Round Washer Head Self-Tapping Screws

Core Advantages

1. Wide Bearing Surface for Stable Fastening

The integrated round washer head provides a larger bearing area than a conventional narrow head design, helping distribute the clamping load over the fastening surface. This head configuration is commonly used where a broad bearing surface is required.

2. Reliable Self-Tapping Performance

These Self-Tapping Screws are designed to form mating threads during installation, making them suitable for applications where components require direct fastening without a pre-threaded nut or insert. Round Washer Head Screws are available for metal and general assembly applications where stable material engagement is required.

3. Controlled Heat Treatment

The Round Washer Head Self-Tapping Screws are cemented, hardened, and tempered, with a surface hardness of 530 HV 0.3 minimum, core hardness of 320–420 HV 5, and a case depth of 0.10–0.23 mm. This controlled heat treatment supports consistent mechanical performance during production and installation.

4. Zinc-Plated Surface Protection

The screws feature trivalent zinc white/blue white zinc surface treatment with a minimum 3 μm coating thickness. Salt-spray resistance is specified at 24 hours for white rust and 48 hours for red rust, providing a defined corrosion-resistance level for general fastening environments.

Application Scenarios

Sheet Metal Assembly
Metal Panels
Electrical Enclosures
HVAC Equipment
Metal Framing
Construction Projects
Industrial Equipment
General Fabrication
Equipment Manufacturing
Wholesale Distribution

OEM / ODM Services

As a direct screw manufacturer, we provide OEM and ODM production for bulk buyers with specific dimensional requirements. Available customization options include:

• Head Height
• Raw Material Wire Diameter
• 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 Round Washer Head Self-Tapping Screws?
The standard MOQ is 100,000 pcs per order.

Q2: Can you provide OEM or ODM production for bulk orders?
Yes. We support OEM and ODM customization for head height, raw material wire diameter, and washer thickness.

Q3: What is the standard lead time for bulk orders?
The standard production lead time is 45 days after order confirmation.

Q4: What packaging options are available for B2B orders?
We can provide carton, paper box, or plastic bag packaging according to the buyer's requirements.