Metal Injection Molding Parts

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High accurate MIM (metal injection molding) parts have being widely used in the field of automotive, aerospace, firearms, medical, and consumer electronic and mechanical components industries.
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MIM Sintered Earphone Connector Component

Product Presentation

This earphone connector component is produced by metal injection molding, forming the small bracket and connector features in a near-net-shape sintered part. Sintered stainless steel provides the high precision and smooth surface finish required for true wireless earphones and audio accessories.

MIM Sintered Earphone Connector Component - view 1

MIM Sintered Earphone Connector Component - view 2

MIM Sintered Earphone Connector Component - view 3

MIM Sintered Earphone Connector Component - view 4

Key Features

Small bracket and connector features formed by MIM
High precision and smooth surface finish from sintered stainless steel
Excellent detail reproduction for small consumer electronics parts
High dimensional consistency across high-volume production
Customizable: geometry, material and surface finish

Technical Specifications

Process	Metal injection molding (MIM) + sintering
Material	Stainless steel 316L / 17-4PH / 430
Density	96-98% of theoretical density
Tolerance	±0.3% of dimension (typical)
Surface finish	Shot blasting, passivation, PVD coating
Max size	Up to 50 mm typical
Volume	Suitable from 5,000 pcs/year and above
Lead time	15-20 days after tooling approval
Quality control	100% dimensional and appearance inspection

Applications

True wireless (TWS) earphones
Wired earphones and headsets
Audio and consumer electronics
Wearable device components
Custom MIM audio parts

Why Choose MDM

One-stop service from drawing review, tooling to mass production
ISO 9001 certified manufacturing with full inspection reports
Competitive pricing with on-time delivery worldwide
Free DFM feedback for cost and quality optimization
Fast response within 24 hours for all inquiries

Request a quote for your custom parts — send us your drawings, we reply within 24 hours.

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