---
product_id: 47943293
title: "ForgeFix Multi-Purpose Single Thread Screws | 4.0 x 40mm | Zinc | Box 200"
brand: "forgefix"
price: "FREE"
currency: EUR
in_stock: false
reviews_count: 13
url: https://www.desertcart.be/products/47943293-forgefix-multi-purpose-single-thread-screws-4-0-x-40mm
store_origin: BE
region: Belgium
---

# Flush double-countersunk head design Deep aggressive single thread for max grip Anti-corrosive zinc yellow passivation ForgeFix Multi-Purpose Single Thread Screws | 4.0 x 40mm | Zinc | Box 200

**Brand:** forgefix
**Price:** FREE
**Availability:** ❌ Out of Stock

## Summary

> 🔧 ForgeFix Screws: The Ultimate Grip for Every Project—Don’t Get Left Holding the Loose End!

## Quick Answers

- **What is this?** ForgeFix Multi-Purpose Single Thread Screws | 4.0 x 40mm | Zinc | Box 200 by forgefix
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/47943293-forgefix-multi-purpose-single-thread-screws-4-0-x-40mm)

## Best For

- forgefix enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Finish:** Double-countersunk head with integrated ribs sits flush, delivering a sleek, snag-free surface.
- • **Instant Grip Power:** Aggressive single-thread bites deep into timber and composites for unbeatable holding strength.
- • **Cam-Out Proof Drive:** Precision Pozi-Drive recess maximizes bit engagement, preventing stripping during high-torque installs.
- • **Rust-Resistant Armor:** Premium zinc yellow coating shields screws from corrosion, ensuring longevity in any environment.
- • **One Screw, Endless Uses:** Versatile fastening for timber, MDF, plastics, and masonry plugs—your all-in-one pro solution.

## Overview

ForgeFix Multi-Purpose Single Thread Screws (4.0 x 40mm) come in a 200-piece box featuring a premium zinc yellow passivated finish for superior rust protection. Engineered with an aggressive single thread for exceptional holding power in softwoods, hardwoods, and composites, these screws include a flush double-countersunk head for a clean finish and a Pozi-Drive recess to prevent cam-out. Ideal for professional tradespeople seeking reliable, versatile fastening across timber, MDF, plastics, and masonry applications.

## Description

Versatile single-thread woodscrews with deep recess for quicker, easier insertion. Wax coating and design provide increased holding power for various materials.

Review: Recommended - Very good for the price, I ordered different sizes to have a good stock. Quality seems good. Arrived quickly. Would recommend.
Review: 4x40mm screw. Does the job. - Works exactly as intended. Screw head strong and does not require Ng easily. Used with my impact driver and a #2pz but no problem. Can definitely recommend.

## Features

- ANTI-CORROSIVE YELLOW SHIELD - Finished with a premium zinc yellow passivated coating. This specialised chemical layer provides enhanced protection against rust and environmental corrosion compared to standard bright zinc.
- AGGRESSIVE SINGLE THREAD - Engineered with a deep, sharp single-thread pattern that bites immediately into timber. Delivers exceptional holding power and high pull-out resistance in softwoods, hardwoods, and chipboard.
- FLUSH COUNTERSUNK HEAD - Features a double-countersunk head design with integrated ribs. Cuts into the material surface seamlessly to sit completely flush with the timber, creating a clean, snag-free finish.
- NON-SLIP POZIDRIV INSERT - Outfitted with a precision-machined Pozi-Drive head recess. Ensures maximum driver bit engagement, reducing cam-out and allowing high-torque insertion without stripping the fastener.
- MULTI-MATERIAL VERSATILITY - The ultimate professional trade screw for a wide array of applications. Seamlessly fastens timber framing, MDF panels, blockboard, plastics, and wall plugs for brick masonry.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ENFPNNW |
| Best Sellers Rank | 2,074 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Self-tapping Screws |
| Brand Name | Forgefix |
| Colour | Multi-coloured |
| Customer Reviews | 4.6 out of 5 stars 3,238 Reviews |
| Drive System | Pozidriv |
| EU Spare Part Availability Duration | 1 Years |
| Exterior Finish | Zinc |
| Exterior finish | Zinc |
| Fastener Size | 4.0 x 40mm |
| Fastener Type | Wood Screws |
| Finish Types | Passivated Yellow Zinc |
| Global Trade Identification Number | 05028485132387, 05028485992431 |
| Head Type | Flat |
| Head style | Flat |
| Included Components | Multi-Purpose Pozi Compatible Screw CSK ST ZYP 4.0 x 40mm Box 200 |
| Item Diameter | 4 Millimetres |
| Item Dimensions | 10.5 x 8 x 5 centimetres |
| Item Highlight | Zinc Yellow Passivated Single-Thread Screws Countersunk Pozidrive Wood Fasteners for Timber Board MDF Plastic |
| Item Type Name | Multi-Purpose Pozi Compatible Screw CSK ST ZYP 4.0 x 40mm Box 200 |
| Item Weight | 0.88 Pounds |
| Item dimensions L x W x H | 10.5 x 8 x 5 centimetres |
| Manufacturer | ForgeFix |
| Manufacturer Part Number | FORMPS440Y |
| Material | Zinc |
| Material Type | Zinc |
| Metal | Stainless Steel |
| Model Number | MPS440Y |
| Number Of Items | 1 |
| Number of Pieces | 200 |
| Outside Diameter | 4 Millimetres |
| Point style | Type 17 Point |
| Screw Head Style | Flat |
| Screw Point Style | Type 17 Point |
| Set Name | ForgeFix Multi-Purpose Single Thread Screws (200 Piece Box) |
| Set Screw Thread Type | M |
| Size | 4.0 x 40mm |
| Thread Class | Metric |
| Thread Coverage | Fully Threaded |
| Thread Size | Threaded |
| Thread Style | Right Hand |
| Thread Type | Screw |
| Thread size | Threaded |
| Unit Count | 200.0 count |

## Product Details

- **Exterior finish:** Zinc
- **Head style:** Flat
- **Item dimensions L x W x H:** 10.5 x 8 x 5 centimetres
- **Material:** Zinc
- **Thread size:** Threaded

## Images

![ForgeFix Multi-Purpose Single Thread Screws | 4.0 x 40mm | Zinc | Box 200 - Image 1](https://m.media-amazon.com/images/I/51F9w7bA2FL.jpg)
![ForgeFix Multi-Purpose Single Thread Screws | 4.0 x 40mm | Zinc | Box 200 - Image 2](https://m.media-amazon.com/images/I/51C9yCxH+TL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Are these 4cm long?**
A: yes

**Q: Do I need to drill a hole first or are they self tapping**
A: It really depends on the material you are using and the finish you want. Personally I would always use a small pilot hole to guide the screw and prevent the wood splitting but I would also countersink the head too. It takes next to no time and gives a much better finish - but then I'm a bit old school  😁

**Q: ``im looking 5inches long in these can you tell me how long these are``**
A: They are 40 mm long - roughly 1.5 inches, so nowhere near long enough for you. 5 inches equates to around 125 mm.

**Q: Can you use these to put a toddler bed together**
A: They would work a treat, I put a six foot wooden garden fence up using these and it's still standing one year later.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Recommended
*by N***S on 27 August 2026*

Very good for the price, I ordered different sizes to have a good stock. Quality seems good. Arrived quickly. Would recommend.

### ⭐⭐⭐⭐⭐ 4x40mm screw. Does the job.
*by N***T on 17 August 2026*

Works exactly as intended. Screw head strong and does not require Ng easily. Used with my impact driver and a #2pz but no problem. Can definitely recommend.

### ⭐⭐⭐⭐ screws
*by K***3 on 5 June 2026*

good for the price

## Frequently Bought Together

- ForgeFix Multi-Purpose Single Thread Screws | 4.0 x 40mm | Zinc Yellow Passivated | Box 200
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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-09-17*