ISO 7380-2 Hex Socket Button Head Screw with Flange
ISO 7380-2 hex socket button head screw with flange is a compact fastening solution designed for assemblies that need a low-profile head, reliable torque transmission, and improved bearing pressure distribution. The ISO 7380-2 hex socket button head screw with flange combines a rounded button head, an internal hex drive, and an integrated flange. This design reduces the need for a separate flat washer in many assemblies.
Available in stainless steel and carbon steel, the ISO 7380-2 hex socket button head screw with flange supports different corrosion, strength, and cost requirements. Stainless steel versions suit humid, outdoor, food equipment, and corrosion-sensitive applications. Meanwhile, carbon steel versions offer higher strength options and cost-effective performance for machinery, automotive equipment, automation systems, and general industrial assemblies.
Product Overview
The ISO 7380-2 hex socket button head screw with flange is designed according to ISO 7380-2 dimensional requirements. Its low rounded head provides a clean appearance and requires less vertical clearance than many conventional hex head bolts.
In addition, the integrated flange increases the contact area under the screw head. Therefore, clamping force spreads across a wider surface, which can help protect softer mating materials and improve assembly stability.
The internal hex drive supports controlled tightening with standard Allen keys or automated assembly tools. As a result, this ISO 7380-2 hex socket button head screw with flange works well in compact machinery, sheet metal assemblies, brackets, enclosures, and OEM equipment.
For buyers comparing industrial fasteners, this product offers a practical combination of low head height, efficient installation, and material flexibility.
Product Specifications
| Item | Description |
|---|---|
| Standard | ISO 7380-2 |
| Product Name | ISO 7380-2 Hex Socket Button Head Screw with Flange |
| Material | Stainless Steel 304 / 316; Carbon Steel |
| Thread Type | Metric Machine Thread |
| Head Type | Button Head with Integrated Flange |
| Drive Type | Internal Hex / Allen Drive |
| Diameter Range | M3–M16, subject to production specification |
| Length Range | 6mm–120mm or custom |
| Surface Finish | Natural Stainless Steel / Passivated / Zinc Plated / Black Oxide / Custom |
| Strength Grade | A2-70 / A4-70 / Carbon Steel 8.8 / 10.9, subject to specification |
| Thread Direction | Right Hand |
| Packaging | Bag, carton, pallet, OEM packaging |
| Customization | Material, dimensions, finish, marking, thread length, packaging |
Technical Parameters
| Parameter | Typical Value or Requirement |
|---|---|
| Tensile Strength | Depends on material and property class |
| Yield Strength | Depends on stainless steel class or carbon steel grade |
| Hardness | Controlled according to specified material and property class |
| Density | Stainless Steel: approx. 7.9–8.0 g/cm³; Carbon Steel: approx. 7.85 g/cm³ |
| Corrosion Resistance | Excellent for stainless steel; coating-dependent for carbon steel |
| Operating Temperature | Determined by material grade, coating, load, and service environment |
| Thread Tolerance | Commonly 6g or according to order specification |
| Manufacturing Standard | ISO 7380-2 |
Materials and Manufacturing Process
Material selection is the first step in producing an ISO 7380-2 flange button head screw. Stainless steel wire is selected for corrosion resistance and clean surface requirements. Carbon steel wire is selected when mechanical strength, heat treatment response, and production economy are key factors.
Cold forging forms the button head, flange, and shank for standard production sizes. Because flange geometry affects bearing contact, tooling accuracy is carefully controlled. For special dimensions or prototype quantities, CNC machining may be used to create non-standard features.
Next, thread rolling forms the external thread through material displacement rather than cutting. This process supports consistent thread geometry and good fatigue behavior. Carbon steel screws can then undergo quenching and tempering when the specified strength grade requires heat treatment.
Surface finishing depends on the selected material. Stainless steel screws may receive cleaning and passivation. Carbon steel screws can be supplied with zinc plating, black oxide, zinc-nickel coating, or another specified protective finish.
Finally, the parts are cleaned, inspected, counted, and packed. Inspection focuses on flange diameter, head height, hex socket dimensions, thread accuracy, overall length, surface condition, and material identification.
Applications of the Product
The ISO 7380-2 hex socket button head screw with flange is used across construction equipment, machinery, automotive assemblies, renewable energy systems, petrochemical auxiliary equipment, marine applications, food equipment, industrial equipment, and manufacturing systems.
In automation equipment, it can secure guards, sensor brackets, covers, and compact structural components. In automotive systems, the low-profile head suits interior mechanisms, brackets, housings, and equipment assemblies.
Stainless steel versions are suitable for moisture-prone equipment, food machinery, outdoor enclosures, and clean production environments. Carbon steel versions are often selected for machine building, automation frames, industrial fixtures, and equipment where higher property classes are required.
Why Choose This Product
The integrated flange is a key engineering advantage. It increases the bearing area beneath the head and can simplify the bill of materials by eliminating a separate washer in suitable applications.
Moreover, the internal hex drive provides efficient torque transfer in confined assembly areas. The rounded head creates a smooth profile, while the wide flange improves contact stability.
Buyers can select stainless steel for corrosion resistance or carbon steel for strength and cost optimization. Additional benefits include high-precision manufacturing, stable mechanical performance, long service life, bulk supply capability, OEM/ODM support, fast delivery, and export packaging experience.
The ISO 7380-2 hex socket button head screw with flange can also be customized for specific equipment and assembly requirements.
Why Choose Flybear
Flybear supplies standard and custom fastening products for industrial customers, distributors, OEM manufacturers, and engineering projects.
Manufacturing capabilities support cold forming, thread rolling, CNC machining, heat treatment coordination, surface finishing, and customized packaging. Inventory planning also supports repeat orders and mixed-size purchasing requirements.
For custom production, engineering teams can review drawings, samples, materials, surface finishes, and installation conditions. Technical consultation helps buyers select stainless steel or carbon steel based on corrosion exposure, load requirements, assembly method, and target service life.
In addition, global supply experience supports export packaging, documentation coordination, and order planning for international purchasing programs.
Quality Inspection and Control
Quality control begins with raw material verification and continues throughout forming, threading, finishing, and packaging. The inspection plan can include chemical composition analysis, tensile testing, hardness testing, salt spray testing, thread gauge inspection, dimensional inspection, surface inspection, and packaging inspection.
For the hex socket, gauges and measuring equipment verify drive dimensions and engagement quality. Meanwhile, flange diameter, flange thickness, head height, thread length, and overall length are checked against the applicable drawing or ISO 7380-2 requirements.
Production and inspection procedures operate within an ISO quality system compliance framework. Inspection documentation can be discussed according to project and order requirements.
Selection Guide
Start by choosing the correct material. Stainless steel is suitable when corrosion resistance, appearance, or hygiene is important. Carbon steel is often preferred when higher strength classes or cost efficiency are priorities.
Next, confirm thread diameter and screw length. Engineers should also review clamping thickness, thread engagement, tightening torque, mating material, and available head clearance.
Environmental conditions are equally important. For indoor dry machinery, coated carbon steel may provide a practical solution. For outdoor, humid, coastal, or washdown environments, stainless steel should be evaluated according to the actual corrosion level.
Finally, verify whether the integrated flange provides sufficient bearing area for the mating material. Soft plastics, thin sheets, and delicate surfaces may require additional engineering review before production approval.
FAQ
What is ISO 7380-2?
ISO 7380-2 specifies hexagon socket button head screws with an integrated collar or flange configuration.
What is the advantage of the integrated flange?
The flange increases the bearing area beneath the head. In suitable assemblies, it can distribute pressure and reduce the need for a separate washer.
Should I choose stainless steel or carbon steel?
Choose stainless steel for corrosion-sensitive environments. Choose carbon steel when higher strength options and cost efficiency are more important.
Can custom sizes and surface finishes be produced?
Yes. Custom dimensions, materials, thread lengths, surface treatments, markings, and packaging can be produced according to drawings and order requirements.
How do I request a quotation?
Provide the thread size, length, material, strength grade, surface finish, quantity, and drawing if available. Application details also help engineers review the correct specification.
The ISO 7380-2 hex socket button head screw with flange provides a compact head profile, efficient Allen drive installation, and improved bearing load distribution. It is available in stainless steel and carbon steel for diverse industrial fastening conditions.
For quotation, customization, material selection, and technical support, please Contact Us.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
