Precision-Machined Arm End Connectors

No MOQ Limit
From 1 to 10,000 parts
Free DFM Support
DFM analysis included
NDA Protection
Your IP is safe and secure
Lightweight Design
Optimized for max payload

Precision-Machined
Arm End Connectors

Our facility specializes in high-precision UAV arm end connectors, delivering complex geometries and strong structural integrity through advanced multi-axis CNC machining.

We process lightweight 7075 aluminum and carbon fiber, offering Anodizing or Chemical Film finishes. Our precision reaches +/-0.005mm, meeting strict engineering tolerances. We excel in small-batch production, ensuring rapid prototyping and cost-effective scalability for custom drone designs.

See drone frame arms.

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Manufacturing Process & Quality

Material Selection

Sourcing certified aerospace-grade metals and high-performance polymers to ensure maximum strength-to-weight ratios for extended drone flight times.

CNC Machining

Utilizing advanced 5-axis technology to achieve ultra-tight tolerances ±0.005mm for complex aerodynamic structures and internal housings.

Deburring & Cleaning

Precision finishing to eliminate micro-burrs and ultrasonic cleaning to ensure surfaces are free of oils, vital for flight electronics.

Surface Prep

Applying functional coatings like Hard Anodizing or Chemical Film for superior corrosion resistance and enhanced thermal dissipation.

Final Inspection

Rigorous verification using CMM and laser scanning to ensure every component aligns perfectly with your 3D CAD models.

Arm End Connectors Customization

We make custom connectors using precise CNC cutting, working with your specific designs, strong metals, and any required surface finishes.

Custom Geometry

Precision Fit

Lightweight Design

Corrosion Protection

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Technical Specs

Parameter	Specification
Item Name	Precision CNC Center Chassis Plates (Dual-Plate Stack System)
Size (DxL)	Custom: Optimized for 20x20mm and 30x30mm FC stacks; arm span 5″–10″
Process	5-Axis CNC Milling / High-Speed Routing / Chamfered Edge Deburring
Material	Aerospace Aluminum (6061-T6 for weight / 7075-T6 for high-stress racing)
Finish	Type II/III Hard Anodizing (Black/Custom) / Laser-Etched Torque Specs
Tolerances	+/-0.005 mm (Critical for stack alignment & arm interlocking)
Certificate	ISO 9001:2015 \| AS9100D

Frequently Asked Questions

Expert technical support for your UAV projects. We bridge the gap between complex aerospace designs and precision manufacturing.

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Our engineers provide DFM feedback within 12 hours to optimize your drone parts for weight, strength, and cost-efficiency.

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How do you guarantee the Alignment (Coaxiality) of the arm end connectors?

If the connector holes aren't perfectly centered, the drone arm will be crooked. This creates "thrust vectoring" issues where the drone drifts to one side. We use one-hit machining (drilling both ends in one setup) to ensure the arm and the motor mount are perfectly aligned on the same axis.

Can you maintain the tolerances needed for "Press-Fit" assembly?

Engineers need the arm to slide into the connector with zero "slop" or wiggle. A gap of even 0.05mm can cause vibrations that destroy flight controllers. We use precision boring to ensure your carbon fiber tubes fit snugly every time without needing excessive glue or force.

How do you prevent "Stress Cracks" at the folding pivot point?

The "Arm End Connector" is often the folding joint, which takes the most impact during landings. We use stress-relief radiusing (rounding out the internal corners) rather than sharp 90-degree cuts. This prevents the metal from snapping under the high leverage of a long drone arm.

What is your process for "IP Protection" on custom folding locks?

The locking mechanism is usually a company's "secret sauce." We provide Project-Specific NDAs. We also offer "blind manufacturing" where different components of a complex folding joint are machined by different teams, so no single person sees the entire assembly design.

Does the Surface Treatment (Anodizing) affect the inner diameter?

Anodizing adds a layer of material that can make the connector hole too small for the arm to fit. We mask the internal diameters during the chemical process or "over-machine" the hole by a few microns to account for the coating thickness, ensuring a perfect fit post-finish.

Can you provide "Material Traceability" for structural safety?

If an arm end connector snaps in mid-air, the drone falls. We provide Material Mill Certificates to prove we are using genuine 6061-T6 or 7075 aluminum, not cheaper, porous recycled alloys. This ensures the connector can handle the "G-forces" during high-speed turns.