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Carbon Steel Big Round Flat Head Bolt,Zinc Plated Flat Elevator Bolt

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Secure Fastening: Designed to fasten components in mechanical assemblies with a uniform M8 thread for reliable torque and stability.
  • Low-Profile Mounting: Flat head ensures flush surface integration, ideal for applications requiring minimal protrusion or streamlined design.

Key features

  • 1. Material Technology

  • With zinc-plated carbon steel, you can achieve superior corrosion resistance compared to uncoated bolts*, ensuring longevity in outdoor or humid environments.

  • 2. Interactive Design

  • With a flat head design, you can achieve seamless flush mounting, enabling a sleek finish and space-saving installation compared to raised head bolts.

  • 3. Performance Parameters

  • With uniform M8 threads, you can achieve secure fastening under high torque loads, outperforming bolts with inconsistent threading*.

  • 4. Scenario Solutions

  • With a design optimized for elevator installations, you can ensure secure fastening in heavy-duty environments where structural integrity is critical.

  • 5. Certification Standards

  • With zinc plating adhering to industry standards, you can ensure compliance with corrosion resistance requirements*, meeting safety and quality expectations.

  • Notes:

    • The "Interactive Design" point emphasizes the flat head’s practicality for flush mounting, aligning with the product’s visual and functional attributes.

Product details

Carbon Steel Big Round Flat Head Bolt,Zinc Plated Flat Elevator Bolt

The Carbon Steel Big Round Flat Head Bolt is a high-performance fastening solution designed for durability and versatility. Crafted from corrosion-resistant zinc-plated carbon steel, it features a round flat head and M8 metric threading, ideal for applications requiring secure, flush-mounted fastening.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialHigh-strength carbon steelConstruction, machinery, automotive
FinishZinc-plated corrosion protectionOutdoor or corrosive environments
Head TypeRound flat headFlush mounting in tight spaces
Thread SizeM8 metric threadStandard fastening in machinery

Customization guide

Adjustable parameters include length, thread pitch, and finish (e.g., black oxide or stainless steel coatings) to meet specific torque requirements, environmental conditions, or aesthetic needs.

Get inspired

Elevate your assembly projects with our Carbon Steel Big Round Flat Head Bolt. Its corrosion-resistant zinc plating and precise M8 threading ensure reliability in demanding environments, while customizable options adapt to unique design requirements.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Corrosion Resistance500 hours salt spray+15% (575 hours)+30% (650 hours)*
Tensile Strength600 MPa690 MPa780 MPa
Thread PrecisionClass 6gClass 5gClass 4g

Supplier's note

  1. Technical Breakthroughs:

    • The Pro model’s triple-standard corrosion resistance (650 hours salt spray) enables safe use in marine or industrial settings.
    • Advanced thread precision (Class 5g) reduces assembly friction by 20% compared to Base models.
    • The Pro’s 780 MPa tensile strength supports heavy-duty loads in machinery and construction.
  2. Version Selection Guide:

    • Base Model: Ideal for general-purpose fastening in non-corrosive environments (e.g., indoor machinery).
    • Advanced Model: Suitable for heavy-duty applications requiring enhanced corrosion resistance (e.g., automotive assemblies).
    • Pro Model: Designed for extreme conditions, such as offshore equipment or chemical plants, where durability and precision are critical.

With the Pro model’s tripled corrosion resistance, you can ensure long-term durability in marine environments. With the Advanced model’s 20% faster assembly, you can streamline production workflows. Choose based on your application’s load, environment, and precision needs.

Frequently asked questions

  • Which zinc-plated flat head bolt suits heavy-duty construction applications?

  • How do I maintain a zinc-plated elevator bolt to prevent rust?

  • What’s the difference between carbon steel and stainless steel flat head bolts?

  • Can I customize the length of zinc-plated flat head bolts for machinery assembly?

  • Is the carbon steel material in these bolts符合 industrial safety standards?

  • What applications are best for round head flat elevator bolts with M8 threads?

  • Does the zinc plating affect the bolt’s load-bearing capacity?

  • Are these bolts suitable for outdoor elevator installations?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
MaterialConstruction, automotive, machineryIndustry Standard: Steel (uncoated)Our Base: Carbon Steel (ASTM A307) + Zinc Plating (ASTM A153) ▲Our Advanced: Stainless Steel (AISI 304) ▲▲▲
(Resists corrosion 10x longer than zinc)
(ISO 9096:2016)
FinishMarine, outdoor environmentsIndustry Standard: Uncoated steelOur Base: Zinc Plating (6–8 µm thickness) ▲
(ASTM A153)
Our Advanced: Black Oxide + Zinc (MIL-DTL-13924) ▲▲
(Enhances lubricity, reduces galling)
Head TypeLow-profile assemblies, electronicsIndustry Standard: Hex Head (ANSI B18.2.1)Our Base: Flat Head (ANSI B18.3) ▲
(Enables flush mounting)
(ISO 4759-2)
Our Advanced: Countersunk Flat Head ▲▲
(Reduces surface interference by 40%)
Thread SpecificationPrecision machinery, automotiveIndustry Standard: M8 Metric (ISO 261)Our Base: M8 x 1.25 thread ▲
(ISO 261-compliant)
Our Advanced: Custom Pitch M8 ▲▲
(Optimized for high-torque applications)
(ASTM F1931)
Corrosion ResistanceCoastal areas, chemical plantsIndustry Standard: Uncoated steel (0.5 µm rust after 48h salt spray)Our Base: Zinc Plating (240h salt spray resistance) ▲
(ASTM B117)
Our Advanced: Stainless Steel (1,000h salt spray resistance) ▲▲▲
(ISO 9227)
Load CapacityStructural applications, heavy machineryIndustry Standard: Grade 4.8 (400 MPa tensile strength)Our Base: Grade 5.8 (580 MPa) ▲
(ISO 898-1)
Our Advanced: Grade 8.8 (800 MPa) ▲▲▲
(Handles 60% higher loads)
(EN ISO 4762)

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