Discover our high-precision custom fasteners designed for extreme environments.
The 1/4-20 stainless steel bolt represents the "Gold Standard" in unified imperial threading, serving as the backbone for thousands of industrial applications across North America, Europe, and the burgeoning manufacturing hubs of Asia. In 2024-2025, the global market for stainless steel fasteners has seen a significant shift toward Grade 316 and Duplex stainless steels, driven by the increasing need for infrastructure longevity in corrosive coastal and chemical environments.
As a leading 1/4-20 Stainless Steel Bolts Supplier & Exporter, we recognize that "Standard" is no longer enough. The industry is moving toward "Customization at Scale." Whether it is the aerospace sector requiring non-magnetic properties or the marine industry demanding resistance to chloride-induced stress corrosion cracking (CSCC), the 1/4-20 bolt is the versatile hero of modern engineering.
The global industrial fastener market is projected to reach $110 billion by 2030, with stainless steel segments growing at a CAGR of 5.5% due to EV infrastructure and renewable energy projects.
1/4-20 bolts are critical in secondary structural assemblies and avionics mounting, where material reliability and weight-to-strength ratios are non-negotiable.
Grade 304 and 316 stainless steel 1/4-20 bolts are the primary choice for yacht construction and offshore oil platform instrumentation, providing decades of service life.
We have formulated the most stringent sampling inspection system, so as to strive to achieve zero defects for the products out of our factory.
At present, our entire group has more than 100 utility model patented products and eight invention patented products.
We currently operate nearly 100,000 product models, with 500 tons of special raw materials in stock and 10,000 tons of finished stainless steel standard parts in stock.
The roadmap for 1/4-20 stainless steel bolts involves three major technological pillars:
| Property | 304 Stainless | 316 Stainless | Duplex 2205 |
|---|---|---|---|
| Tensile Strength | 75,000 psi | 75,000 psi | 95,000 psi |
| Corrosion Resistance | Good | Excellent | Superior |
| Magnetic Permeability | Low | Very Low | Ferromagnetic |
| Primary Application | General Industrial | Marine/Chemical | High Pressure |
Beiersdorf Industrial Technology (Shanghai) Co., Ltd. was established in 2015 and is located in Shanghai, China. It is an enterprise mainly engaged in the business of special fasteners and ultra-high precision components.
“Product quality is the foundation for an enterprise's survival.”
“Heart to sunshine, everything to prosperity”
We provide Vendor Managed Inventory (VMI) services for 1/4-20 bolts, ensuring that your production lines in Europe or North America never face downtime due to component shortages.
Our engineers work directly with your R&D department to modify 1/4-20 bolt head styles (Hex, Socket, Torx) and lengths to meet proprietary mechanical requirements.
Every shipment is accompanied by Mill Test Reports (MTRs) and complies with international standards including ASTM A193, ASME B18.2.1, and ISO 3506.
Our special fasteners are widely used in the field of shipbuilding and oceanography engineering, specifically in the manufacture of special ships, marine propulsion, marine accessories, yacht manufacturing, offshore oil drilling platforms, submarine pipelines, offshore wind power, underwater lifeboats, port machinery, dock construction, etc.
Materials include: A4-80, A5-80, D8-80, D6-70, 2205, L7, 40CrNiMoA, 718, EN14399 steel structure connection pairs, and classification society certificate fasteners.
"1/4" represents the nominal major diameter of the bolt in inches, while "20" signifies the number of threads per inch (TPI). This is a Coarse Thread (UNC) standard widely used for its ease of assembly and resistance to cross-threading.
While zinc-plated steel offers temporary protection, stainless steel provides inherent corrosion resistance throughout the material. For outdoor, marine, or chemical applications, Grade 304 or 316 stainless steel prevents rust that can lead to structural failure.
Yes. Our low-temperature fasteners are designed to remain stable down to -270℃. Unlike standard carbon steel, which becomes brittle, our specialized stainless and nickel alloys maintain toughness at absolute zero temperatures.
Absolutely. As an exporter, we offer custom head stamping for bulk orders, allowing OEMs to include their logo, grade marks, or batch tracking codes directly on the bolt head.
Beiersdorf is not only a supplier of special fasteners, but also can provide various technical consultations and guidance related to fasteners, including selection and maintenance.
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