---
product_id: 96481772
title: "R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module"
brand: "walfront"
price: "€ 26.51"
currency: EUR
in_stock: true
reviews_count: 13
category: "Walfront"
url: https://www.desertcart.nl/products/96481772-r31-prototype-screw-terminal-block-board-kit-terminal-blocks-module
store_origin: NL
region: Netherlands
---

# Supports 5V operation Compact 4.73x3.04 inch PCB 84 screw terminal contacts R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module

**Brand:** walfront
**Price:** € 26.51
**Availability:** ✅ In Stock

## Summary

> 🔧 Build smarter, connect faster, prototype like a pro!

## Quick Answers

- **What is this?** R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module by walfront
- **How much does it cost?** € 26.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/96481772-r31-prototype-screw-terminal-block-board-kit-terminal-blocks-module)

## Best For

- walfront enthusiasts

## Why This Product

- Trusted walfront brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible Assembly:** Unassembled design lets you customize mounting and wiring methods
- • **Plug & Play Ready:** Perfect fit for Arduino Mega and other prototyping boards—join the maker elite
- • **Precision Engineering:** 84 pins with 2.54mm pitch for seamless, reliable connections
- • **Durable & Long-lasting:** High-quality steel screws and FR-4 glass fiber PCB ensure extended service life
- • **Versatile Prototyping Hub:** Includes PCB, terminal blocks & female headers for all your circuit needs

## Overview

The R31 Prototype Screw Terminal Block Board Kit is a compact, high-quality prototyping solution featuring 84 screw terminal contacts, a durable FR-4 PCB, and versatile female header sockets. Designed for flexible assembly and reliable 5V circuit connections, it’s ideal for professional makers and engineers seeking precision and longevity in their projects.

## Description

Specifications: PCB: PCB size 12.024 × 7.72cm/4.73 × 3.04inch Pads grid / pitch: 2.54mm / 0.1", hole diameter 0.8mm. Terminal block pitch: 3.5mm / 0.138", hole diameter 1.2mm. Terminal Block: Pitch: 3.5mm / 0.138" mini terminal blocks, total 84 pins(3pole x24pcs,2pole x6pcs). Wire range: 26~16AWG, strip length 5mm, screws M2 steel, pin header and cage brass. Female Header Socket: Pitch: 0.1"/2.54mm, pin length 15mm / 0.59" Single row 10pin × 1pcs, single row 8pin × 5pcs, row 18pin × 1pcs Weight:73g Package includes: 1 set × Terminal Block Board Kit

Review: Good Product, but pay attention - I ordered two of these. There are no instructions, but you just repeat the picture. The first one went like clockwork and fit perfectly into the Arduino Mega. But the second one... I did not pay attention. You are supposed to insert all of the pieces into the side with the writing. I did the opposite and ruined the board. I have been here before, even with the best solder wick available to remove all of the gear from the wrong side never works out. I ordered another one.
Review: Just what I was looking for. Perfect and priced right. - Some reviews said the ink screening is not right, but my board is perfect. The screening labels on the board do not line up with the mega board, they line up with the output screw connections and the inner bead board connection points. The board must be assembled so the connections must be soldered on the board. If you can do this, then you will have problems

## Features

- RICH COMPONENTS---The prototype screw terminal block board includes prototype PCB, terminal blocks, and female header sockets, satisfying your working needs
- FLEXIBLE USE---Without assembled, the prototype screw terminal block board allows you to try variety mount methods, so that you can use it flexibly
- LONG SERVICE PERIOD---Made of of material, and with delicate workmanship treatment, the prototype screw terminal block board has long serving life, practical and economic
- COMPACT STRUCTURE---With compact structure, the prototype screw terminal block board is made up of screw terminal block, PCB carrier, FR-4 glass fiber PCB
- EXCELLENT AFTER SALE SERVICE---Except the premium product we provide, we also provide considerate after sale service. Please us for any problem about our product. It is our pleasure to service you

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07JM8RWS9 |
| Best Sellers Rank | #454,631 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #995 in Prototyping Boards & Accessories |
| Brand | Walfront |
| Centerline Length | 7.72 Centimeters |
| Connector Type | Screw |
| Date First Available | October 22, 2018 |
| Gauge | 16.0 |
| Item Pitch | 0.14 Inches |
| Item Weight | 2.46 ounces |
| Item model number | Wal front6dgrgb9etm |
| Manufacturer | Wal front |
| Material | steel |
| Mounting Type | PCB Mount |
| Number Of Contacts | 84 |
| Number Of Poles | 84 |
| Product Dimensions | 4.73"W x 3.04"H |
| UPC | 757686438442 |
| Voltage | 5 Volts |

## Product Details

- **Brand:** Walfront
- **Connector Type:** Screw
- **Gauge:** 16.0
- **Item Pitch:** 0.14 Inches
- **Material:** steel
- **Mounting Type:** PCB Mount
- **Number Of Contacts:** 84
- **Number Of Poles:** 84
- **Product Dimensions:** 4.73"W x 3.04"H
- **Voltage:** 5 Volts

## Images

![R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module - Image 1](https://m.media-amazon.com/images/I/61bc7kd3gQL.jpg)
![R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module - Image 2](https://m.media-amazon.com/images/I/71TB07jLcgL.jpg)
![R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module - Image 3](https://m.media-amazon.com/images/I/61cJzIXUi8L.jpg)
![R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module - Image 4](https://m.media-amazon.com/images/I/71a3TuUIhbL.jpg)
![R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module - Image 5](https://m.media-amazon.com/images/I/51LNohCNOOL.jpg)

## Questions & Answers

**Q: Does the board come pre-assembled?**
A: When i revived the board it was in component pieces including a Circuit board, 7x SIP headers, a switch, and dozens of green screw terminal blocks. All had to be soldered to the Board. approx 110 solder joints.

**Q: How do I assemble the board? Is there a video?**
A: There is no video that I know of but assembling the board is fairly straightforward. Assuming you have good soldering skills. There are outlines for the reset button and double row pin header. The remaining headers can be installed by following the photos on Amazon. As for the green screw terminals, they need to be snapped together in the appropriate number of terminals per side. They come in 2s and 3s. Like I said above, the photos on Amazon can be a great reference help.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good Product, but pay attention
*by F***D on December 12, 2025*

I ordered two of these. There are no instructions, but you just repeat the picture. The first one went like clockwork and fit perfectly into the Arduino Mega. But the second one... I did not pay attention. You are supposed to insert all of the pieces into the side with the writing. I did the opposite and ruined the board. I have been here before, even with the best solder wick available to remove all of the gear from the wrong side never works out. I ordered another one.

### ⭐⭐⭐⭐⭐ Just what I was looking for. Perfect and priced right.
*by S***M on January 19, 2024*

Some reviews said the ink screening is not right, but my board is perfect. The screening labels on the board do not line up with the mega board, they line up with the output screw connections and the inner bead board connection points. The board must be assembled so the connections must be soldered on the board. If you can do this, then you will have problems

### ⭐⭐⭐⭐⭐ Real value for the money
*by M***. on May 6, 2021*

This makes hooking up to a Mega or Adafruit Grand Central very easy. Having both the terminal blocks and the regular pin array make testing and other items very easy. Assembly, while tedious, is very simple.

## Frequently Bought Together

- R31 Prototype Screw Terminal Block Board Kit Terminal Blocks Module
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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-09*