ASTM A193 B7 Stud Bolts with A194 2H Nuts

Reliability in the Most Severe Environments
Long Service Life and Low Maintenance Costs
Stable Performance in Weld‑Affected Zones

ASTM A193 B7 Stud Bolts with A194 2H Nuts Supplier

SSM provides ASTM A193 B7 stud bolts paired with ASTM A194 2H heavy hex nuts, manufactured from heat-treated chromium-molybdenum alloy steel for high-strength bolting applications. These fastening sets are engineered for reliable performance in high-pressure and high-temperature environments, offering excellent mechanical strength, load-bearing capability, and secure flange connections in demanding industrial service.

Stud Diameter: 1/2″ to 4″
Stud Length: 50 mm to 1000 mm (custom cutting per drawing)
Tipo de hilo: Full thread or double-end thread; UNC or UNF as required
Nut Type: ASTM A194 2H heavy hex nuts; one or two nuts per stud
Surface Finish: Plain, black oxide, zinc plated, hot dip galvanized (HDG), PTFE/Xylan/Teflon coating

ASTM A193 B7 / ASTM A194 2H Fasteners Technical Data

Chemical Composition (ASTM Standard Requirements)

ASTM A193 Grade B7 — Bolts / Studs

Elemento	do	Minnesota	Si	Cr	Mes	PAG	S
Content %	0.37–0.49	0.65–1.10	0,15–0,35	0.75–1.20	0,15–0,25	≤0,035	≤0,040

ASTM A194 Grade 2H — Nuts

Elemento	do	Minnesota	PAG	S	Si
Content %	0.37–0.49	0.65–1.10	≤0,035	≤0,040	≤0,40

Propiedades mecánicas

ASTM A193 Grade B7 — Bolts / Studs

Propiedad	Requisito
Resistencia a la tracción	≥ 860 MPa (125 ksi)
Fuerza de fluencia	≥ 720 MPa (105 ksi)
Alargamiento	≥ 16%
Dureza	HRC 25–35

ASTM A194 Grade 2H — Nuts

Propiedad	Requisito
Proof Load	≥ 600 MPa
Dureza	HRC 24–38

ASTM A193 B7 / ASTM A194 2H Fasteners Applications

ASTM A193 B7 stud bolts paired with ASTM A194 2H heavy hex nuts are specifically designed for high-pressure and high-temperature bolting systems. Their heat-treated chromium-molybdenum alloy steel construction provides high strength, excellent load retention, and reliable joint integrity under demanding service conditions.

These fasteners are widely used in:

ASME B16.5 and ASME B16.47 flange connections
Oil and gas pipelines and processing facilities
Petrochemical and chemical plants
Power generation systems and boilers
Pressure vessels and heat exchangers
Valves, pumps, and critical piping systems
Offshore and refinery projects

Thanks to their superior mechanical performance and thermal stability, A193 B7 / A194 2H bolting sets are the industry-standard choice for structural and pressure-containing joints operating at temperatures up to approximately 450°C.

Proveedor integral de bridas para todas sus necesidades

SSM has significant product advantages in manufacturing ASTM A193 B7 / ASTM A194 2H Fasteners. Whether it’s quality or price, we will meet your needs.

ASTM A193 B7 / ASTM A194 2H Fasteners Standards and Specifications

Categoría	Standard / Specification	Descripción
Bolt Material Standard	ASTM A193 Grade B7	Heat-treated Cr-Mo alloy steel stud bolts / hex bolts
Nut Material Standard	ASTM A194 Grade 2H	Heat-treated carbon steel heavy hex nuts
Washer Standard (Optional)	ASTM F436	Hardened flat washers
Thread Standard	ASME B1.1	UNC / UNF thread form
Stud Bolt Dimensions	ASME B18.31.2	Dimensional requirements for stud bolts
Hex Bolt Dimensions (if applicable)	ASME B18.2.1	Dimensional requirements for hex head bolts
Heavy Hex Nut Dimensions	ASME B18.2.2	Dimensional requirements for heavy hex nuts
Propiedades mecánicas	ASTM A193 / ASTM A194	Tensile, yield, hardness and proof load requirements
Flange Compatibility	ASME B16.5 / ASME B16.47	Pressure flange bolting requirements
Tratamiento de superficies	ASTM B633 / ASTM A153	Zinc plating / Hot dip galvanizing standards
PTFE / Xylan Coating	Per customer specification	Anti-corrosion and low-friction coating
Inspection & Testing	ASTM A193 / ASTM A194	Mechanical testing, marking and traceability
Service Temperature	≤ 450°C	Suitable for high-temperature pressure service

ASTM A193 B7 stud bolts combined with ASTM A194 2H heavy hex nuts are high-strength, heat-treated chromium-molybdenum alloy steel fasteners designed for demanding high-pressure and high-temperature applications. They provide excellent tensile strength, proof load, and reliable flange connections in industrial systems.

These bolting sets are manufactured according to ASTM material standards con UNC/UNF threads per ASME B1.1 y dimensional compliance with ASME B18 series. Optional coatings include black oxide, zinc plating, hot-dip galvanizing, or PTFE/Xylan for enhanced corrosion resistance.

Aplicaciones include ASME B16.5 / B16.47 flanges, pressure vessels, piping systems, valves, pumps, petrochemical plants, power generation, and offshore projects. Service temperature suitability is up to 450°C, making them a trusted choice for critical industrial and pressure-containing joints.

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