Phillips Flat Head Self-Drilling Screws

Product Introduction

Phillips Flat Head Self-Drilling Screws feature a flat head, Phillips drive, and self-drilling point, providing efficient installation and a flush fastening finish for metal panels, steel components, and construction assemblies.

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Core Advantages Application Scenarios OEM / ODM Services Why Choose Us FAQ Technical Parameters Inquiry Form

Core Advantages

1. High Torque Performance

The Phillips Flat Head Self-Drilling Screw has a specified torque of 95 kg-cm minimum, supporting reliable tightening performance for demanding fastening applications.

2. Efficient Self-Drilling Point

With a drill point diameter of 4.45–4.80 mm, these Flat Head Self-Drilling Screws combine drilling and fastening into one operation for suitable metal substrates, helping reduce installation steps in production applications.

3. Consistent Mechanical Performance

Made from C1022 steel, the Phillips Flat Head Self-Drilling Screws feature a surface hardness of a minimum of 560 HV, core hardness of 240–450 HV, and case hardness depth of 0.10–0.23 mm, supporting consistent performance in bulk fastening applications.

Application Scenarios

Metal Panels
Sheet Metal Assembly
Steel Structures
Metal Roofing
HVAC Systems
Electrical Enclosures
Industrial Equipment
Construction Projects
Metal-to-Metal Fastening
Wholesale Distribution

OEM / ODM Services

We manufacture Phillips Flat Head Self-Drilling Screws in our own factory and provide OEM/ODM services for distributors, wholesalers, contractors, and industrial fastener buyers.

Available customization options include:

• Custom head height
• Custom raw material wire diameter
• Custom washer thickness

We support customized production according to confirmed specifications and bulk order requirements. The standard MOQ is 100,000 pcs, with a typical production lead time of 45 days.

Why Choose Us

1. Integrated R&D, Production, Sales and Service

Founded in 2011, we are a comprehensive hardware enterprise integrating R&D, production, sales, and service. With in-house manufacturing and direct factory supply, we can control quality, cost, and lead time more effectively than trading companies.

2. Certified Quality Management System

We hold ISO 9001:2015 certification for our quality management system, covering the production of fasteners. This ensures consistent quality control and reliable production standards for bulk orders.

3. Wide Product Portfolio and Application Coverage

Our products cover construction hardware, furniture hardware, automotive hardware accessories, and precision mechanical parts, widely used in residential construction, commercial facilities, transportation vehicles, electronic equipment, and other industries.

FAQ

Q1: What is the MOQ for Phillips Flat Head Self-Drilling Screws?

The standard MOQ is 100,000 pcs for bulk orders.

Q2: What payment terms do you accept?

We accept cash on delivery according to the agreed order terms.

Q3: Do you provide OEM and ODM services?

Yes. We support customization of head height, raw material wire diameter, and washer thickness for OEM and ODM orders.

Q4: What is the production lead time?

The standard production lead time is approximately 45 days after order confirmation.

Parameter	Specification
Size	M5.5
Head Diameter (A)	9.9–10.6 mm
Head Height (H ref.)	4.50–5.50 mm
Recess Width (M ref.)	6.8 mm
Recess Depth (Q)	3.75–3.85 mm
Drive Size	3
Major Diameter (D)	5.28–5.46 mm
Pitch (P)	1.80 mm
Drill Point Diameter (dp max.)	4.45–4.80 mm
S1	8.0–9.5 mm
S2	13.5–15.0 mm
V	0.20–0.35 mm
Torque	95 kg-cm min.
Wire Diameter	4.25 mm (-0.02 mm)
Nominal Length (L)	65 ± 1.5 mm
Thread Length (S)	38–45 mm
Surface Hardness	Min. 560 HV
Core Hardness	240–450 HV
Material	C1022
Case Hardness Depth	0.10–0.23 mm
Standard	DIN 7504P