Stainless Steel Flange Head Screws
Weight Range ： 0.5g–500kg
Dimensional tolerance ： ±0.1mm
Please provide product specifications so that we can offer specific pricing and MOQ.
Stainless steel flange head screws are high performance fasteners. It combines high strength, corrosion resistance and easy installation. Its core material is A2-70 or A4-80 stainless steel that meets international standards. The tensile strength can reach more than 700 MPa and can withstand severe mechanical loads. The one-piece flange head is its key design. The flange diameter is usually 1.8 times the thread diameter. This can reduce the pressure on the contact surface by approximately 40%, effectively protecting the connected surfaces. The product is electrolytically polished and passivated. It can pass the neutral salt spray test for more than 72 hours, providing long-term rust protection in humid environments.
The screw also has excellent resistance to loosening. The enlarged flange contact surface provides additional anti-slip friction. In a vibration environment, its anti-loosening performance is about 30% higher than that of ordinary screw combinations. Taking the commonly used M6 specification as an example, it can achieve an installation torque of 8 to 12 N·m under standard conditions, ensuring uniform and reliable preload force.
Parameter
JOYEAR provides high-volume, highly efficient export solutions for industrial components to clients worldwide. Our custom metal products are expertly crafted. If you send us your design files, whether they are digital drafts or prototypes, our talented team will precisely create tangible parts that satisfy your requirements.
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Reference Standard |
DIN 7981 / ISO 7380 / GB/T 6187.1 |
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Surface Treatment |
Electropolishing Chemical Passivation |
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Salt Spray Test |
≥ 72 - 120 h |
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Torque Performance (M6) |
8 - 12 N·m |
★ Our product range includes:
► Materials: Carbon steel / Mild steel / Structural steel / Stainless steel / Aluminum / Copper, etc.
► Forms: Sheets / Profiles / Tubes / Round bars / Flat bars / Square bars, etc.
Drawing Design & Confirm
Obtain drawings from clients or produce drawings based on their samples or specifications.
The drawings, product raw materials, surface treatment, and other details are attested to by both parties.
Advantages
Damage protection
The flange head and the screw body are integrally formed. The flange diameter is usually 1.8 times the thread diameter. This significantly increases the contact area. The contact surface pressure can be reduced by about 40%.
It can effectively prevent indentation damage to soft materials such as aluminum alloys and plastics. At the same time, the increased contact surface also provides additional anti-slip resistance. Stronger connection in vibrating environments.
Anti-fatigue properties
The integrated structure eliminates the displacement problem of independent washers. This makes the force distribution more even. For products that meet the DIN 7981 standard, their anti-lateral vibration fatigue performance is improved by approximately 30%.
It maintains the preload force longer in the DIN 65151 standard vibration test. It is very suitable for vehicles, motors and other places where there is continuous vibration.
Optimized stress distribution
The transition between the bottom of the flange head and the screw adopts a precision rounded design. Finite element analysis shows that this design can reduce the stress concentration factor by approximately 60%.
Taking M8 screws as an example, under the same pretightening force, the peak stress on its head is more than one-third lower than that of ordinary flat head screws. This significantly increases fatigue life and reduces the risk of head cracking.
Material customizability
In addition to the standard A2-70 and A4-80 materials, high-strength options are also available. For example, A4-100 has a tensile strength of more than 1000MPa. Special materials resistant to high temperatures are also available.
Dimensions such as flange diameter support non-standard customization, and the adjustment range can reach ±20% of the standard value. This flexibility allows engineers to optimize selections for specific operating conditions and achieve the best balance.
why choose us
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Effective damage prevention
- The contact area increases by approximately 80%. Significantly reduces surface pressure. Protect soft material surfaces.
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Easy and efficient installation
- The internal hexagonal drive fits precisely. Tools are less likely to slip. Assembly efficiency is significantly improved.
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Excellent fatigue resistance
- The one-piece structure bears uniform force. Vibration fatigue resistance is improved by about 30%. Suitable for dynamic load situations.
Price & Order
Provide a quote, ensure that the order quantity is accurate,
and include all relevant details, such as the terms of payment, the terms of trade, the type of packaging, etc.
Production & Shipping
Follow the original drawings and samples exactly when producing the goods.
It was carefully packaged and delivered to the clients following a final inspection.
★ ★ ★ F A Q ★ ★ ★
How long does the delivery usually take?
- It will be shipped within 3-7 days after payment. Large quantity orders require 4-6 weeks of production time.
Does the price include shipping and export documents?
- The quotation is usually the price of FOB China's major ports. We will provide a full set of export documents (invoice, packing list, certificate of origin, etc.), and sea/air freight needs to be calculated separately according to the destination.
Can material certification (MTC) be provided?
- Of course, each batch of shipments can be provided with a material report that complies with ISO 3506 standards. This is our standard service.
What should I do if there are quality problems after the goods arrive at the port?
- We provide 12 months quality guarantee. If any problems are found during the arrival inspection, please provide photos and videos. We will respond within 48 hours and be responsible for replacement or claim settlement.
What are the packaging options?
- The standard is industrial boxing + outer carton. We can also make retail elevators, environmentally friendly simple decoration or affix customer labels according to your requirements.
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