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  • Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer
  • Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer
  • Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer
  • Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer
  • Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer
  • Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer
Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer

Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer

  • 100000 - 199999 Pieces
    $0.04
  • 200000 - 499999 Pieces
    $0.03
  • >= 500000 Pieces
    $0.02

Customization:

Customized logo（Min.Order: 50000 pieces）
Customized packaging（Min.Order: 50000 pieces）
View product details

Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Self-Drilling Efficiency: Designed to eliminate pre-drilling by creating pilot holes automatically, ideal for securing roofing materials like metal, composite, or thin panels.
  • Hex Head Versatility: Features a hexagonal head for compatibility with standard hand or power tools, ensuring easy installation and torque application.

Key features

  • 1. Corrosion-Resistant Material Technology

    • With a galvanized steel body and zinc-plated finish, you can ensure long-lasting durability in harsh outdoor environments, such as roofing or coastal applications.

  • 2. Color-Coded Interactive Design

    • With color-coded hexagonal heads and washers, you can easily identify specifications (e.g., thread size, length) for precise applications, streamlining assembly workflows.

  • 3. Self-Drilling Efficiency

    • With self-drilling capability, you can penetrate materials like metal, wood, or sheeting without pre-drilling, saving up to 30% installation time.

  • 4. Versatile Performance Parameters

    • With thread sizes (M4.2–M8) and lengths (25mm–120mm), you can adapt to diverse material thicknesses and applications, from lightweight roofing panels to heavy-duty structural fastening.

  • 5. Certified for Industrial Standards

    • With ANSI and DIN certifications, you can meet global quality and safety requirements for commercial and residential construction projects.

Product details

Class 4 Galvanized Hex Head Self Drilling Screw Roofing Screws with Optional Neo Washer

Class 4 Galvanized Hex Head Self Drilling Screws are engineered for durable, efficient fastening in roofing and construction applications. Featuring self-drilling capability, galvanized corrosion resistance, and customizable color-coding, these screws streamline installation while ensuring structural integrity.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialSteel/Carbon SteelHeavy-duty construction, roofing panels
FinishGalvanized, Zinc PlatedMarine environments, outdoor structures
Head TypeHex Washer Head, Hex HeadSecure fastening with hand/power tools
Thread SizeM4.2, M4.8, M5.5, M6, M6.3, M8Customized for material thickness
Length Options25mm–120mm (metric/inch)Varying material depths (e.g., roofing sheets)
StandardsANSI, DINCompliance for global construction codes

Customization guide

Adjustable parameters include head/washer color coding (to match thread sizes or load ratings) and length/thread combinations to suit specific material thicknesses. For example, pairing a 50mm M6 screw with a red washer indicates suitability for lightweight metal roofing.

Get inspired

With self-drilling capability, you can eliminate pre-drilling steps, reducing installation time by up to 20%. The galvanized finish ensures longevity in corrosive environments, while hex heads enable precise torque control for professional-grade assembly.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Thread StrengthStandard+15%+30%*
Corrosion ResistanceANSI Grade 3Enhanced CoatingTriple-Dipped Zinc
Application RangeLight roofingIndustrial panelsHarsh marine/wind zones

Supplier's note

  1. Technical Breakthroughs:

    • Self-Drilling Design: Eliminates pre-drilling, cutting installation time by 20%.
    • Galvanized Finish: ANSI Grade 3 corrosion resistance, ideal for coastal regions.
    • Color-Coded System: Reduces assembly errors by 40% through visual differentiation.

  2. Version Selection Guide:

    • Base Model: Contractors installing standard roofing sheets (e.g., 25–50mm thickness).
    • Advanced Model: Industrial applications requiring M6+ threads for heavy-duty panels.
    • Pro Model: Marine or chemical plants where Pro’s triple-dipped zinc coating outperforms industry benchmarks by 150%. Pair its M8 threads with 120mm length for securing thick steel beams in offshore platforms.

*Pro Model’s 30% higher thread strength meets DIN 933 Class 8.8 standards.

Frequently asked questions

  • Which Class 4 Galvanized Hex Head Self Drilling Screw size suits roofing projects with varying material thickness?

  • How do I maintain Class 4 Galvanized Hex Head Self Drilling Screws to prevent corrosion?

  • Carbon Steel vs Stainless Steel: Which is better for outdoor roofing applications?

  • Can I customize Neo Washer colors for Class 4 Hex Head Self Drilling Screws?

  • Are Class 4 Galvanized Hex Head Screws ANSI/DIN compliant for international projects?

  • What are the best uses for Class 4 Galvanized Hex Head Self Drilling Screws in roofing?

  • How do I choose the right thread size for metal vs wood with these screws?

  • How do Class 4 Self Drilling Screws save time during roofing installations?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material/FinishCorrosive outdoor environmentsIndustry Standard: Uncoated steel (ASTM A307)
Our Base: Class 4 galvanized coating (ASTM A153)
Our Advanced: Galvanized + Neo Washer (ASTM F446)		▲ Base: 500+ hours salt spray resistance (vs 100 hours for standard)
▲ Advanced: Enhanced corrosion resistance with washer		Base: Slightly heavier than uncoated steel
Head TypeHeavy-duty assemblyIndustry Standard: Flat head
Our Base/Advanced: Hex washer head (ISO 4758)		▲ Hex design allows 30% faster torque application
Washer reduces material indentation		Requires hex driver (not phillips)
Length RangeRoofing on thick/curved surfacesBase: 25–100mm (metric/inch)
Advanced: 25–120mm (metric/inch)		▲ Advanced: Covers 15% thicker materials (e.g., corrugated metal roofing)Base lacks support for ultra-thick substrates
Thread Size CompatibilityDiverse material thicknessesBase: M4.2–M6.3 (ANSI)
Advanced: M4.2–M8 (ANSI + DIN)		▲ Advanced: Fits 40% more material types (e.g., steel vs aluminum)Narrower thread range limits Base’s applications
Standards ComplianceInternational projectsBase: ANSI-certified
Advanced: ANSI + DIN-compliant (EN ISO 2320)		▲ Advanced: Valid for EU/Asia markets (vs Base’s US focus)Advanced may require additional certifications in niche regions
Washer ConfigurationLoad-bearing jointsBase: Standard washer
Advanced: Neo Washer (ASTM F446)		▲ Neo Washer reduces shear stress by 25% in dynamic loadsAdvanced adds 10% to material cost

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