Hex Bolt

ASTM A193 Grade B7 hex bolts are chromium-molybdenum alloy-steel fasteners commonly specified for high-temperature or high-pressure service. Product dimensions, thread form, coating, testing and documentation are confirmed for the specified order and application.

1. Mechanical Properties: Grade B7 requirements are reviewed against the specified product form, dimensions and applicable documentation.
2. Application Review: Service temperature, pressure and operating conditions should be confirmed against the applicable specification and project requirements.
3. Surface Protection: Coating options are reviewed for the requested size and service conditions.
4. Thread Configuration: Full- and partial-thread configurations can be quoted according to the requested dimensions and mating components.
5. Mating Components: ASTM A194 Grade 2H heavy hex nuts are commonly specified with ASTM A193 Grade B7 bolting; confirm the required nut grade, finish and dimensions for the assembly.

Engineered for extreme environments, the ASTM A193 B8M Hex Bolt by Qi Sheng delivers exceptional durability and reliability for critical B2B industrial applications. Manufactured from premium 316 stainless steel, it is the ultimate fastening solution for high-pressure, high-temperature, and highly corrosive settings.

1. 1. Extreme Temperature Tolerance: Operates flawlessly from -200℃ to 650℃ without deformation.
   2. Superior Corrosion Resistance: Premium 316 stainless steel resists acids, alkalis, salt spray, and chlorides.
   3. Heavy-Duty Load Bearing: High tensile and yield strength to withstand intense pressure and severe vibration.
   4. Standardized Efficiency: Hexagonal head profile ensures seamless fitment with standard wrenches for rapid installation and maintenance.
   5. Primary Industries: Oil & Gas, Petrochemical, Power Generation, and Marine infrastructure.

ASTM A320 Grade L7 hex bolts are alloy-steel bolting components for specified low-temperature service. Product dimensions, thread configuration, surface treatment, impact-testing requirements and documentation are reviewed against the applicable specification and order requirements.

• Low-Temperature Bolting: Intended for applications where ASTM A320 Grade L7 is specified.
• Testing Requirements: Impact-test temperature, test values and documentation are confirmed against the applicable ASTM edition and purchase requirements.
• Surface Treatment: Plain, zinc-plated, hot-dip galvanized and PTFE-coated options can be reviewed for the requested size and application.
• Thread Configuration: Full- and partial-thread configurations can be quoted according to the requested dimensions.
• Mating Components: Nut grade, finish and impact-testing requirements should be confirmed for the complete bolting assembly.

1. 1. Medium carbon steel & Alloy steel
   2. Highly corrosion-resistant surface treatment
   3. Classified as high-strength bolts, manufactured in compliance with ASTM A325 and ASTM A490 standards
   4. Designed for use with nuts

1.Complies with DIN 931, ISO 898-1, ASTM A325, categorized as half-thread hexagonal bolts

2.Material: Carbon steel (45#), alloy steel (42CrMo) or stainless steel (304/316); strength grades 4.8–12.9

3.Structure: One-piece hex head + half-thread shank (threaded section at bolt end, smooth shank in middle)

4.Surface treatments: Zinc plating, black oxide, hot-dip galvanizing; size range M3–M364, length 20mm–150mm

1.Complies with DIN 933/931, ISO 898-1, ASTM A325; general-purpose hexagonal bolts.

2.Material: Carbon steel (45#), alloy steel (42CrMo), stainless steel (304/316); strength grades 4.8–12.9.

3.Structure: One-piece hex head + threaded shank (full/half thread optional).

4.Surface treatments: Zinc plating, black oxide, hot-dip galvanizing; size M6–M30, length 20mm–150mm.

1.Complies with ASTM A325/A490, DIN 6914, DIN 7990,GB/T 1231; structural specialized hex bolts

2.Material: Medium carbon/alloy steel, quenched & tempered; strength grades 4.8–12.9

3.Structure: Hex head + threaded shank (full/half thread), paired with high-strength nuts/washers

4.Surface treatments: Hot-dip galvanizing, electroplating

5.Size M12–M64, length 30–150mm (for thick steel plates)

1. Typically made from medium carbon steel or alloy steel
2. With professional heat treatment applied to enhance strength
3. Classified as high-strength bolts, manufactured in compliance with relevant international or industrial standards (e.g., ASTM, DIN, GB)
4. Designed for matching use with nut

1. Typically made of high-quality alloy steel
2. With quenching and tempering heat treatment to ensure mechanical performance
3. Classified as heavy-duty high-strength bolts
4. Belongs to large-size fasteners, designed for matching use with nuts of corresponding specifications