self tapping self drilling screws

self tapping self drilling screws

Our Grade 8.8 Galvanized Zinc Pan Head Screws are a high-performance fastening solution engineered for applications demanding superior strength, self-threading capability, and reliable corrosion resistance. These thread-forming (or “rolling tapping”) screws are designed to be driven into pre-drilled holes in metal, where they form their own strong, precise mating threads by displacing material rather than cutting it. This process creates an extremely secure, vibration-resistant joint. Combined with a high-strength Grade 8.8 rating and a protective zinc coating, these screws are an ideal choice for demanding industrial, automotive, and machinery assembly applications.

Product Details

This fastener is distinguished by several key engineering features. The screw is manufactured from high-strength carbon steel to meet the Grade 8.8 property class, giving it a high tensile strength suitable for load-bearing connections. The “rolling tapping” or thread-forming design is a critical feature; unlike thread-cutting screws that create metal chips (swarf), these screws cold-form the threads into the material. This creates a zero-clearance, work-hardened fit that is exceptionally resistant to loosening from vibration and provides higher pull-out strength.

The screw features a versatile pan head, which offers a low profile and a large bearing surface for good clamping force. It is driven by a standard Phillips cross recess for easy installation with common tools. A durable galvanized zinc coating provides excellent protection against corrosion. While the primary product is the Grade 8.8 carbon steel version, we also offer these screws in stainless steel and with a wide variety of head styles to meet any project requirement.

Product Parameters

The following table details the technical specifications for our Thread-Forming Screws. We are proud to offer extensive customization and no minimum order quantity.

General Specifications:

ParameterDescription
Product NameGrade 8.8 Galvanized Zinc Cross Recessed Phillips Pan Head Rolling Tapping Screw
Model NumberDIN (conforms to DIN standards)
Material OptionsHigh-Strength Carbon Steel (Grade 8.8), Stainless Steel
Finish / Surface TreatmentGalvanized (Zinc), Plain, Polishing (for Stainless Steel)
Head Style OptionsPan, Truss, Flat (Countersunk), Oval, Round, Binding
Drive TypePhillips Cross Recess
Measurement SystemMetric
StandardDIN
Length3mm – 100mm
Minimum Order QuantityNo Minimum Order Quantity
Sample PolicySamples are available
CertificateISO 9001:2015
PackingCarton and pallet, customizable.

Product Features

Our screws are manufactured to deliver superior performance and flexibility, offering several key advantages:

  • High-Strength Performance: Manufactured to Grade 8.8 specifications, providing the high tensile strength required for demanding and structural applications.
  • Superior Fastening Integrity: The thread-forming design creates a tight, vibration-proof connection with greater holding power than conventional tapping screws.
  • Clean, Chipless Assembly: By displacing material instead of cutting it, these screws eliminate the risk of metal swarf contaminating sensitive assemblies like electronics or hydraulic systems.
  • Unmatched Flexibility (No MOQ): With no minimum order quantity, we can support everything from prototyping and small repairs to full-scale production runs.
  • Extensive Customization: A wide variety of head styles, materials (including stainless steel), and finishes are available to create the perfect fastener for your needs.
  • Certified Quality: Our manufacturing process is certified to ISO 9001:2015 standards, ensuring consistent quality and reliability.

Product Applications

The unique combination of strength and thread-forming capability makes these screws ideal for:

  • Automotive Assembly: Fastening components to metal frames and chassis where vibration resistance is critical.
  • Sheet Metal Fabrication: Providing strong, reliable threads in sheet metal panels and enclosures.
  • Heavy Machinery and Equipment: Assembling structural components, guards, and mounting brackets.
  • Industrial Racking and Shelving: Creating strong, durable connections in metal framework.
  • Appliance Manufacturing: Used in the assembly of major appliances where a robust and lasting connection is needed.