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  • M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut
  • M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut
  • M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut
  • M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut
  • M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut
  • M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut
M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut

M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut

  • >= 1000 Pieces
    $0.09

Customization:

Customized logo（Min.Order: 1000 pieces）
Customized packaging（Min.Order: 1000 pieces）
Graphic customization（Min.Order: 1000 pieces）
View product details

M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Multi-Thread Compatibility: Designed to fit metric thread sizes M3, M4, M5, M6, and M8, enabling secure fastening across diverse hardware applications.
  • Adjustment Convenience: Star-shaped lobe design provides enhanced grip and torque control, ideal for manual tightening or loosening in mechanical assemblies.

Key features

  • 1. Corrosion-Resistant Materials for Durable Performance

    • With stainless steel and brass construction, withstand harsh environments like industrial machinery or outdoor equipment, outperforming purely plastic nuts in durability*.

  • 2. Ergonomic Plastic Handle for Tool-Free Adjustment

    • With a lightweight plastic hand knob, easily adjust nuts without tools, offering convenience compared to traditional nuts requiring wrenches or spanners*.

  • 3. Versatile Thread Compatibility for Broad Applications

    • With M3 to M6 thread sizes, adapt to diverse hardware needs—from small electronics to heavy machinery—expanding usability beyond single-size alternatives*.

  • 4. Metric System Compliance for Global Use

    • Designed with metric measurements, ensure seamless integration into international projects, avoiding compatibility issues faced by imperial-only systems*.

  • 5. Enhanced Durability Through Surface Treatments

    • With polished or anodized finishes, reduce wear and corrosion, extending lifespan compared to uncoated nuts in abrasive or humid conditions*.

Product details

M3 M4 M5 M6 6 Lobe Plastic Hand Knob Thumb Nut Star Knob Nut

The M3-M6 6 Lobe Plastic Hand Knob Thumb Nut is a versatile fastening solution designed for precision applications. Available in metric thread sizes (M3-M8) and materials like stainless steel, carbon steel, brass, and plastic, these nuts offer customizable finishes (anodized/polished) to suit diverse industrial and mechanical needs.

Technical specifications

FeatureSpecificationBenefit
MaterialStainless Steel, Carbon Steel, Brass, PlasticCorrosion resistance (stainless), cost efficiency (plastic)
Thread SizeM3, M4, M5, M6, M8Universal compatibility with standard bolts
FinishAnodized, PolishedEnhanced durability (anodized), sleek appearance (polished)
MeasurementMetric SystemGlobal standardization for ease of use
Surface TreatmentPolished/AnodizedReduced friction (polished), color stability (anodized)

Customization guide

Adjust material selection (e.g., plastic for lightweight applications, stainless steel for corrosive environments) and thread size (M3-M8) to meet specific mechanical or environmental requirements.

Get inspired

From automotive assemblies to electronics enclosures, these thumb nuts provide secure fastening solutions. Choose plastic for cost-effective lightweight designs or stainless steel for long-term durability in harsh conditions.

Choose your model

ParameterBase Model (Plastic)Advanced Model (Steel)Pro Model (Stainless Steel)
Material DurabilityStandard+20% Strength+40% Corrosion Resistance*
Temperature Range-10°C to 60°C-20°C to 80°C-30°C to 120°C
Load Capacity50 N75 N100 N

Supplier's note

  1. Technical Breakthroughs:

    • Pro Model’s Stainless Steel: Triple the corrosion resistance of industry benchmarks, enabling use in marine or chemical environments.
    • Advanced Steel’s Enhanced Load Capacity: 20% higher than standard plastic nuts, ideal for machinery with moderate stress.
    • Anodized Finish: Provides color-coded identification and UV resistance for organized assembly lines.

  2. Optimal Version Selection:

    • Base Model: Best for low-cost, non-critical applications (e.g., consumer electronics).
    • Advanced Model: Suitable for industrial machinery requiring durability without premium materials.
    • Pro Model: Recommended for harsh environments (e.g., chemical plants, outdoor equipment) where longevity is critical.

*Compared to uncoated steel.

Frequently asked questions

  • Which M3/M4/M5/M6 lobe knob is best for light machinery applications?

  • How to clean and maintain anodized plastic thumb nuts?

  • Plastic vs Stainless Steel Lobe Knobs: Which is better for outdoor equipment?

  • Can I order custom thread sizes for M6 star knobs?

  • Are M3-M6 lobe nuts ISO-certified?

  • Which knob size (M3-M6) handles high torque best?

  • Plastic vs Brass Thumb Nuts: Which resists chemicals better?

  • How to prevent oxidation on polished steel star nuts?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material TypeIndustrial machinery, automotive
Industry: Carbon Steel (ASTM A36) or Plastic (Polyamide PA6)
Base: Stainless Steel (AISI 304 ▲)
Advanced: Brass (C26000 ▲▲)		▲ Base: 50% higher corrosion resistance than carbon steel (ASTM G48)
▲▲ Advanced: Enhanced conductivity (12.9% IACS)		Base: 20% cost increase vs. carbon steel
Advanced: 40% cost increase vs. base
Surface FinishHigh-wear environments, aesthetic needs
Industry: Unfinished (Raw metal)
Base: Polished (ISO 8508 ▲)
Advanced: Anodized (Type II, MIL-A-8625 ▲▲)		▲ Base: 30% smoother surface (Ra 0.8 µm)
▲▲ Advanced: 1000h salt spray resistance (ASTM B117)		Base: +15% production cost
Advanced: +30% cost for chemical treatment
Thread Size RangePrecision machinery, varied bolt needs
Industry: M3-M6 (Common sizes)
Base: M3-M8 (ISO 261 ▲)
Advanced: Custom threads (▲▲)		▲ Base: 33% wider size range
▲▲ Advanced: ±0.01mm tolerance (ISO 297)		Advanced: 2-4 week lead time for custom threads
Measurement SystemGlobal projects requiring metric/imperial
Industry: Metric (ISO 297)
Base: Metric
Advanced: Dual metric/imperial (▲)		▲ Advanced: Compatible with both systems (ISO 297 + ASME B1.1)Advanced: 10% higher tooling costs
Corrosion ResistanceMarine, chemical plants
Industry: 100h neutral salt spray (ASTM B117)
Base: 500h ▲
Advanced: 1000h ▲▲		▲ Base: 5x longer lifespan in corrosive environments
▲▲ Advanced: 10x lifespan		Base: 25% heavier than plastic
Advanced: 15% weight increase vs. base
Load CapacityHeavy machinery, structural applications
Industry: 1000N (ISO 6892)
Base: 1500N ▲
Advanced: 2000N ▲▲		▲ Base: 50% higher load capacity
▲▲ Advanced: 100% increase vs. industry standard		Advanced: 20% larger footprint, bulkier design

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