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Home / Products / Bolts and Nuts / ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory
Quality ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels factory

ASTM A193 B7 Hex Bolts with 800 MPa Tensile Strength and Grade 12.9 Heavy Hex Nuts for Pressure Vessels

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ASTM A193 B16 Stud Bolts

Chrome-Moly-Vanadium Hex Head Bolts

Grade 8.8 Level Alloy Steel Bolts
Product Summary
Drawing A193 B7 Hex Bolts with A194 2H Heavy Hex Nuts Precision-engineered fasteners manufactured to customer tolerance requirements, specifically designed for pressure vessel and pipeline assembly projects. Product Overview Our BOLTS and Nuts product line represents versatile, essential components ...

Product Details

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800 MPa Tensile Strength Hex Bolts

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Grade 12.9 Heavy Hex Nuts

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ASTM A193 B7 Fasteners
High Strength: σb/MPa≥: 410
Tensilestrength: 800 MPa
Grade: 12.9
Headtype: Hex Head
Quality Level: 12.9, 10.9, 8.8, 6.8, 4.8 Grade
Weightperpiece: Varies By Size
Tolerance: As Per Customer's Requirement
Productname: BOLTS And Nuts
Product Description
Drawing A193 B7 Hex Bolts with A194 2H Heavy Hex Nuts
Precision-engineered fasteners manufactured to customer tolerance requirements, specifically designed for pressure vessel and pipeline assembly projects.
Product Overview
Our BOLTS and Nuts product line represents versatile, essential components engineered to meet diverse industrial and construction requirements. Manufactured with precision and adherence to stringent quality standards, these fasteners ensure durability, reliability, and high performance across various applications.
Featuring hex nut and hex head designs for optimal installation ease and secure fastening capabilities, the hexagonal shape provides superior tool grip for both manual and automated assembly processes while facilitating even pressure distribution during tightening.
Key Features
  • Product Name: BOLTS and Nuts
  • Tensile Strength: 800 MPa
  • Head Type: Hex Head
  • Service: OEM ODM
  • Quality Control: 100% Inspected
  • Thread Type: Fine Thread
  • Manufactured with ASTM A354 Grade BD alloy steel bolts for high strength
  • Includes ASTM A194 2HM nuts suitable for hydrogen service applications
  • Compliant with EN 14399-1 HV 10.9 preloaded structural bolting assemblies standards
Technical Specifications
Parameter Specification
Quality Level 12.9, 10.9, 8.8, 6.8, 4.8 Grade
Nut Type Hex Nut
Size OD70, 80, 100mm
Thread Type Fine Thread
Grade 12.9
Head Type Hex Head
Weight per Piece Varies By Size
Dimensions Drawing
Thread Tolerance 0.02
Quality Control 100% Inspected
Material Standards & Applications
ASTM A307 Grade B: Carbon steel bolts with excellent tensile strength and toughness for construction and structural applications.
ASTM A193 B16: Chrome-moly-vanadium stud bolts engineered for extreme conditions in power plants, refineries, and heavy-duty industrial settings.
ASTM A320 L7M: Low temperature bolting impact tested for cryogenic applications, cold storage facilities, and severe temperature fluctuations.
Industry Applications
Our BOLTS and nuts are essential components across multiple industries including automotive manufacturing, heavy machinery, aerospace, oil and gas, and infrastructure projects. The diverse quality grade selection (12.9, 10.9, 8.8, 6.8, 4.8) ensures appropriate strength and durability for specific applications.
Specialized applications include ISO 898-1 class 10.9 alloy steel bolts with grade 10 nuts for high-load automotive and mechanical joints, ASTM A193 B7 alloy steel stud bolts for pressure vessels and pipeline flanges, and duplex stainless steel bolts and nuts S31803 for corrosive environments in marine engineering, chemical plants, and offshore platforms.
Customization Services
We provide comprehensive OEM and ODM services for Hex Head bolts and Hex Nuts manufactured to precise dimensional drawings. All products undergo 100% inspection to ensure highest quality standards. Custom material options include:
  • ASTM A320 B8 Class 1 stainless steel bolts (low temperature)
  • ASTM A490 high strength structural bolts
  • ASTM A325 Type 1 structural bolts with heavy hex nuts
Tolerance specifications are accommodated according to customer requirements to guarantee perfect fit and performance.
Technical Support & Services
Our comprehensive technical support includes detailed product specifications, installation guidance, maintenance tips, and troubleshooting assistance. We provide customized solutions for specialized applications and material selection advice based on environmental conditions and load requirements.
Additional services include comprehensive documentation (safety data sheets, compliance certifications, testing reports), training sessions, and technical workshops to keep your team informed about best practices and advancements in fastening technology.

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