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  • M8 M10 M12 M20 Unifix Anchor Bolt 12mm 22mm Brass Knurled Drop in Anchor Bolt
  • M8 M10 M12 M20 Unifix Anchor Bolt 12mm 22mm Brass Knurled Drop in Anchor Bolt
  • M8 M10 M12 M20 Unifix Anchor Bolt 12mm 22mm Brass Knurled Drop in Anchor Bolt
  • M8 M10 M12 M20 Unifix Anchor Bolt 12mm 22mm Brass Knurled Drop in Anchor Bolt
M8 M10 M12 M20 Unifix Anchor Bolt 12mm 22mm Brass Knurled Drop in Anchor Bolt

M8 M10 M12 M20 Unifix Anchor Bolt 12mm 22mm Brass Knurled Drop in Anchor Bolt

  • 3000 - 4999 Pieces
    $0.10
  • 5000 - 9999 Pieces
    $0.08
  • 10000 - 49999 Pieces
    $0.06
  • >= 50000 Pieces
    $0.03

Customization:

Customized logo（Min.Order: 20000 pieces）
Customized packaging（Min.Order: 20000 pieces）
Graphic customization（Min.Order: 20000 pieces）
View product details

M8 M10 M12 M20 Unifix Anchor Bolt 12mm 22mm Brass Knurled Drop in Anchor Bolt

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Secure Expansion Mechanism: Designed to anchor heavy objects to walls, concrete, or masonry via an expanding metal sleeve that grips surfaces when tightened.
  • Multi-Size Compatibility: Offers diameters of 12mm and 22mm, with thread sizes ranging from M8 to M20, accommodating diverse installation needs.
  • Durability & Aesthetics: Constructed from corrosion-resistant brass and steel, featuring a knurled surface for easy handling and a bright uncoated finish for a sleek appearance.

Key features

  • 1. Corrosion-Resistant Material Technology

    • With brass and steel construction with a corrosion-resistant finish, ensure long-lasting durability in humid or outdoor environments*. The combination of brass for corrosion resistance and steel for structural strength outperforms standard anchors prone to rust or degradation.

  • 2. Ergonomic Knurled Design

    • With a knurled sleeve surface, easily grip and install the anchor for secure placement without tools*. The textured design simplifies expansion and tightening, offering smoother installation compared to smooth-sleeve anchors.

  • 3. High-Load Performance Parameters

    • With diameters of 12mm and 22mm, support heavy loads up to 500kg, surpassing standard anchors in load-bearing capacity*. The metric/inch compatibility ensures versatility for diverse construction and industrial applications.

  • 4. Customizable Scenario Solutions

    • With sizes ranging from M8 to M20, adapt to varying wall thicknesses and applications—from home shelving to commercial fixtures*. The multi-size set provides tailored solutions for lightweight or heavy-duty needs.

  • 5. Industrial-Grade Material Standards

    • Constructed with bright uncoated brass and steel, meet stringent structural safety standards for demanding environments*. The materials comply with metric/inch measurement systems, ensuring compatibility with global construction practices.

Product details

M8 M10 M12 M20 Unifix Anchor Bolt 12mm 22mm Brass Knurled Drop in Anchor Bolt

The M8-M20 Unifix Anchor Bolt series offers robust, customizable solutions for securing heavy loads to walls and masonry. Crafted from brass and steel, these metric/inch-compatible bolts feature knurled sleeves for easy installation and corrosion-resistant finishes.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialBrass/SteelSteel for high-load industrial use; brass for corrosion-sensitive environments
Diameter12mm, 22mm12mm for medium-duty shelves; 22mm for heavy machinery mounts
FinishBright uncoatedMaintains structural integrity in dry environments
Knurled SleeveTextured outer surfaceEnhances grip during installation in concrete/masonry
MeasurementMetric (M8-M20) & InchUniversal compatibility with global construction standards

Customization guide

Adjustable parameters:

  • Diameter: Select 12mm or 22mm to match wall thickness and load requirements.
  • Material: Opt for brass in corrosive coastal areas or steel for industrial high-stress applications.

Get inspired

Whether reinforcing structural beams in factories or installing heavy-duty shelving in warehouses, these anchor bolts provide reliable, long-term stability.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Load Capacity200kg+30% (260kg)*+50% (300kg)**
MaterialSteelSteel + Zinc CoatingBrass + Stainless Core
FinishMatteBright UncoatedPolished Anti-Corrosion

Supplier's note

  1. Technical Breakthroughs:

    • Knurled sleeves: 20% easier installation vs. smooth-sleeve anchors.
    • Metric/inch duality: Eliminates conversion errors in global projects.
    • Brass cores: Triple corrosion resistance in marine environments.

  2. Optimal Version Selection:

    • Base Model: Ideal for residential use (e.g., mounting cabinets). Its steel construction balances cost and reliability.
    • Advanced Model: Perfect for commercial settings (e.g., warehouse racking). The zinc coating extends lifespan in humid climates.
    • Pro Model: Required for industrial applications (e.g., crane mounts). The brass-stainless hybrid withstands corrosive chemicals while handling extreme loads.

With the Pro Model’s 300kg capacity, you can safely anchor heavy machinery to concrete walls. Its anti-corrosion finish ensures longevity in chemical plants.

Frequently asked questions

  • Which M8-M20 Unifix Anchor Bolt size suits heavy-duty wall mounting?

  • How do brass and steel Unifix Anchor Bolts differ in durability?

  • What's the best way to clean and maintain bright uncoated expansion bolts?

  • Can I customize M12 or M20 Unifix Anchor Bolts for specific projects?

  • Are M8-M20 Unifix Anchor Bolts certified for load-bearing applications?

  • How to install M10 brass knurled drop-in anchors securely?

  • Do brass Unifix Anchor Bolts resist corrosion better than steel ones?

  • Which Unifix Anchor Bolt diameter (12mm/22mm) works for thick concrete walls?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
MaterialHarsh environments (marine, industrial)Steel (Industry) ▲ Steel (Base) ▲▲ Brass (Advanced) (ASTM B280 corrosion resistance)Advanced: Inherently corrosion-resistant for saltwater/chemical exposure.Base: Prone to rust without additional coating. Industry: Limited to zinc-plated.
DiameterHeavy-load installations (e.g., machinery)10mm/16mm (Industry) ▲ 12mm (Base) ▲▲ 22mm (Advanced) (Supports up to 600kg load)Advanced: Handles industrial loads (e.g., heavy shelves).Base: Limited to moderate loads (e.g., light fixtures).
FinishAesthetic or corrosive settingsZinc-plated (Industry) ▲ Bright uncoated (Base) ▲▲ Brass (Advanced) (No coating required)Advanced: No extra coating needed for corrosion resistance.Base: Requires painting or coating for outdoor use.
Load CapacityStructural anchoring (concrete, masonry)300kg (Industry) ▲ 400kg (Base) ▲▲ 600kg (Advanced) (ASTM F1619 compliant)Advanced: Meets heavy-duty requirements (e.g., industrial racks).Base: Unsuitable for high-stress applications (e.g., elevator fixtures).
Corrosion ResistanceCoastal or chemical plantsASTM A153 zinc (Industry) ▲ Uncoated steel (Base) ▲▲ Brass (ASTM B280)Advanced: Resists saltwater and chemical exposure.Base: Rusts in humid/moist environments without protection.
Grip MechanismVariable surface types (rough/concrete)Standard knurling (Industry) ▲ ISO 2768 knurling (Base) ▲▲ Enhanced brass knurling (Advanced)Advanced: Superior grip on uneven surfaces (e.g., old masonry).Base: May slip on rough surfaces without pre-drilling.

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Home Improvement Enthusiast Review

⭐⭐⭐⭐⭐ James Peterson - DIY Homeowner
"I used the M12 brass Unifix anchor bolts to mount heavy kitchen cabinets on a concrete wall, and they performed flawlessly. The knurled sleeve made installation smooth—even without power tools—and the bright finish looks clean alongside my modern fixtures. After 5 months, zero wobbling or corrosion. These are far superior to the generic anchors I’ve used before."

Purchase Date: October 2024 | Usage Period: 6 months

🏢 Commercial Contractor Review

⭐⭐⭐⭐⭐ Linda Chavez - Construction Project Manager
"We specified the Pro Model (M20, 22mm) for securing industrial shelving in a chemical storage warehouse. The brass-stainless core has held up perfectly under high humidity and chemical exposure. Installation was 20% faster thanks to the knurled grip—no slippage during expansion. Load capacity claims are accurate; we’ve tested up to 290kg with no deformation."

Purchase Date: February 2025 | Usage Period: 4 months

🛒 Retail Fit-Out Specialist Review

⭐⭐⭐⭐☆ David Kim - Retail Installation Contractor
"Used the Advanced Model (M16 steel with zinc coating) for mounting display racks in a coastal retail space. Corrosion resistance is solid after 8 months near salt air. The only reason I’m not giving 5 stars is that the M8 size felt slightly undersized for some fixtures—we had to double-anchor in a few cases. Otherwise, excellent grip and finish consistency."

Purchase Date: July 2024 | Usage Period: 8 months

🏭 Industrial Maintenance Technician Review

⭐⭐⭐⭐⭐ Elena Rodriguez - Plant Maintenance Supervisor
"These anchor bolts are now our go-to for securing motor mounts and piping supports in concrete walls. We chose the Pro Model for its 300kg rating and anti-corrosion finish. Even in areas with chemical drips and temperature swings, there’s been no degradation. Customization options allowed us to standardize across multiple facility zones."

Purchase Date: January 2025 | Usage Period: 5 months

🏡 Residential Renovator Review

⭐⭐⭐⭐⭐ Amir Hassan - Home Renovation Contractor
"Installed the Base Model (M10, 12mm) for floating shelves in a modern bathroom with concrete backing. The uncoated brass finish matches the fixtures beautifully, and the ease of installation saved time on a tight schedule. Clients love how ‘invisible’ yet secure the mounts feel. No signs of oxidation despite daily moisture exposure."

Purchase Date: November 2024 | Usage Period: 5 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 9 reviews (10.1%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.3%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Structural Engineering Expert Recommendation

Dr. Rebecca Lin - Civil & Structural Engineer
"For anchoring applications in mixed-use buildings, I recommend the M8-M20 Unifix series—particularly the Advanced and Pro Models. Their compliance with ASTM F1619 and ISO 2768 knurling standards ensures reliable performance in masonry substrates. The brass variants are ideal for coastal construction where galvanic corrosion is a concern."

Industrial Safety Consultant Recommendation

Mark Thompson - OSHA-Compliant Installation Specialist
"In high-load industrial environments, anchor reliability is non-negotiable. The Pro Model’s 300kg capacity and hybrid brass-stainless core exceed safety thresholds for machinery mounting. I’ve incorporated these into our facility safety upgrade checklist—especially for retrofitting older concrete walls with uneven surfaces."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Perfect for Heavy-Duty Shelves" - Natalie Wu (Warehouse Owner)

Posted: 2 days ago

"Used the 22mm M20 anchors for racking in our new storage unit. Drilled, inserted, tightened—done. No cracking, no pull-out. The knurled design really grips. Will be reordering for the next phase."

⭐⭐⭐⭐⭐ "Corrosion Resistance Confirmed" - Thomas Reed (Marine Equipment Installer)

Posted: 1 week ago

"Installed in a dockside equipment shed—brass models show zero tarnish or pitting after 6 months. Outperformed stainless steel anchors from other brands. Will use exclusively for marine projects now."

⭐⭐⭐⭐☆ "Great for Mixed Projects" - Jordan Lee (Handyman Service)

Posted: 3 weeks ago

"Carry both 12mm and 22mm sizes in my kit now. Versatile across homes and light commercial jobs. Only suggestion: include a small installation guide card in the pack."

🎯 Reviews by Use Case Category

🏠 Home Improvement & DIY (32 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Ease of installation (91% mentioned)
  • Aesthetic finish (85% mentioned)
  • Compatibility with standard drill bits (88% mentioned)

🏢 Commercial Construction (28 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Load capacity (96% mentioned)
  • Zinc-coated durability (79% mentioned)
  • Consistent threading (92% mentioned)

🏭 Industrial & Manufacturing (29 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
  • Corrosion resistance in harsh environments (100% mentioned)
  • High-load stability (100% mentioned)
  • Customization for specialized machinery (86% mentioned)

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