---
product_id: 429968709
title: "Black Suction Cup"
price: "€ 36.76"
currency: EUR
in_stock: true
reviews_count: 7
url: https://www.desertcart.pt/products/429968709-black-suction-cup
store_origin: PT
region: Portugal
---

# 3.94 inch Suction Diameter M8 Thread Precision Zinc-Plated Rust Resistance Black Suction Cup

**Price:** € 36.76
**Availability:** ✅ In Stock

## Summary

> 🧲 Secure your projects with the ultimate suction power adapter!

## Quick Answers

- **What is this?** Black Suction Cup
- **How much does it cost?** € 36.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/429968709-black-suction-cup)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful Grip:** Generous 3.94-inch suction cup diameter delivers superior adsorbability for firm, reliable hold.
- • **Precision Fit:** M8 threaded design ensures seamless integration with your linear actuators and DIY projects.
- • **Compact & Lightweight:** At just 3.2 ounces and under 4 inches tall, it’s easy to handle without compromising strength.
- • **Engineered for Endurance:** Crafted from iron and aluminum alloy with advanced galvanizing for unbeatable rust protection.
- • **Versatile Industrial Use:** Perfect for reciprocating linear actuators and a wide range of industrial connection needs.

## Overview

The JQDML Suction Cup Adapter features a robust M8 threaded iron and aluminum alloy build with zinc plating to prevent rust. Its 3.94-inch suction cup diameter offers high adsorbability, making it ideal for industrial applications like reciprocating linear actuators and DIY connector needs. Compact and durable, it’s engineered for long-lasting, reliable performance.

## Description

JQDML Suction Cup Adapter | M8 Thread, 3.94 Inch Diameter, DIY End Connectors, for Reciprocating Linear Actuator: desertcart.com: Industrial & Scientific

Review: Necessary! - This is the perfec and necessary finishing touch to the rest of the set up.
Review: Good product - Built good and it holds up pretty well.

## Features

- Material: Iron;Aluminium alloy.
- Surface treatment: Zinc Plated.The surface of the nut is treated with an advanced galvanizing process to prevent rust.
- Size: 10cm/3.94inch suction cup dia, 4cm/1.57 inch height.Thread size: M8
- Durable and Firmly -Durable for long time use,extremely smooth with high adsorbability.
- Application: Reciprocating Linear Actuator/for industrial connection purposes/for DIY

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.3 out of 5 stars 57 Reviews |

## Images

![Black Suction Cup - Image 1](https://m.media-amazon.com/images/I/51XLtQm-+bL.jpg)
![Black Suction Cup - Image 2](https://m.media-amazon.com/images/I/51742A7CT7L.jpg)
![Black Suction Cup - Image 3](https://m.media-amazon.com/images/I/51X2vGyA5wL.jpg)
![Black Suction Cup - Image 4](https://m.media-amazon.com/images/I/61e-xaX3p0L.jpg)
![Black Suction Cup - Image 5](https://m.media-amazon.com/images/I/51A0z9RAkjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Necessary!
*by J***N on February 6, 2026*

This is the perfec and necessary finishing touch to the rest of the set up.

### ⭐⭐⭐⭐⭐ Good product
*by C***Y on November 12, 2023*

Built good and it holds up pretty well.

### ⭐⭐⭐ JQDML screw adapter
*by F***F on December 12, 2025*

The materials used are good, however the quality of work leaves something to be desired. The stem and the flat surface are not square so when installed upon shaft of equipment tooling is off at an angle.

## Frequently Bought Together

- JQDML M8 Screw, 3.94 inch Diameter, DIY End Connectors Suction Cup Adapter for Reciprocating Linear Actuator
- JQDML Upgrade Powerful Motor DIY Reciprocating Linear Actuator DC 24V 120rpm High Torque 40 lbs Adjustable Stroke 30-150mm/1.18-6” with Switching Power Supply(24V150mm120rpm)
- Stand Kit for JQDML Reciprocating Linear Actuator Motor Stand Size 8mm, Aluminum Alloy Material , Angle Adjustable with Installation Tools

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**Shop now:** [https://www.desertcart.pt/products/429968709-black-suction-cup](https://www.desertcart.pt/products/429968709-black-suction-cup)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-01*