembly offers the strength, traceability, and field-proven performance that engineers and maintenance professionals trust worldwide. Upgrade your joint integrity today – because in critical applications, every thread counts.
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