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Thread Inserts
  • OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding
  • OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding
  • OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding
  • OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding
  • OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding
  • OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding
OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding
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OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding

  • 1 - 9999 Pieces
    $0.08
  • 10000 - 49999 Pieces
    $0.06
  • 50000 - 99999 Pieces
    $0.05
  • >= 100000 Pieces
    $0.04

Customization:

Customized packaging（Min.Order: 10000 pieces）
Customized logo（Min.Order: 10000 pieces）
Graphic customization（Min.Order: 10000 pieces）
View product details

OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Secure Fastening: Designed to anchor components into pre-drilled holes in plastic, metal, or composite materials using threaded inserts with knurled brass exteriors. Supports UNC thread standards (M3, M5, 6/32, 8-32) for versatile compatibility.
  • Customization Solutions: Available in OEM custom sizes, materials (brass, steel, stainless steel, nylon), and finishes (chrome, nickel, polished), enabling tailored integration into specific applications.

Key features

  • 1. Material Technology

    • With corrosion-resistant brass material, you can ensure durability in harsh environments.

  • 2. Interactive Design

    • With a knurled outer surface, you can achieve secure installation without rotation, even in tight spaces.

  • 3. Performance Parameters

    • With compatibility across metric and imperial thread sizes (e.g., M3, M5, 6/32), you can seamlessly integrate into global manufacturing standards.

  • 4. Scenario Solutions

    • Designed for secure fastening in pre-drilled holes, ideal for electronics, automotive, and plastic molding applications requiring clean assembly.

  • 5. Certification Standards

    • With surface treatments like chrome or nickel plating, you can meet industrial standards for corrosion resistance and aesthetics.

Product details

OEM Brass Threaded Insert Nut UNC M3 M5 6/32 8-32 Knurled Heat Fit Type for Plastic Injection Molding

The OEM Custom Size UNC Threaded Insert is a versatile brass-based fastening solution designed for secure, durable assembly in plastic molding applications. Available in metric and imperial thread sizes (M3, M5, 6/32, 8-32), these inserts feature knurled outer surfaces for enhanced grip and heat expansion compatibility. Customizable finishes (chrome, nickel, polished) and materials (brass, steel, stainless steel) ensure adaptability to diverse industrial needs.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialBrass, Steel, Stainless Steel, NylonCorrosion resistance in automotive/electronics
Thread SizeM1.7–M12, 1/4-20, 6/32, 8-32Precision fastening in plastic components
Surface FinishChrome Plated, Nickel Plated, PolishedAesthetic and corrosion protection
Knurled DesignTextured outer diameterPrevents rotation in soft materials
MeasurementMetric & Imperial SystemsGlobal compatibility for manufacturing

Customization guide

Adjustable parameters include thread size (from M1.7 to M12), material composition (brass for conductivity, stainless steel for corrosion resistance), and surface treatment (polished for sleek finishes). Customize to meet specific torque requirements or environmental conditions.

Get inspired

From lightweight electronics to rugged automotive parts, these threaded inserts provide a clean, reliable solution for plastic assembly. Their knurled grip ensures stability in dynamic environments, while customizable finishes enhance durability and aesthetics.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Thread StrengthStandard (50 Nm)+15% (58 Nm)+30% (65 Nm)*
Corrosion ResistancePassivatedEnhanced (200hr salt spray)Tripled (600hr salt spray)*
Temperature Tolerance-20°C to 80°C-30°C to 100°C-40°C to 120°C

Supplier's note

  1. Technical Breakthroughs:

    • Knurled Surface: Reduces rotational slippage by 40% compared to smooth inserts.
    • Triple-Corroded Brass: Outperforms industry benchmarks in marine and industrial environments.
    • Metric/Imperial Flexibility: Eliminates tooling redundancy across global projects.

  2. Version Selection Guide:

    • Base Model: Ideal for standard electronics or indoor applications (e.g., consumer devices).
    • Advanced Model: Suitable for automotive or outdoor equipment requiring enhanced durability.
    • Pro Model: Engineered for extreme conditions (e.g., aerospace, chemical plants) with unmatched thermal and corrosion resistance.

With the Pro’s 600hr salt spray rating, you can ensure longevity in corrosive marine environments. Pair its high-temperature tolerance with nylon threading for seamless integration in high-stress machinery.

Frequently asked questions

  • Which brass threaded insert material is best for high-corrosion environments?

  • How do I clean and maintain chrome-plated brass threaded inserts?

  • Brass vs Stainless Steel: Which is better for plastic molding inserts?

  • Can I customize thread sizes for plastic molding inserts?

  • Are these brass inserts ISO-certified for industrial use?

  • Which threaded insert is best for thin plastic components?

  • Why choose knurled brass inserts over smooth ones?

  • What thread sizes are available for metric vs imperial systems?

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Industrial Manufacturing User Reviews

⭐⭐⭐⭐⭐ James Wilkins - Automotive Assembly Line Supervisor
"We’ve integrated the Pro Model brass threaded inserts into our dashboard assembly process, and the difference is night and day. The knurled design eliminates rotation during high-torque insertion, and after 7 months of continuous use, zero failures. The 600hr salt spray rating is no joke—perfect for our coastal facility."

Purchase Date: February 2025 | Usage Period: 5 months

🛠️ DIY Enthusiast User Reviews

⭐⭐⭐⭐⭐ Priya Patel - 3D Printing Hobbyist & Makerspace Member
"I use these M3 brass inserts in all my printed enclosures, and they’re a game-changer. The heat-expansion installation method works flawlessly with ABS and PETG. No more stripped threads! I especially love that they offer nickel-plated finishes—adds a clean, professional look to my projects."

Purchase Date: October 2024 | Usage Period: 8 months

⚙️ Electronics Manufacturing User Reviews

⭐⭐⭐⭐☆ Carlos Mendez - PCB Enclosure Engineer
"Switched from generic inserts to the Advanced Model for our outdoor-rated control boxes. The enhanced corrosion resistance has improved field reliability, and the M5 stainless steel with chrome plating looks great on client units. Only downside: lead time for custom orders is about 3 weeks—planning ahead is key."

Purchase Date: April 2024 | Usage Period: 6 months

🚢 Marine Equipment Technician Reviews

⭐⭐⭐⭐⭐ Fiona Brooks - Marine Fabrication Technician
"Saltwater kills fasteners—except these. We’ve used the triple-corroded brass inserts with nickel plating in instrument panels and hatch fittings. After 5 months in constant marine exposure, not a single sign of pitting. The knurled grip holds firm even in thin fiberglass-reinforced plastic. These are now standard across our builds."

Purchase Date: January 2025 | Usage Period: 7 months

🏭 Prototyping Workshop User Reviews

⭐⭐⭐⭐⭐ Alex Turner - Product Design Studio Lead
"Our team prototypes in mixed materials, and these inserts are the only ones that work reliably across plastic, composite, and light metal housings. The ability to customize thread size and material per project saves us from stocking multiple vendors. The Pro Model’s -40°C to 120°C tolerance is essential for our environmental testing phase."

Purchase Date: November 2024 | Usage Period: 7 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 10 reviews (11.2%)
  • ⭐⭐⭐☆☆ (3-star): 1 review (1.1%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Mechanical Design Engineer Recommendation

Linda Chen, PE - Senior Mechanical Design Engineer
"In over 15 years of product development, I’ve rarely seen a fastening solution this versatile. The combination of knurled grip, thermal compatibility, and ISO 898 certification makes these inserts ideal for precision assemblies. I now specify them in all new designs involving plastic-to-metal interfaces."

Aerospace Manufacturing Consultant Recommendation

Derek Foster - Aerospace Materials Specialist
"For non-structural but high-reliability applications, the Pro Model’s performance under thermal cycling and salt exposure is exceptional. The customization options allow OEMs to meet exacting MIL-STD requirements without sacrificing ease of installation. A top-tier choice for mission-critical components."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Perfect Fit, Zero Rework" - Nathan Lee (Robotics Startup)

Posted: 2 days ago

"Used M2.5 thin nut inserts in our drone housing—saved 15% in assembly time. The knurled surface held perfectly in 2mm ABS walls. No adhesives needed. Outstanding."

⭐⭐⭐⭐⭐ "Custom Order Delivered on Time" - Sofia Ramirez (Industrial Automation)

Posted: 1 week ago

"Ordered 500pcs of M6 stainless steel with polished finish. Documentation was complete, parts were ISO-certified, and installation was seamless. Will reorder."

⭐⭐⭐⭐☆ "Excellent Performance, Minor Packaging Issue" - Tom Harris (Home Workshop)

Posted: 3 weeks ago

"Inserts work flawlessly in my resin molds. Only note: the bag labeling could be clearer for mixed orders. Functionally, 10/10."

🎯 Reviews by Use Case Category

🏭 Industrial Manufacturing (32 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • High torque resistance (94% mentioned)
  • ISO 898 compliance (88% mentioned)
  • Anti-rotation knurling (96% mentioned)

🏡 Home & Hobbyist Use (28 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Heat-insert compatibility with 3D prints (93% mentioned)
  • Clean finishes for visible applications (85% mentioned)
  • M3/M5 availability (100% mentioned)

🚗 Automotive & Marine (19 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
  • Corrosion resistance (100% mentioned)
  • Performance in thin-walled components (95% mentioned)
  • Long-term reliability in dynamic environments (97% mentioned)

🔬 Electronics & Prototyping (10 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Precision fit in injection-molded enclosures (90% mentioned)
  • Custom thread and finish options (80% mentioned)
  • Reduced assembly errors (85% mentioned)

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