Larger Bearing Surface
Provides better load distribution and reduces stress on connected components.
IFI 538 Metric Heavy Hex Flange Screw
- Standard: IFI 538
- Material: Stainless Steel, Carbon Steel
- Thread Size: M2-M12
- Surface Treatment: Plain, Zinc Plated
- Min Order: 5000pcs
- Sample: Free sample (after quote)
- Delivery time: 30 – 45 Days
Product Overview
Product Application
IFI 538-1982 Metric Heavy Hex Flange Screws are heavy-duty metric flange fasteners designed with a large hexagonal head and integrated flange bearing surface. Compared with standard hex bolts, the flange structure increases the load-bearing area, reduces surface pressure, and eliminates the need for separate washers in many applications.
Manufactured according to IFI specifications, IFI 538 flange screws are widely used in automotive, machinery, construction equipment, and industrial assembly applications where high mechanical strength and reliable clamping performance are required.
As an experienced fastener manufacturer, we provide OEM customization, multiple material options, surface treatments, and strict quality control to meet global industrial requirements.
Draw & Specification
IFI 538 vs Standard Hex Flange Bolts
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IFI 538 Heavy Hex Flange Screws
- Heavy Hex Head Design – Larger head size provides higher torque capacity and stronger tightening performance.
- Large Bearing Flange – Increases contact area, improves load distribution, and reduces surface pressure.
- High Load Capability – Designed for heavy-duty applications requiring enhanced strength and stability.
- Washer-Free Assembly – Integrated flange can replace a separate washer in many applications.
- Typical Applications – Heavy machinery, automotive systems, construction equipment, and structural assemblies.
- Standard Hex Flange Bolts
- Standard Hex Head Design – Suitable for general fastening requirements.
- Smaller Flange Area – Provides basic load distribution performance.
- General Strength Performance – Used for conventional industrial fastening applications.
- Washer May Be Required – Additional washers may be needed depending on assembly conditions.
- Typical Applications – General machinery, equipment assembly, and everyday industrial fastening.
Product Advantages
Higher Torque Performance
Heavy hex head enables stronger tightening force and reliable fastening.
Stable Heavy-Duty Connection
Ensures excellent strength and durability under vibration and high loads.
Common Questions
What is IFI 538?
IFI 538 is a standard specification for Metric Heavy Hex Flange Screws featuring a heavy hex head with an integrated flange bearing surface.
What is the difference between IFI 538 and IFI 536?
IFI 538 uses a heavy hex flange design with larger head dimensions and higher load capacity, while IFI 536 is a standard metric hex flange screw.
Can IFI 538 screws be customized?
Yes. OEM dimensions, materials, finishes and packaging are available.
Is IFI 538 equivalent to DIN 6921?
IFI 538 is similar in function to flange bolt standards such as DIN 6921, but dimensional requirements and specifications are different.
