Custom Inject Plastic Enclosure - Pre-Drilled Holes for Connectors & Displays

Model: BH-Plastic Enclosure

Item specifics

Design: Follow 3D Drawing Or Physical Object

Process: Injection Molding

Feature: Secure & UL94

MOQ: 1000pcs

Application: Connector Cutouts Pre-Drilled

Review

Description

Custom Injection Molded Plastic Enclosures

Pre-Drilled & Tapped Holes for Connectors, Displays, and Controls

Precision-engineered thermoplastic enclosures manufactured with customer-specific hole patterns, threads, and cutouts for rapid integration of electronic components. Eliminate secondary machining operations and reduce assembly costs by 40-60%.

Custom injection molded plastic enclosure with pre-drilled holes for connectors, displays, and ventilation

Engineering & Economic Advantages

Eliminate Secondary Machining

Holes are molded-in with precise location, diameter, and thread specification. No post-molding drilling, tapping, or CNC operations required.

Reduce Assembly Costs 40-60%

Direct component mounting reduces labor, eliminates machining fixtures, and decreases assembly errors. Typical ROI within first production run.

Superior Dimensional Consistency

Molded-in features maintain ±0.15mm tolerance across thousands of parts. Superior to post-machining which introduces variability.

Technical Specifications & Manufacturing Capabilities

Category	Specifications & Details
Material Selection	Standard: ABS (UL94 HB), PC/ABS (UL94 V-0), Polycarbonate (UL94 V-0), Nylon 6/6 (UL94 V-2) Specialty: PP (chemical resistant), ASA (UV stable), PBT (high heat), Conductive compounds (ESD protection) Color: Any Pantone or RAL color; custom color matching available
Hole & Cutout Capabilities	Through Holes: Diameter 1.0mm to 25.0mm (tolerance ±0.15mm) Threaded Inserts: Molded-in threads M3 to M12; ultrasonic/heat-staked inserts available Display Windows: Rectangular, circular, custom shapes; can include molded-in lenses Ventilation Grids: Molded-in louvers, mesh patterns, and slots
Manufacturing Process	Injection Molding: 80-800 ton presses; hot runner systems for efficiency Tooling: Aluminum (prototypes), P20 steel (production); modular inserts for hole pattern changes Secondary Operations: Laser etching, pad printing, ultrasonic welding, assembly services Quality Control: First article inspection (FAI), CMM measurement, functional gaging
Typical Applications	Industrial controls, medical devices, IoT sensors, consumer electronics, automotive telematics, power supplies, communication devices, test & measurement equipment, kiosks, and handheld instruments.
Ordering & Lead Times	Prototypes: 10-15 business days (no tooling charge for standard materials) Production: 15-30 days after design approval MOQ: 500 pieces for custom designs; 100 pieces for modified standards Packaging: Custom foam, blister packs, or recyclable dividers available

Design Integration Process

Step 1: Component Layout Analysis

Our engineers analyze your PCB layout, connectors, displays, buttons, and cooling requirements to determine optimal hole placement, spacing, and wall thickness.

Step 2: DFM Review & Simulation

Design for Manufacturability (DFM) report includes mold flow analysis, stress points, and draft angle verification to ensure high yield and quality.

Step 3: Prototype Validation

3D-printed or rapid injection molded prototypes provided for physical fit-check with your components before production tooling.

Step 4: Production & Quality Assurance

Statistical process control (SPC) monitors critical dimensions. First article inspection reports include CMM data for all pre-drilled features.

Close-up view of custom pre-drilled hole patterns for various connectors and displays

Common Pre-Drilled Features

DB9, DB25, USB, HDMI, Ethernet ports
7-segment, LCD, TFT, OLED display cutouts
Tactile buttons, membrane switch openings
BNC, SMA, RF connector mounts
Cooling fan mounts with screw posts
Strain relief grooves for cables

Cost-Benefit Analysis: Molded-in vs. Post-Machined Holes

Factor	Custom Pre-Drilled Enclosure	Standard Enclosure + Post-Machining
Per-Unit Cost Impact	Minimal increase (5-15%) for molded-in features. No additional machining cost per piece.	Significant added cost (25-60%) for CNC drilling/tapping, fixturing, and secondary handling.
Lead Time	15-30 days after design approval. Features created during primary molding cycle.	Additional 5-15 days for secondary operations, plus scheduling delays.
Dimensional Consistency	±0.15mm tolerance maintained across entire production run via mold precision.	±0.25-0.5mm tolerance typical; variability from fixturing, tool wear, and operator error.
Assembly Labor	Reduced 40-60% – components mount directly into prepared holes/threads.	Additional alignment steps required; potential for cross-threading or misalignment.
Design Flexibility	High – complex shapes, undercuts, and multi-level holes possible in mold design.	Limited by drill bit geometry and CNC access; additional setups increase cost.