M3 Brass Inserts – Precision Machined & Customizable
M3 brass inserts play a crucial role in various industries. They create strong and dependable connections for a wide range of applications despite their small size. Whether you’re a DIY enthusiast or a professional engineer, understanding how to use M3 inserts effectively can significantly improve the quality and longevity of your projects.
Product Name: M3 Brass Inserts
Thread Size: M3 (Metric)
Outer Diameter: 5.5 mm / 6.0 mm / 6.4 mm / Custom sizes on request
Material: High-Grade Brass (IS 319, CW614N, CZ121, RoHS-compliant)
Certifications: ISO 9001:2015 | IATF 16949:2016 | RoHS Compliant
Manufacturer: Bharti Enterprise, Jamnagar – India
Price Range: Starts from INR 1.50 per piece (bulk pricing available on request)
* Key Features:
- High torque resistance and excellent pull-out strength
- Suitable for thermoplastics, polycarbonate, ABS, nylon, and other injection molded parts
- Vibration-proof, corrosion-resistant, and long-lasting
- Precision CNC machined for consistent quality and tolerance
* Types of Knurling Available:
- Straight Knurling – For excellent axial retention
- Diamond Knurling (Cross Knurl) – For superior torque resistance
- Unidirectional Spiral Knurling – For self-tapping applications
- Double Helical Knurl – For aggressive grip in soft plastics
* Length Chart (Standard & Custom Options):
| Length (mm) | Outer Diameter (mm) | Knurling | Vanes | Thread Depth | Common Application |
| 4.0 | 5.5 / 6.0 / 6.4 | Diamond | 4 | Full Thread | PCB, Small Housings |
| 5.0 | 5.5 / 6.0 / 6.4 | Straight | 6 | Full Thread | Switch Covers |
| 6.0 | 6.0 / 6.4 | Spiral | 4 | Full Thread | Automotive Plastics |
| 8.0 | 6.4 | Diamond | 8 | Full Thread | Enclosures, Boxes |
| 10.0 | Custom | As per order | Custom | Full or Partial | High-load zones |
Custom lengths available from 3 mm to 25 mm on request.
* Vanes / Slots Options:
- 1 Vane – For general-purpose retention
- 2 Vanes – For better anti-rotation
- 3 Vanes – For high grip in high-load applications
- Vanes can be custom machined based on mold cavity requirements.
* Installation Methods:
- Ultrasonic Welding
- Heat Insertion
- Molded-In
- Press-Fit
* Finishing Options:
- Natural Brass Finish
- Nickel Plated
- Tin Plated
- Chrome / Silver Plated (on request)
* Applications:
- Electronics & PCB Housings
- Automotive Switch Panels
- Medical Devices
- Consumer Products
- 3D Printed Enclosures
* Custom Manufacturing Capabilities:
- Custom OD, thread depth, undercut, grooves, or head design
- Threads: ISO Metric (M3), UNC 4-40 (optional)
- Tolerance: ±0.02 mm
- High-Volume Production with Automatic Sorting & Inspection
