Hex Flange Head Self-Drilling Screws

Home / Products / Hex Flange Head Screws / Hex Flange Head Self-Drilling Screws
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.
  • Ningbo Zhenrui Hardware Industrial Co., Ltd.

Hex Flange Head Self-Drilling Screws

Product Introduction

Hex Flange Head Self-Drilling Screws feature a double-thread high-low design and T-17 cutting point, providing efficient drilling and secure fastening for metal-to-metal and construction applications.

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

Core Advantages

1. Efficient Cutting and Drilling

The T-17 cutting point allows Hex Flange Head Self-Drilling Screws to drill through suitable metal materials efficiently during installation. The double-thread design combines a 5.30–5.60 mm high thread diameter with a 4.30–4.60 mm low thread diameter, supporting fast and stable engagement.

2. High Torque Performance

The hexagonal head provides strong tool engagement for installation. The specified 10 N·m torque demonstrates the fastening capability of this Hex Flange Head Screw, making it suitable for applications requiring reliable tightening performance.

3. Stable Flange Head Design

The 14.00–15.00 mm flange diameter provides a broad bearing surface against the fastening material. The recessed flange design also helps maintain stable contact during installation, making the Hex Flange Head Self-Drilling Screw suitable for demanding metal fastening applications.

4. High Surface Hardness

These Self-Drilling Screws are manufactured from SAE C1022A steel, with a surface hardness of ≥550 HV0.3, core hardness of 270–450 HV0.3, and case depth of 0.100–0.230 mm. This combination supports wear resistance and reliable thread performance during installation.

5. Long-Length Options

The Hex Flange Head Self-Drilling Screw is available in nominal lengths from 70 to 300 mm, providing options for assemblies requiring extended fastening depth and longer connection lengths.

Application Scenarios

Metal-to-Metal Fastening
Steel Structures
Metal Roofing
Metal Panels
Construction Projects
Industrial Equipment
Steel Framing
Sandwich Panels
Heavy-Duty Metal Assembly
Wholesale Distribution

OEM / ODM Services

We manufacture Hex Flange 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

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 Hex Flange 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 OEM and ODM customization for head height, raw material wire diameter, and washer thickness.

Q4: What is the production lead time?

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

Q5: What packaging options are available?

We can provide carton, paper box, and plastic bag packaging according to customer requirements.

Description Indented Cupped Flange Head Self-Drilling Screw, Double Thread(B+Hi-low), T-17 Cutting Point
Item DK (Flange Diameter) S (Across Flats) B (Flange Flat) H (Head Height) K (Hex Height) U (Flange Height, min) G (Flange Recess Depth) Da (Flange Recess Inner Dia.) D (High Thread Outer Dia.) D1 (Low Thread Outer Dia.) d (Thread Root Dia.) S (Lead, ±10%) Torque (N.M)
#14/#12 14.00-15.00 7.75-7.92 10.50-10.70 6.10-6.40 3.60-3.90 2.5 0.90-1.40 11.70-12.30 5.30-5.60 4.30-4.60 3.80-4.10 3.4 10

Nominal Length (±2.0) 70 75 90 105 110 115 125 135-300
Thread Length (±2.0) 40 50 55 80 80 80 80 85

Mechanical Properties
Item Specification
Material SAE C 1022A STEEL
Surface Hardness ≥550 HV0.3
Core Hardness 270-450 HV0.3
Case Depth 0.100- 0.230 mm
MOQ  100,000 pcs
Lead Time  45 days


fah1w-2

About Us
Ningbo Zhenrui Hardware Industrial Co., Ltd.

Founded in 2011, we are a comprehensive hardware enterprise integrating R&D, production, sales, and services. Since our establishment, we have adhered to the philosophy of "Innovation-driven, Customer-oriented, Integrity for Win-Win Cooperation". Focused on manufacturing, we are committed to supplying high-quality products to customers. With years of steady development, we have grown into an influential player in the industry.

Our product portfolio covers construction hardware, furniture hardware, automotive hardware accessories, and precision mechanical parts, widely used in residential construction, commercial facilities, transportation vehicles, electronic equipment, and many other industries. By introducing advanced production equipment and technologies, along with a strict quality control system, we ensure that every product meets or exceeds customer expectations.

We advocate a people-oriented corporate culture, value employees’ growth and well-being, and foster a harmonious work environment. The company has formulated basic management systems in accordance with laws. Currently, we are steadily advancing toward group-based, specialized, and international development.

Certificate Of Honor
  • Certificate of Utility Model Patent
  • Quality Management System Certificate
News