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A4040 MT/HS Micro Metal Gear HV Servo
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
Why choose A4040 MT/HS Micro Metal Gear HV Servo through RC-MODEL?
A4040 MT/HS Micro Metal Gear HV Servo is an RC product from Spektrum. This page focuses on what an end customer needs: fit, use cases, specifications and imagery, without prices or outbound supplier detours.
Fit and use
A4040 MT/HS Micro Metal Gear HV Servo fits customers looking for Spektrum items in Spektrum Catalog, Spektrum Servos, Spektrum Aircraft Electronics, with RC-MODEL support for choosing the right configuration.
- Relevant category: Spektrum Catalog, Spektrum Servos, Spektrum Aircraft Electronics
- Product identification for inquiry: model SPMSA4040 / SKU SPMSA4040
Key details
- Servo Operating Voltage: 4.8 - 8.4V (HV)
- Servo Size Category: Micro
- Maximum Servo Speed: 0.16 sec/60 deg @ 6.0V; 0.12 sec/60 deg @ 7.4V; 0.10 sec/60 deg @ 8.4V
- Maximum Servo Torque: 84 oz-in (6.05kg-cm) @ 6.0V; 91 oz-in (6.55kg-cm) @ 7.4V; 96 oz-in (7kg-cm) @ 8.4V
- Spektrum Category: Radios / Aircraft / Servos
- Product Family: Spektrum servo range
Before ordering
- Confirm dimensions, power system, radio compatibility or material size before purchase.
- Ask us to match required accessories, adhesives, hardware, batteries or replacement parts.
- RC-MODEL helps with fit checks, availability, compatible accessories and a formal quote in Israel.
A4040 MT/HS Micro Metal Gear HV Servo is a Spektrum product intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.
The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.
Key Advantages
- Organized under the Spektrum servo range.
- Intended for aircraft, helicopter, sailplane or multirotor radio installations where reliable control and setup clarity matter.
- Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Includes local product imagery and structured specifications for easier comparison inside RC-MODEL.
- High Voltage (HV) capable (4.8-8.4v input range)
- Micro size is perfectly suited for parkflyer and sport size model aircraft
- Class leading performance (7.0kg-cm and .094 sec/60° @8.4v)
Core Specifications
- Manufacturer: Spektrum
- Brand: Spektrum
- Product Code: SPMSA4040
- Product Family: Spektrum servo range
- Application: Airplane
- Compatibility Focus: Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Spektrum Category: Radios / Aircraft / Servos
- Input Voltage: 4.8V-8.4V
- Gear Type: Metal
- Bearing: Single BB
- Bushing Or Bearing: Bearing
- Connector Type: Universal
- Deadband: < 1µs
- Maximum Servo Speed: 0.16 sec/60 deg @ 6.0V; 0.12 sec/60 deg @ 7.4V; 0.10 sec/60 deg @ 8.4V
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
How to balance an RC aircraft and find the correct CG
One of the most important setup guides: find the CG, install the flight battery, balance the aircraft and avoid nose-heavy or tail-heavy surprises.
Mandatory pre-flight checks for safer RC flying
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
How to perform the first test flight of an RC aircraft
Ground checks, takeoff planning, trim passes, battery timing and first landing strategy for a new or repaired RC aircraft.
| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPMSA4040 |
| Spektrum Category | Radios / Aircraft / Servos |
| Connector Type | Universal |
| Product Family | Spektrum servo range |
| Application | Airplane |
| Compatibility Focus | Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering. |
| Input Voltage | 4.8V-8.4V |
| Product Height | 1.23" (31 mm) |
| Product Length | 1.1" (28 mm) |
| Product Weight | 0.9oz (26g) |
| Product Width | 0.54" (14 mm) |
| Programmable | No |
| Bearing | Single BB |
| Gear Type | Metal |
| Servo Operating Voltage | 4.8 - 8.4V (HV) |
| Servo Size Category | Micro |
| Servo Type | Digital |
| Spline Count | 23 - Tooth |
| Overload Protection | No |
| Water-Resistant | No |
| Wire Gauge | 22 AWG |
| Product Application | Air |
| Prop 65 | California Residents Prop 65 WARNINGS. |
| Maximum Servo Speed | 0.16 sec/60 deg @ 6.0V; 0.12 sec/60 deg @ 7.4V; 0.10 sec/60 deg @ 8.4V |
| Bushing Or Bearing | Bearing |
| Maximum Servo Torque | 84 oz-in (6.05kg-cm) @ 6.0V; 91 oz-in (6.55kg-cm) @ 7.4V; 96 oz-in (7kg-cm) @ 8.4V |
| Deadband | < 1µs |
Tags: Spektrum, SPMSA4040, Spektrum servo range, Spektrum Catalog, Spektrum Servos, Spektrum Micro Servos, Spektrum Aircraft Electronics, RC-MODEL