Request For Our Latest Prices On SS 347H Bolts in Canberra, Australia!
At Hazlewood Fasteners in Canberra, we specialize in bolts engineered for extreme performance and reliability. Our stainless steel 347H bolts are crafted from niobium-stabilized austenitic stainless steel, designed to resist intergranular corrosion and maintain strength at elevated temperatures. With exceptional tensile strength and dimensional stability, these bolts ensure secure fastening in the harshest industrial and high-temperature environments. Hazlewood Fasteners’ 347H bolts are more than fasteners—they are precision-engineered anchors that deliver enduring performance, keeping assemblies secure and reliable in chemical processing, power generation, and high-temperature automotive applications where resilience and durability are non-negotiable.
Stainless steel 347H bolts are manufactured from austenitic stainless steel alloy containing roughly 17–19% chromium, 9–13% nickel, and niobium for stabilization. This composition prevents carbide precipitation, providing superior resistance to intergranular corrosion and exceptional high-temperature strength. 347H bolts maintain excellent tensile strength, ductility, and dimensional stability under prolonged exposure to elevated temperatures. Their austenitic structure ensures wear resistance, fatigue strength, and mechanical reliability. Designed for extreme environments, these bolts combine durability, corrosion resistance, and thermal stability, delivering secure, long-lasting fastening in demanding industrial, chemical, and high-temperature applications.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347H | min. | 0.04 | – | – | – | – | 17.0 | 3.00 | 9.0 | – |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 19.0 | 4.00 | 13.0 | – | |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.96 g/cm3 | 1450 °C | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts. |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless steel 347H bolts are widely used in chemical processing plants, power generation equipment, high-temperature piping, boilers, and automotive exhaust systems. Their stabilized austenitic composition ensures reliability under prolonged thermal exposure and resistance to intergranular corrosion. These bolts are ideal for structural assemblies, high-temperature machinery, and industrial equipment where mechanical integrity and long-term durability are critical. Hazlewood Fasteners’ 347H bolts provide secure, vibration-resistant fastening, maintaining assembly stability even under thermal cycling and mechanical stress. Engineered for performance, these bolts deliver strength, resilience, and precision, ensuring critical connections remain tight and dependable in the harshest operating environments.
We at Hazlewood Fasteners maintain the exacting quality standards of our stainless steel 347H bolts, which is demonstrated by careful labeling. Our commitment is reflected in the trading invoices that go.” beyond, durable packaging, fumigation certificates, complete heat treatment records and strict quality control programs up to MTCs , PMI test certificates, and 100%; complete radiography test certificates further prove our commitment to excellent quality and reliability, so that each bolt is wrapped with the utmost care using protective materials to prevent damage at transport, guaranteeing arrival in optimum condition, ready for immediate use in demanding applications.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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