Wholesale Oval Head Six Lobe Self Drilling Screw Suppliers, Exporter, OEM/ODM Factory

Specification: M5.5-2.0*78

Material: SUS304

Surface Treatment: Brightening

Product Introduction

The Oval Head Six Lobe Self-Drilling Screw is designed for metal fastening applications requiring a low-profile head with enhanced drive engagement and aesthetic appearance. The oval head configuration provides a low-profile finish that sits close to the workpiece surface, offering a smooth appearance while providing adequate bearing surface for clamping. The six-lobe drive enables positive torque transmission with reduced cam-out risk during installation, providing reliable engagement with standard six-lobe tools. The self-drilling point drills and taps threads simultaneously, eliminating pilot hole requirements and reducing assembly time. Manufactured from SUS304 stainless steel with brightening surface treatment, this screw provides general corrosion resistance with an aesthetic bright finish. The M5.5-2.0 thread specification with 78mm length offers extended engagement for structural connections and metal assemblies requiring a low-profile aesthetic.

Core Advantages

Oval Head Design

Low-profile head sits close to the workpiece surface, providing a smooth appearance and adequate bearing surface for clamping.

Six-Lobe Drive

Positive torque transmission with reduced cam-out risk during installation for reliable drive engagement.

Self-Drilling Point

Drills and taps threads in a single operation, eliminating pilot hole requirements and reducing installation time.

SUS304 Stainless Steel

Provides general corrosion resistance for indoor and mild outdoor applications with a bright aesthetic finish.

Brightening Treatment

Aesthetic bright finish with enhanced surface smoothness and improved corrosion resistance.

Extended Length

78mm length provides extended engagement for structural connections and metal assemblies requiring a low-profile aesthetic.

Product Features

Oval head configuration Low-profile design sits close to the workpiece surface, providing a smooth appearance with adequate bearing surface for clamping in visible applications.

Six-lobe drive Positive torque transmission with reduced cam-out risk during installation, compatible with standard six-lobe tools for reliable engagement.

Self-drilling point Drills and taps threads simultaneously, eliminating pilot hole drilling and reducing installation steps.

SUS304 stainless steel material Provides general corrosion resistance for indoor and mild outdoor applications with a bright aesthetic finish.

Brightening surface treatment Aesthetic bright finish with enhanced surface smoothness and improved corrosion resistance.

M5.5-2.0 thread specification Metric thread configuration provides consistent performance for structural connections and metal assemblies.

78mm length Extended length provides engagement for structural connections and metal assemblies requiring a low-profile aesthetic.

Application Scenarios

Architectural metalwork

Visible structural connections

Furniture construction

Aesthetic metal assemblies

Interior applications

Equipment enclosures

Industrial design

Custom metal fabrications

This oval head six-lobe self-drilling screw is deployed in metal fastening applications requiring a low-profile aesthetic appearance with positive drive engagement. Applications include architectural metalwork where visible fasteners must maintain a smooth appearance, visible structural connections where aesthetics are important, furniture construction, aesthetic metal assemblies, interior applications, equipment enclosures, industrial design projects, and custom metal fabrications where the oval head provides a low-profile finish and the brightening treatment offers an attractive appearance.

Common Questions and Solutions

What are the advantages of the oval head design?

The oval head provides a low-profile finish that sits close to the workpiece surface, offering a smooth, unobtrusive appearance. It provides adequate bearing surface for clamping while maintaining a streamlined aesthetic suitable for visible applications.

What is the six-lobe drive and what are its benefits?

The six-lobe drive provides positive torque transmission with reduced cam-out risk compared to Phillips or other cross drive types. The design allows for higher torque transfer during installation and reduces the risk of drive stripping for reliable and consistent fastening.

What is the recommended six-lobe tool size for this screw?

Select a six-lobe driver that matches the head size specified for the M5.5 thread. Refer to the product specification for the exact six-lobe size required for installation.

What is the difference between SUS304 and other stainless steel grades?

SUS304 is an austenitic stainless steel that provides general corrosion resistance suitable for indoor and mild outdoor applications. It offers good formability and an attractive bright finish, making it suitable for aesthetic applications where corrosion resistance is required.

What material thickness can the M5.5-2.0*78 screw accommodate?

The M5.5-2.0 specification with 78mm length provides extended engagement for structural connections and metal assemblies. The actual maximum material thickness depends on the drill point length and substrate hardness. Consult the technical datasheet for specific thickness recommendations.

What is the recommended installation speed for this screw?

Install at controlled speeds to avoid overheating the drill point. Excessive speed may reduce drill point life and cause thread stripping. Use torque-controlled drivers to prevent over-tightening when the oval head seats against the workpiece surface.

Installation Considerations

Select the correct six-lobe driver size that matches the screw head recess to ensure positive engagement and prevent drive wear during installation.

Use torque-controlled installation tools to prevent over-driving. The oval head should seat against the workpiece surface without damaging the head or surrounding material.

Apply appropriate spindle speed based on material hardness; excessive speed may reduce drill point life and cause thermal damage to the brightening finish.

Ensure perpendicular alignment between screw axis and workpiece surface to prevent drill point deflection and ensure clean hole formation.

The brightening treatment provides aesthetic and corrosion protection. Handle screws with clean gloves to maintain surface appearance and prevent contamination.

For applications requiring specific torque values, consult the technical datasheet for recommended installation parameters.