--- product_id: 344915728 title: "4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs" brand: "topywmsp" price: "S$17" currency: SGD in_stock: true reviews_count: 8 category: "Topywmsp" url: https://www.desertcart.sg/products/344915728-4x40mm-wood-screws-flat-head-zinc-galvanized-100pcs store_origin: SG region: Singapore --- # Heat-treated high tensile strength 4x40mm precision size 72h salt spray corrosion resistance 4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs **Brand:** topywmsp **Price:** S$17 **Availability:** ✅ In Stock ## Summary > 🔩 Screw it right, screw it tight — the pro’s choice for lasting builds! ## Quick Answers - **What is this?** 4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs by topywmsp - **How much does it cost?** S$17 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/344915728-4x40mm-wood-screws-flat-head-zinc-galvanized-100pcs) ## Best For - topywmsp enthusiasts ## Why This Product - Trusted topywmsp brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power-Ready:** Perfectly engineered Phillips head for smooth manual & electric driving - • **Built to Last:** Thicker zinc coating for unbeatable rust protection - • **Versatile Fixings:** Ideal for wood, plasterboard, concrete, plastic & more - • **Bulk Pack Advantage:** 100 screws to power through any project without pause - • **Strength You Can Trust:** Heat-treated alloy steel ensures maximum hardness and durability ## Overview TOPYWMSP 4x40mm Wood Screws come in a bulk pack of 100, featuring a flat Phillips head and a robust zinc galvanized finish that withstands 72 hours of salt spray without rusting. Crafted from heat-treated alloy steel, these fully threaded screws deliver superior tensile strength and versatility across multiple materials including wood, concrete, and plastic, making them an essential tool for both home improvement and professional projects. ## Description TOPYWMSP 4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs : desertcart.co.uk: Business, Industry & Science Review: Good - As described good quality Review: Good - Great came with drill screw head which was nice and sharp. ## Features - HEAVIER&THICKER：When the quantity and model are the same,Our screws are heavier;zinc coating is thicker. - HIGH CORROSION RESISTANCE:The screws are yellow zinc passivated and to withstand 72 hours salt spray test, never rust is guaranteed. - HIGH STRENGTH:The outdoor screws have high Strength philips head,Perfect match with manual and electric screwdrivers. - HIGH HARDNESS:These self tapping screws are heat treatment improves the tensile strength. - VARIOUS PRODUCT USES：High performace for the home and engineering,These flat head screws can used for wood、plasterboard、chipboard、concrete、wall、deck、plastic. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B097BR3ZT4 | | Best Sellers Rank | 441 in DIY & Tools ( See Top 100 in DIY & Tools ) 2 in Screws (DIY & Tools) | | Brand Name | TOPYWMSP | | Colour | Yellow | | Compatible Groove Diameter | 4 Millimeters | | Country Of Origin | China | | Customer Reviews | 4.4 out of 5 stars 181 Reviews | | Drive System | Phillips | | Exterior Finish | Zinc | | Exterior finish | Zinc | | Fastener Size | 4x40mm | | Fastener Type | Wood Screws | | Finish Types | Zinc Plated | | Head Type | PH2 | | Head style | Cross Flat Head | | Item Diameter | 4 Millimetres | | Item Dimensions | 4 x 4 x 40 millimetres | | Item dimensions L x W x H | 4 x 4 x 40 millimetres | | Manufacturer | Zhengzhou HP Ltd | | Manufacturer Part Number | ZZWLSA08078 | | Material | alloy_steel，Carbon Steel， Zinc Passivated | | Material Type | alloy_steel，Carbon Steel， Zinc Passivated | | Metal | alloy_steel，Carbon Steel， Zinc Passivated | | Number Of Items | 100 | | Number of Pieces | 100 | | Outside Diameter | 4 Millimetres | | Point style | Sharp | | Screw Head Style | Cross Flat Head | | Screw Point Style | Sharp | | Set Name | 4x40mm Wood Screws (100pcs) | | Set Screw Thread Type | UNC | | Size | 4x40mm | | Thread Coverage | Fully Threaded | | Thread Size | M4 x 40mm | | Thread Style | Right Hand | | Thread Type | Metric | | Thread size | M4 x 40mm | | Unit Count | 100 count | ## Product Details - **Exterior finish:** Zinc - **Head style:** Cross Flat Head - **Item dimensions L x W x H:** 4 x 4 x 40 millimetres - **Material:** alloy_steel，Carbon Steel， Zinc Passivated - **Thread size:** M4 x 40mm ## Images ![4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs - Image 1](https://m.media-amazon.com/images/I/51lXaub7TBL.jpg) ![4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs - Image 2](https://m.media-amazon.com/images/I/51wJ-NF6DgL.jpg) ![4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs - Image 3](https://m.media-amazon.com/images/I/619i8UtZ2kL.jpg) ![4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs - Image 4](https://m.media-amazon.com/images/I/71xPANjkYEL.jpg) ![4x40mm Wood Screws, Flat Head, Zinc Galvanized, 100pcs - Image 5](https://m.media-amazon.com/images/I/71GM8r-IObL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good *by R***N on 6 July 2026* As described good quality ### ⭐⭐⭐⭐ Good *by A***R on 13 September 2026* Great came with drill screw head which was nice and sharp. ### ⭐⭐⭐⭐⭐ Just the Job *by T***O on 31 May 2026* Used on a new fence to strengthen and keep in place. These screws have done the job and couldn't be more pleased. Would recommend. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/344915728-4x40mm-wood-screws-flat-head-zinc-galvanized-100pcs](https://www.desertcart.sg/products/344915728-4x40mm-wood-screws-flat-head-zinc-galvanized-100pcs) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-05*