Weston Stainless, Midland, UK, is a top manufacturer of high-quality stainless steel products for industrial requirements. Their Stainless Steel 347H Bolts, produced from a stabilized austenitic stainless steel alloy, have high resistance to high-temperature and intergranular corrosion. These bolts are produced in hex, square, U-bolt, and stud bolt forms and meet ASTM A193 and A320 specifications. The increased amount of carbon in SS 347H increases creep strength, and such bolts are best suited for high-temperature and pressure exposure in power plant, petrochemical, and aerospace industries.
Stainless Steel 347H Bolts provide exceptional resistance to high temperature and oxidation. Making it ideal for extreme temperature applications. They are very resistant to corrosion, especially in sulfuric and nitric acid environments. These screws retain strength and stability at elevated temperatures, providing reliable performance under extreme conditions. The addition of columbium improves weldability and resistance to carbide precipitation. Their durability and resistance to thermal expansion make them suitable for use in aerospace, chemical processing and high-temperature industrial applications
Material | Specification | Standards | Size | Length |
Stainless Steel 347H Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 347H |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
| Element | SS 347H |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
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High strength, heat resistant fasteners designed for extreme temperatures and hot environments. They provide excellent oxidation properties and durability, ideal for aerospace and industrial applications.
High heat resistance fastener with a hexagonal head, tailored to specific dimensions. Provides exceptional durability and resistance to extreme heat applications.
Durable high heat resistant fastener with a long threaded shaft and flat head, engineered for durability and stability in extremely hot conditions in
Heat-resistant fastener for concrete or masonry. It expands in the hole as it tightens, providing a firm grip.
Hexagonal head with an integrated flange for improved weight distribution. Provides superior thermal resistance and durability to extreme temperatures and environmental corrosion.
Threads running the full length, for permanent clamping ability and superior heat resistance. They are ideal for demanding applications that require durability and heat resistance.
Stainless Steel 347H Bolts find extensive application in petrochemical facilities, refineries, heat exchangers, and aerospace industries because of their superior resistance to oxidation, stress corrosion cracking, and creep deformation. They are suitable for boiler casings, exhaust manifolds, furnace parts, and high-temperature processing equipment. The bolts provide durability, strength, and corrosion resistance, which makes them a popular choice in industries where high temperatures and aggressive environments are a factor.
Weston Stainless issues Mill Test Certificates (MTC) as per EN 10204 3.1 to ensure quality of the product. SS 347H bolts are packed in wooden crates, corrugated boxes, or plastic wraps for protection during shipment. With efficient global logistics and prompt delivery services, Weston Stainless ensures that industries get high-quality, long-lasting, and performance-driven fastening solutions.
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