What are the names of these screws?

Hi. The longer two screws are PA2*8(2×8mm). The another is KM2*4(2×4mm). Hope it helps you.

How would the motor respond to a 5V pulse from a momentary push button?

Hi. Servo provides 500~2500 usec pulse signal under 5V voltage. The servo will directly rotate to the angle corresponding to the pulse value. Hope you have a good experience with our products.

Has anyone used these for model train N scale Peco switches?

Hello. There is no prescribed use equipment, and multiple assemblies and combinations can be cited. But need to meet the required voltage conditions. When you are using the servo, the voltage needs to reach 4.8-6V, connect the signal to the servo.

Do these have wires to connect to a battery pack?

To go to a battery pack, 5V or 4.5V, you may cut off the red wire from the 3-pin female connector and go to the plus of the battery. The orange or yellow wire must go to a PWM signal, usually from an Arduino using analogWrite. Black or brown wire goes to Arduino ground AND battery negative.

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Smraza 10 Pcs SG90 9G Micro Servo Motor Kit for RC Robot Arm/Hand/Walking Helicopter Airplane Car Boat Control with Cable, Mini Servos for Arduino Project

Smraza 10 Pcs SG90 9G Micro Servo Motor Kit for RC Robot Arm/Hand/Walking Helicopter Airplane Car Boat Control with Cable, Mini Servos for Arduino Project

Product ID: 256693810

Details

Brand
Smraza
Item weight
0.16 Kilograms
Material
Plastic
Model name
S51
Number of Items
10

🔌Wide 4.8-6V voltage range

⏱️Ultra-fast 0.08s/60° speed

⚙️Metal gears for durability

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242 zł

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Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Elevate your DIY game with micro servo mastery!

COMPACT YET MIGHTY - Miniature 9g servos deliver 1.9 kg/cm stall torque across a full 180° sweep—small size, big impact.
LIGHTNING FAST RESPONSE - Achieve microsecond-level servo speed (0.08s/60°) for ultra-smooth, precise robotic movements.
PLUG PLAY COMPATIBILITY - Seamlessly integrates with Arduino & Raspberry Pi via simple 3-pin PWM hookup—perfect for your next DIY innovation.
PRECISION METAL GEAR UPGRADE - Say goodbye to plastic gear failures—engineered for long-lasting, heat-resistant performance.
VERSATILE MULTI PROJECT POWERHOUSE - From RC helicopters to robotic arms, this 10-pack kit fuels all your creative tech builds with reliable torque and range.

The Smraza 10 Pcs SG90 9G Micro Servo Motor Kit features upgraded metal gears for enhanced durability, ultra-fast 0.08s/60° running speed, and a robust 1.9 kg/cm stall torque. Compatible with Arduino and Raspberry Pi, these mini servos offer precise 180° motion control across a 4.8-6.0V operating voltage range, making them ideal for RC models, robotic arms, and compact DIY projects.

Specifications

ASIN	B07L2SF3R4
Best Sellers Rank	#44,409 in Toys ( See Top 100 in Toys ) #41 in RC Vehicle Servos
Brand Name	Smraza
Customer Reviews	4.5 4.5 out of 5 stars (1,049)
Included Components	SG90 9G Micro Servo Metal Geared Motor Ki
Item Type Name	servomotor
Item Weight	0.16 Kilograms
Manufacturer	Smraza
Material Type	Plastic
Model Name	S51
Part Number	S51-4-U-F
Unit Count	10 Count

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