Brass Inserts
🏗️Brass Inserts – Product Overview
Brass Inserts are precision-machined fastening components designed to provide strong, durable, and reusable threads in plastic, wood, metal alloys, and composite materials. Manufactured from high-quality brass alloys, these inserts offer excellent mechanical strength, corrosion resistance, and stability under thermal or vibrational loads.
They are widely used in injection moulding, heat-set installations, ultrasonic embedding, press-fit assembly, and wood fastening operations.
⚙️ Material Specifications Brass Inserts
| Property | Specification |
|---|---|
| Base Material | Free Cutting Brass IS 319 Type I / BS 249 / ASTM B16 |
| Optional Material | Lead-Free Brass, CZ121/CZ122, High Copper Alloy |
| Hardness | 65–90 HB |
| Tensile Strength | 350–550 MPa |
| Melting Point | 900–940°C |
| Standards Supported | ISO, DIN, JIS, UNC/UNF |
🔩Design Features
Brass Inserts are available in multiple configurations to suit diverse applications:
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Helical Knurled Inserts – Maximum grip & torque resistance
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Straight Knurled Inserts – Balanced pull-out performance
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Cross/Diamond Knurled Inserts – High rotational locking
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Press-Fit Inserts – Installed without heat
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Heat-Set Inserts – Installed through controlled thermal expansion
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Ultrasonic Inserts – Embedded using ultrasonic vibrations
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Screw-In (Wood) Inserts – External threads for soft/hardwood
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Moulding Inserts – Overmoulded during injection moulding
Optional: Flanged inserts, closed-end inserts, long-length inserts, reverse knurling.
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Brass inserts
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Brass threaded inserts
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Brass moulding inserts
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Brass inserts for plastic
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Heat-set brass inserts
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Ultrasonic brass inserts
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Press-fit brass inserts
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Brass wood inserts
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Threaded inserts manufacturer
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Brass fasteners supplier
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Injection moulding inserts
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Brass inserts India
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Metal inserts for plastics
🧱 Applications Brass Inserts
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Electrical & electronic housings
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Automotive & EV components
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Furniture & woodworking joints
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Plastic injection moulded parts
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Consumer appliances
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Medical instrument enclosures
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Telecommunication equipment
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Industrial machinery
🧱Surface Finishes
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Natural Brass
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Nickel Plated
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Tin Plated
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Chrome Plated
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Zinc Plated
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Custom coatings on request
🧱Quality Control & Compliance
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100% visual & dimensional inspection
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GO/NO-GO thread gauge testing
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Knurl profile & depth verification
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Pull-out & torque mechanical tests
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RoHS & REACH compliant
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PPAP / IMDS available for OEM supply
Mechanical Performance
| Parameter | Typical Value |
|---|---|
| Pull-Out Strength | 350–1200 N (material dependent) |
| Torque Resistance | 1.0–6.0 Nm |
| Thread Tolerance | ISO Metric 6H / UNC / UNF |
| Operating Temperature | -20°C to +180°C (continuous) |
Standard Sizes
Metric Threads: M2, M2.5, M3, M4, M5, M6, M8, M10
Imperial Threads: 2-56, 4-40, 6-32, 8-32, 10-24, 1/4-20, etc.
Lengths, outer diameters, and hole size recommendations vary by type (heat-set, ultrasonic, knurled, etc.) and can be provided upon request.
Technical Data Table
| Parameter | Specification | Notes |
|---|---|---|
| Base Material | Free Cutting Brass IS 319 Type I / ASTM B16 / BS 249 | High machinability |
| Optional Materials | Lead-Free Brass, CZ121/CZ122, High Copper Alloy | Export-grade |
| Insert Types | Heat-Set, Ultrasonic, Press-Fit, Moulding, Screw-In (Wood) | For plastic/wood assemblies |
| Body Designs | Helical Knurled, Straight Knurled, Cross Knurled, Diamond Knurled | Optimized grip & torque |
| End Types | Through Thread / Blind (Closed End) | Application-specific |
| Thread Standards | ISO Metric (M), UNC, UNF | Precision-machined |
| Thread Tolerance | ISO 6H / UNC-UNF Class 2B | Consistent fastening |
| Hardness | 65–90 HB | Brass alloy dependent |
| Tensile Strength | 350–550 MPa | Typical |
| Pull-Out Strength | 350–1200 N | Host material dependent |
| Torque Resistance | 1.0–6.0 Nm | Knurl-based |
| Operating Temperature | –20°C to +180°C | Continuous |
| Corrosion Resistance | Excellent (Brass + available plating) | For demanding environments |
| Finish Options | Natural / Nickel / Chrome / Tin Plated | Custom on request |
| Compliance | RoHS, REACH | Safe for global supply |
| Installation Methods | Heat-Set / Ultrasonic / Press-Fit / Moulding / Screw-In | Multi-industry |
| QC Measures | Dimensional check, Thread GO/NO-GO, Pull-out test | 100% inspection available |
Metric Size Chart (M2–M10)
| Thread Size | Outer Diameter (OD) (mm) | Length (mm) | Recommended Hole Diameter (mm) | Installation Types |
|---|---|---|---|---|
| M2 | 3.5 – 4.0 | 3.0 – 5.0 | 3.0 – 3.3 | Heat-Set / Ultrasonic |
| M2.5 | 4.0 – 5.0 | 4.0 – 6.0 | 3.5 – 3.8 | Heat-Set / Press-Fit |
| M3 | 4.5 – 6.0 | 5.0 – 8.0 | 4.0 – 4.5 | All Types |
| M4 | 6.0 – 7.0 | 6.0 – 10.0 | 5.5 – 6.0 | Heat-Set / Press-Fit / Moulding |
| M5 | 7.0 – 8.0 | 8.0 – 12.0 | 6.5 – 7.0 | All Types |
| M6 | 8.0 – 9.5 | 8.0 – 14.0 | 7.5 – 8.2 | All Types |
| M8 | 10.0 – 12.0 | 10.0 – 16.0 | 9.0 – 10.5 | Moulding / Screw-In |
| M10 | 12.0 – 14.0 | 12.0 – 20.0 | 11.0 – 12.5 | Moulding / Screw-In |
More Information:
Sample Time:Available in 5-10 days for different items.
Drawing Format:CAD / PDF / DWG / IGS / STEP.
Packaging:Standard package, Carton box or Pallet, As per customized specifications
Shipping:DHL, FEDEX, UPS and By Sea or as per client’s requirements.
