Recommend Products
Name: Fujian Monel 400 Double End Stud Material: Monel 400 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: Resistant to hydrofluoric acidQS Fastener: Monel 400 Double End Stud
Name: Inconel 625 Double End Stud Material: Inconel 625 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 625 Double End Stud
Name: Xiamen Inconel 600 High Strength Fastener Material: Inconel 600 Standard: ASME Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 High Strength Fastener
Name: Inconel 600 Stud Bolt Putian Material: Inconel 600 Standard: ASME B18.2.1 Size: 5/16 to 4 inch Length: 30 to 1000 mm Class: 12.9 Feature: High Yield Strength, Durable Strength and Corrosion ResistanceQS Fastener: Inconel 600 Stud Bolt
Suzhou Hex Cap Head Bolt
QS Fastener: Suzhou Hex Cap Head Bolt
Product: Suzhou Hex Cap Head Bolt
Material: ASTM A193 Gr.B8M Cl.2, SS 316 with Strain Hardening
Class: 2A
Thread: 11 UNC
Dimension: 5/8 IN
Length: 2 IN
Material: ASTM A193 Gr.B8M Cl.2, SS 316 with Strain Hardening
Class: 2A
Thread: 11 UNC
Dimension: 5/8 IN
Length: 2 IN
Quantity
Engineered for extreme environments, our Hex Cap Head Bolt combines premium metallurgy with precision manufacturing. Produced in Suzhou, this fastener is forged from ASTM A193 Gr.B8M Cl.2 material – a strain-hardened grade of SS 316 that delivers superior corrosion resistance and elevated tensile strength. Unlike standard 316 bolts, the strain-hardening process increases yield strength without sacrificing ductility, making it ideal for high-pressure, high-temperature, and chemically aggressive settings.
Material & Mechanical Advantages
The bolt’s austenitic stainless steel composition (SS 316 with molybdenum) offers exceptional pitting and crevice corrosion resistance, especially against chlorides and acidic media. Strain hardening further refines the grain structure, boosting proof load and hardness while maintaining excellent toughness at sub-zero and elevated temperatures. This dual enhancement ensures the fastener outperforms annealed 316 bolts in cyclic loading and vibration-prone assemblies.
The bolt’s austenitic stainless steel composition (SS 316 with molybdenum) offers exceptional pitting and crevice corrosion resistance, especially against chlorides and acidic media. Strain hardening further refines the grain structure, boosting proof load and hardness while maintaining excellent toughness at sub-zero and elevated temperatures. This dual enhancement ensures the fastener outperforms annealed 316 bolts in cyclic loading and vibration-prone assemblies.
Thread Precision & Dimensional Data
Manufactured to Class 2A thread tolerance, the bolt features an 11 UNC (Unified Coarse) thread series – a standard choice for general engineering due to its easy starting and resistance to cross-threading. The nominal dimension is 5/8 inch, with a 2-inch length under head, providing ample grip for medium-to-heavy flange connections, pump casings, valve bonnets, and structural steel joints. The hex cap head design allows rapid torque application with standard wrenches, ensuring consistent clamp load and simplified maintenance.
Manufactured to Class 2A thread tolerance, the bolt features an 11 UNC (Unified Coarse) thread series – a standard choice for general engineering due to its easy starting and resistance to cross-threading. The nominal dimension is 5/8 inch, with a 2-inch length under head, providing ample grip for medium-to-heavy flange connections, pump casings, valve bonnets, and structural steel joints. The hex cap head design allows rapid torque application with standard wrenches, ensuring consistent clamp load and simplified maintenance.
Key Applications
This Hex Cap Head Bolt is widely specified in:
- Oil & gas pipelines: flanged joints subject to sour service or seawater splash.
- Chemical processing reactors: agitator mounts and manway covers exposed to corrosive fluids.
- Marine equipment: propeller shafts, rudder stocks, and deck hardware.
- Power generation: turbine housings, heat exchangers, and boiler access doors.
- Wastewater treatment: pump flanges and clarifier mechanisms.
This Hex Cap Head Bolt is widely specified in:
- Oil & gas pipelines: flanged joints subject to sour service or seawater splash.
- Chemical processing reactors: agitator mounts and manway covers exposed to corrosive fluids.
- Marine equipment: propeller shafts, rudder stocks, and deck hardware.
- Power generation: turbine housings, heat exchangers, and boiler access doors.
- Wastewater treatment: pump flanges and clarifier mechanisms.
Reliability & Compliance
Every batch undergoes dimensional verification, hardness testing, and thread gauge inspection to meet ASTM A193 requirements. The 2A fit ensures interchangeability with standard heavy hex nuts and washers, reducing inventory complexity. With a 5/8"x 2"UNC configuration, this bolt directly replaces OEM parts in legacy systems while offering upgraded corrosion protection.
Every batch undergoes dimensional verification, hardness testing, and thread gauge inspection to meet ASTM A193 requirements. The 2A fit ensures interchangeability with standard heavy hex nuts and washers, reducing inventory complexity. With a 5/8"x 2"UNC configuration, this bolt directly replaces OEM parts in legacy systems while offering upgraded corrosion protection.
Why Choose Suzhou Manufacturing
Our Suzhou facility employs computer-controlled rolling and heat treatment, guaranteeing consistent mechanical properties across production runs. We provide full material test reports (MTR) and traceability from melt to final packaging. Whether you are assembling a new skid or retrofitting existing equipment, this Hex Cap Head Bolt delivers the clamping force, chemical resilience, and fatigue life required for 20+ years of service.
Our Suzhou facility employs computer-controlled rolling and heat treatment, guaranteeing consistent mechanical properties across production runs. We provide full material test reports (MTR) and traceability from melt to final packaging. Whether you are assembling a new skid or retrofitting existing equipment, this Hex Cap Head Bolt delivers the clamping force, chemical resilience, and fatigue life required for 20+ years of service.
Ordering & Logistics
Available in standard zinc-plated or plain finish; custom coatings (e.g., Xylan, PTFE) upon request. Stocked in metric and imperial variants – contact our technical team for torque recommendations and installation guidelines. Trust our Suzhou-engineered bolts to keep your critical connections secure, compliant, and maintenance-free.
Available in standard zinc-plated or plain finish; custom coatings (e.g., Xylan, PTFE) upon request. Stocked in metric and imperial variants – contact our technical team for torque recommendations and installation guidelines. Trust our Suzhou-engineered bolts to keep your critical connections secure, compliant, and maintenance-free.
Send Message
