Custom Bolt Assembly Injection Molding & Assembly Service
Product Overview
Our Bolt Assembly Injection Molding Service provides high-strength, precision-engineered fastening components combining PA plastic knobs and stainless-steel threaded studs. These assemblies are widely used in industrial equipment, furniture, appliances, automation systems, and mechanical devices that require reliable hand-tightened fastening solutions.
With full in-house mold manufacturing and automated injection production, Benma delivers stable quality, high dimensional precision, and cost-effective large-scale manufacturing without the need for customer-supplied drawings.
Key Manufacturing Capabilities
- One-stop service: Design → Tooling → Molding → Assembly
- Multi-cavity high-precision mold design
- Integrated plastic injection + metal insert assembly
- Tight tolerance control for threaded connection accuracy
- Surface texture control: matte, glossy, anti-slip patterns
- Stable mass production with strict consistency control
Technical Specifications (Customizable)
|
Item |
Specification |
|
Product Type |
Plastic Knob + Stainless Steel Bolt Assembly |
|
Plastic Material |
PA6, PA66, Reinforced PA |
|
Metal Material |
Stainless Steel (SUS304 / SUS201) |
|
Thread Type |
M6 / M8 / M10 or Custom |
|
Head Diameter |
Customizable (e.g. 23-40 mm) |
|
Bolt Length |
Custom Length Available |
|
Color Options |
Black, Gray, Custom Colors |
|
Mold Type |
Multi-cavity Precision Injection Mold |
|
Assembly Process |
Automatic / Semi-automatic |
|
Tolerance |
±0.02–0.05 mm |
|
Certification |
ISO9001, SMETA |
Application Scenarios
Our plastic-metal bolt assemblies are widely used in:
Industrial machinery and automation equipment
Adjustable furniture and office equipment
Medical device housings
Electrical cabinets
Workshop fixtures and tooling systems
Sports and fitness equipment
Home appliances and ventilation equipment
Why Choose Benma for Bolt Assembly Molding
In-house Mold Tooling Factory
Control mold quality, lead time, and cost from the source.
Integrated Plastic & Metal Assembly
We provide complete bolt assembly, eliminating the need for secondary suppliers.
Stable Mass Production Capacity
Automated injection lines ensure consistent output and fast delivery.
Flexible Customization
Even without drawings, our engineers can complete structural design from samples or concepts.
Certified Manufacturing System
ISO9001 + SMETA ensure stable quality and ethical compliance.
Cost-Optimized Export Manufacturing
Direct factory pricing with export-grade quality control.
Our Company – Benma Injection Molding Manufacturer
BMA
Benma is a professional custom injection molding and mold manufacturing factory specializing in:
- Plastic product design
- Precision injection mold making
- Multi-material injection molding
- Plastic & metal assembly
- OEM / ODM manufacturing
We serve global customers in industrial equipment, home appliances, medical devices, pet products, and hardware components, with long-term exports to North America, Europe, and Asia.
Mold
Workshop
Processing Workshop
Material
Warehouse
Hardware
Workshop
Assembly
Workshop
Laboratory
How to Start Your Bolt Assembly Project
- Send Your Sample, Photo, or Concept
No drawing required.
- Design Evaluation & Quotation
We provide mold design proposal and mold + unit price.
- Mold Manufacturing & Sample Testing
Tooling lead time normally 20–35 days.
- Mass Production & Assembly
Automated injection + threaded bolt assembly.
- Final Inspection & Global Shipping
100% quality inspection before delivery.
Quality Control & Testing
Incoming material inspection
Mold trial dimensional verification
Torque & pull-out strength testing
Thread accuracy inspection
Assembly torque consistency testing
Final appearance and packaging inspection
Packaging & Export Support
Individual polybag / bulk carton packaging
Custom branding & labeling available
Export carton & pallet packing
Full shipping support: FOB / CIF / DDP
Contact Us Now – Get Free Engineering Evaluation
If you are looking for a reliable bolt assembly injection molding supplier, Benma is your trusted manufacturing partner.
Contact us today for:
Free design evaluation
Mold cost estimation
Sample development
Sample development
Your idea. Our mold. Your market success.
Injection Molding Workshop Planning
Designing separate zones for each production step helps maintain a smooth and efficient workflow.
Factory Equipment
With advanced production machinery, we deliver precise manufacturing and stable, efficient operations.
Packing and Shipping
●Customized Packing
We offer fully customized packaging solutions, including personalized logos, labels, and printed cartons. All export packages are reinforced with durable cartons or protective wooden frames and marked with standard shipping labels for safe transport.
● Shipping
For logistics, bulk orders are shipped efficiently by sea or air, while small orders and samples are delivered through trusted international couriers such as UPS, DHL, TNT, and FedEx.
FAQ
Q1: What information is needed for customization?
A1: Please provide CAD drawings, 3D files, or sample photos along with details such as material, surface treatment, and order quantity. We will send a quotation within 24 hours.
Q2: Will my design remain confidential?
A2: Yes. We can sign an NDA to ensure full protection of your intellectual property.
Q3: Can you add my brand logo?
A3: Yes, logos can be added through engraving, printing, or molded-in markings for plastic and silicone parts.
Q4: Can you reproduce parts from a sample?
A4: Yes, we can reverse-engineer your sample and manufacture it to match your specifications.
Q5: What payment terms do you accept?
A5: We accept T/T: 30% deposit and the remaining balance before shipment upon receiving the B/L copy.
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