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 SG90 9G Micro Servo Motor Kit Metal Gear for Arduino RC Plane 10 Pcs

Product ID: 98268803

Details

Brand
Smraza
Item Weight
0.16 kg
Manufacturer
Smraza
Number of Items
10

🔋4.8-6V operating voltage range

⏱️0.08s/60° ultra-fast response

⚙️Metal gears & shaft for durability

€ 45.06

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Description

⚡ Gear up your projects with micro servo power that won’t quit!

UNBREAKABLE METAL GEARS - Say goodbye to plastic gear failures with upgraded metal pinion gears and shafts built to withstand heat and wear.
LIGHTNING FAST PRECISION - Experience rapid 0.08-second rotation per 60° for ultra-responsive control in your RC planes and robots.
PLUG PLAY COMPATIBILITY - Seamlessly integrates with Arduino, Raspberry Pi, and JR/FUTABA receivers via simple 3-pin PWM hookup.
POWERFUL TORQUE PERFORMANCE - Delivering 1.9 kg/cm stall torque ensures your micro servo handles demanding tasks with ease.
VERSATILE MULTI PROJECT READY - Perfect for micro-robots, RC helicopters, robotic arms, and DIY builds—unlock endless creative possibilities.

The Smraza SG90 9G Micro Servo Motor Kit features durable metal gears and shafts, a rapid 0.08s/60° running speed, and 1.9 kg/cm stall torque. Operating between 4.8V and 6V, it offers precise 180° motion control, ideal for Arduino and RC applications. This 10-pack kit is perfect for professionals and hobbyists seeking reliable, high-performance micro servos for robotics, RC planes, and DIY projects.

Specifications

ASIN	B07L2SF3R4
Best Sellers Rank	#31,434 in Toys & Games ( See Top 100 in Toys & Games ) #16 in RC Servos
Brand Name	Smraza
Customer Reviews	4.4 4.4 out of 5 stars (1,307)
Item Highlight	180°, 1.9kg·cm torque @6V, 0.08s/60° speed, 4.8–6V,metal motor gear & metal shaft for RC Airplane Robot Arm DIY
Item Weight	0.16 kg
Manufacturer	Smraza
Number of Items	10
Part Number	S51-4-U-F
Unit Count	10 Count

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€ 45.06

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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Fantastic experience overall. Will recommend to friends and family.

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