Best Stainless Fasteners from China Manufacturer

Stainless Steel Fasteners

Explore our extensive stainless steel fasteners range, showcasing austenitic, ferritic, and martensitic grades for a variety of industrial uses. From robust industrial options to specialized corrosion-resistant designs, we provide diverse material compositions and finishes to suit your unique needs. Our expertise spans multiple stainless steel types, delivering top performance and value across various price levels. Whether you require standard or bespoke specifications, our skilled team offers customized solutions supported by industry knowledge.

201 Stainless Steel Fasteners

Specifications: Standards and Classifications

Stainless Steel Screwsare governed by standards like ASTM A193, A194, and A320, ensuring quality across grades such as 304, 316, 410, and 2205. These standards define properties like corrosion resistance, strength, and finish. For instance, a 304 Stainless Steel Fastener aligns with ASTM A193 for general use, while 316 offers superior corrosion resistance per the same spec. Classifications split into austenitic (e.g., 304, 316), ferritic (e.g., 430), and martensitic (e.g., 410) types, with grades further distinguished by finishes like polished or coated options. Stainless Steel Fasteners, typically ranging from M3 to M100 in size, adhere to similar standards but are often tailored for structural applications.

Size Range: Dimensions and Customization

Stainless Steel Fasteners come in a wide range of sizes to suit diverse needs. Common dimensions include:

  • Diameter and Length: Standard sizes like M3 to M12 bolts dominate, though options range from M2 (0.079″) to M100 (3.94″) in diameter and lengths from 10mm (0.39″) to 300mm (11.8″).
  • Thickness/Thread: Thread sizes start at coarse (e.g., 1.0mm pitch) and go up to fine (e.g., 0.5mm pitch), while heavy-duty fasteners begin at M12 and can exceed M50 for thicker variants.
  • Custom Options: Suppliers offer cut-to-size services, allowing buyers to specify exact dimensions for stainless steel fastener diameter, length, or thread needs.

This flexibility ensures ss fasteners fit everything from small fabrications to large industrial builds.

Types: Forms, Processes, and Finishes

Stainless Steel Sheet and Stainless Steel Plate come in various forms and finishes, each tied to specific manufacturing processes:

  • Forms: Flat stainless steel sheet metal, stainless steel perforated sheet (with round or custom holes), and diamond plate patterns for added grip.
  • Processes: Cold rolled stainless steel sheet offers a smooth, precise finish (e.g., 2B finish stainless steel), while hot rolled stainless steel sheet suits thicker, less polished applications like Stainless Steel Plate.
  • Surface Treatments: Options include 2B (smooth, matte), No. 4 (brushed), BA (bright annealed), and polished finishes. Stainless steel perforated sheet adds functionality with hole patterns for filtration or aesthetics.

Applications: Common Grades and Uses

GradeCharacteristicsApplications
304 Stainless Steel FastenersExcellent corrosion resistance, Good formability and weldability, Non-magnetic, Moderate strengthFood processing equipment (e.g., bolts, nuts), Architectural fixtures, Automotive parts (e.g., screws), Kitchen appliances
316 Stainless Steel FastenersSuperior corrosion resistance (especially in chloride environments), High durability, Non-magneticMarine hardware (e.g., fittings), Chemical plant fasteners, Surgical tools, Coastal structures
201 Stainless Steel FastenersGood corrosion resistance, Lower cost than 304, Moderate strength, MagneticAutomotive assemblies, Appliance fittings, Decorative hardware, Industrial fasteners
303 Stainless Steel FastenersExcellent machinability, Good corrosion resistance, Non-magnetic, Moderate strengthPrecision machinery (e.g., screws), Electrical enclosures, Pump components, General industrial use

Frequently Asked Questions

Q:What are the fasteners for stainless steel?

A:Stainless steel fasteners include bolts, nuts, screws, and washers, available in grades like 304 and 316. They’re used to join stainless steel components in corrosive environments like marine or chemical plants.

Q:What are the disadvantages of stainless steel fasteners?

A:Stainless steel fasteners can be expensive, prone to galling (cold welding) during installation, and less strong than alloy steel in high-temperature or high-stress applications unless heat-treated.

Q:What is the ISO standard for stainless steel fasteners?

A:The ISO standard for stainless steel fasteners is ISO 3506, which specifies mechanical properties and corrosion resistance for grades like A2 (304) and A4 (316) across various sizes and applications.

Q:What is the difference between 304 and 316 fasteners?

A:304 stainless steel fasteners offer good corrosion resistance for general use, while 316 fasteners, with added molybdenum, excel in marine and chloride-rich environments due to superior pitting resistance.

Q:What grade of stainless steel for fasteners?

A:The best grade depends on the application: 304 is suitable for indoor or mild outdoor use, while 316 is preferred for marine or chemical settings. For high strength, 17-4 PH stainless steel is also an option.

Q:What is the best steel for fasteners?

A:For corrosion resistance, stainless steel grades like 316 are best for harsh environments. For high strength, alloy steels with heat treatment may outperform, but 316 stainless steel strikes a balance for most applications.

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