5.5 * 70mm Full Thread Self Drilling Screws with EPDM Washer

• Customization: Available
• Material: Carbon Steel
• Shape of Head: Hexagon
• Model NO.: 10# 5.5*70mm
• Surface Finishing: Zinc Plated
• Certification: ISO
• Customized: Non-Customized
• Hscode: 7318140000
• Washer: EPDM
• Tail: Drilling Type
• Application: Roofing Fixing
• Transport Package: Carton Box
• Specification: 5.5*70mm full thread
• Trademark: YB
• Origin: Zhejiang
• HS Code: 7318140000
• Production Capacity: 1000000

Product Description

Specification

Name	Self Drilling screws
Standard	ISO 15480
Coating Type	Zinc+Organic Coating
SPEC	10#,12#,ST5.5,ST6.3
Material	Carbon steel/SUS410/SUS410+304

Product Description

EPDM Self Drilling Screws Application

EPDM Self-Drilling Screws in Roofing Applications
EPDM (Ethylene Propylene Diene Monomer) self-drilling screws are specifically designed for roofing systems, combining the efficiency of self-drilling technology with the superior sealing properties of EPDM washers.

Key Applications:

Metal Roofing Installation: Fastening metal panels to purlins or substructures.
Waterproofing Layers: Securing EPDM membranes or synthetic roofing sheets.
Solar Panel Mounting: Attaching solar brackets to metal roofs without compromising weather resistance.
Ventilation and Flashing: Sealing around roof vents, skylights, or edge details.

 

EPDM Self Drilling Screws Advantage

Advantages:
Weather Resistance: EPDM washers withstand UV exposure, ozone, and extreme temperatures (-40°C to +130°C).
Watertight Seal: Compresses evenly to prevent leaks, even under thermal expansion/contraction.
Corrosion Protection: Paired with galvanized or stainless steel screws, ideal for humid/coastal environments.
Vibration Resistance: Maintains grip in high-wind areas.
Time Efficiency: Self-drilling tip eliminates pre-drilling, reducing labor costs.
Example Use Case: Fixing standing seam metal roofs in climates with heavy rain/snow, where long-term sealing is critical.

Company Profile

NINGBO YONGBIAO FASTENER.CO.,LTD

NINGBO YONG BIAO FASTENER CO.,LTD  establishment in 2012, the company  hasdeveloped step by step into a fastener production enterprise that integrates  production and sales with thebusiness philosophy of "producing high-quality  productsprofessionally and focusing on cost reduction". The company is located in  Lufeng Industrial Zone,Yinzhou District, Ningbo City, 35 kilometers away from Ningbo  Port, with very fast exports. The factory covers an area of over 2000 square meters,  with complete production equipment and sophisticated testing equipment. We have  over 50 production equipment and an annual production capacity of over 5000 tons.  We mainly produce fastener products such as carbon steel and stainless steel.The  company's products are mainly used in fieldssuch as automobiles, machinery,  electronic equipment,sheet metal, security, and new energy.

Certifications

Packaging & Shipping

Carton Packaging

Outer Cartonbox Packaging

Pallet Packaging

Bolts are packed in neutral packaging boxes, with standard quantities arranged in small cartons. The exact number of units per carton will be confirmed with the customer to align with their specific requirements. Customized packaging configurations are available upon request.

The small cartons are then consolidated into larger master cartons for secure transportation and storage. The quantity per master carton can be customized based on client specifications or aligned with standard logistical requirements.

The palletized units are securely wrapped with waterproof film and reinforced with packaging straps. Customer-specific shipping marks or labels are affixed to each pallet, ensuring clear identification and compliance with logistics requirements. This final packaging stage guarantees weather-resistant protection and stability during transportation.

FAQ

Q1: Why choose us?
A: we are manufacture and can offer you more competitive prices.
Q2: How long is your delivery time?
A: 20-25days
Q3: What is your terms of payment?
A:30-50% in advance ,50-70% before delivery
Q4:What's your price terms?
A:EXW/FOB/CIF/DDP