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Putian B8M Bolt and nut
QS Fastener: Putian B8M Bolt and nut
Product : Putian B8M Bolt and nut
Size: 1/2 Inch
Material for Stud Bolt: Stainless Steel 316, ASTM A193 B8M
Material for Nut: ASTM A194 Gr.8M
Thread: 13 UNC
Total Length: 3-1/4 Inch
Standard for Bolt: ASME B18.31.2
Standard for Nut: ASME B18.2.2
Size: 1/2 Inch
Material for Stud Bolt: Stainless Steel 316, ASTM A193 B8M
Material for Nut: ASTM A194 Gr.8M
Thread: 13 UNC
Total Length: 3-1/4 Inch
Standard for Bolt: ASME B18.31.2
Standard for Nut: ASME B18.2.2
Quantity
The Putian B8M Bolt and Nut set is a high-performance fastening solution engineered for demanding industrial environments. Manufactured from Stainless Steel 316 and conforming to ASTM A193 B8M for the stud bolt and ASTM A194 Gr.8M for the nut, this combination delivers superior strength, exceptional corrosion resistance, and long-term reliability. Sized at 1/2 inch with a 13 UNC thread and 3-1/4 inch total length, it meets ASME B18.31.2 (bolt) and ASME B18.2.2 (nut) standards, ensuring dimensional precision and interchangeability with American-made equipment.
Key Features & Materials
- Material Excellence: The B8M bolt uses 316 stainless steel, molybdenum-bearing austenitic alloy, offering enhanced pitting and crevice corrosion resistance – ideal for chloride-rich or marine atmospheres. The matching Grade 8M nut provides consistent galvanic compatibility, reducing galling risks during tightening.
- Thread Design: The 13 UNC thread profile balances fine-thread strength with practical assembly efficiency. Compared to coarser threads, it offers higher tensile stress area and better resistance to loosening under vibration, while remaining compatible with standard taps and dies used across North American piping and structural systems.
- Dimensional Compliance: Precision rolled threads and controlled head/ nut dimensions guarantee proper clamp load and torque retention, critical for pressure-containing joints.
- Material Excellence: The B8M bolt uses 316 stainless steel, molybdenum-bearing austenitic alloy, offering enhanced pitting and crevice corrosion resistance – ideal for chloride-rich or marine atmospheres. The matching Grade 8M nut provides consistent galvanic compatibility, reducing galling risks during tightening.
- Thread Design: The 13 UNC thread profile balances fine-thread strength with practical assembly efficiency. Compared to coarser threads, it offers higher tensile stress area and better resistance to loosening under vibration, while remaining compatible with standard taps and dies used across North American piping and structural systems.
- Dimensional Compliance: Precision rolled threads and controlled head/ nut dimensions guarantee proper clamp load and torque retention, critical for pressure-containing joints.
Application Scenarios
This B8M bolt and nut set is widely specified in:
- Chemical and petrochemical processing – pumps, valves, flanges, and heat exchangers exposed to aggressive media.
- Marine and offshore platforms – where saltwater spray accelerates corrosion of lower-grade alloys.
- Food and pharmaceutical equipment – thanks to the non-reactive, cleanable surface of 316 SS.
- Wastewater treatment and desalination plants – enduring humid, oxidizing environments.
- General industrial maintenance – retrofitting or repairing American-standard machinery and piping systems.
This B8M bolt and nut set is widely specified in:
- Chemical and petrochemical processing – pumps, valves, flanges, and heat exchangers exposed to aggressive media.
- Marine and offshore platforms – where saltwater spray accelerates corrosion of lower-grade alloys.
- Food and pharmaceutical equipment – thanks to the non-reactive, cleanable surface of 316 SS.
- Wastewater treatment and desalination plants – enduring humid, oxidizing environments.
- General industrial maintenance – retrofitting or repairing American-standard machinery and piping systems.
Why Choose Putian B8M Fasteners?
The ASTM A193 B8M Bolt and nut offers an unrivaled combination of creep resistance, fatigue strength, and oxidation stability up to elevated temperatures (800°F+). Its 13 UNC thread ensures reliable make-up without cross-threading, reducing installation time and rework costs. Whether you are an engineer specifying critical bolting for pressure vessels or a maintenance professional seeking dependable replacements, this fastener set delivers consistent performance and documented traceability.
The ASTM A193 B8M Bolt and nut offers an unrivaled combination of creep resistance, fatigue strength, and oxidation stability up to elevated temperatures (800°F+). Its 13 UNC thread ensures reliable make-up without cross-threading, reducing installation time and rework costs. Whether you are an engineer specifying critical bolting for pressure vessels or a maintenance professional seeking dependable replacements, this fastener set delivers consistent performance and documented traceability.
Conclusion
For projects that demand safety, durability, and code compliance, the Putian B8M Bolt and Nut in 1/2"x 3-1/4"is a proven choice. Stocked in standard lengths and available with optional coatings or lubrication upon request, it supports just-in-time delivery for urgent turnarounds. Choose ASTM A193 B8M – the benchmark for stainless steel bolting in corrosive service.
For projects that demand safety, durability, and code compliance, the Putian B8M Bolt and Nut in 1/2"x 3-1/4"is a proven choice. Stocked in standard lengths and available with optional coatings or lubrication upon request, it supports just-in-time delivery for urgent turnarounds. Choose ASTM A193 B8M – the benchmark for stainless steel bolting in corrosive service.
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