--- product_id: 263303097 title: "M6 x 40mm (30 Pack) Hex Socket Flat Head Screws, 304 Stainless Steel 18/8, Full Thread Machine Screws for Furniture, 3D Printer, DIY, Machinery" brand: "roycemart" price: "$29.00" currency: USD in_stock: true reviews_count: 8 url: https://www.desertcart.us/products/263303097-m6-x-40mm-30-pack-hex-socket-flat-head-screws store_origin: US region: United States of America --- # M6 x 40mm precision size Full thread for max grip 304 Stainless Steel corrosion-proof M6 x 40mm (30 Pack) Hex Socket Flat Head Screws, 304 Stainless Steel 18/8, Full Thread Machine Screws for Furniture, 3D Printer, DIY, Machinery **Brand:** roycemart **Price:** $29.00 **Availability:** βœ… In Stock ## Summary > πŸ”§ Screw it right, screw it tight β€” the pro’s choice for lasting builds! ## Quick Answers - **What is this?** M6 x 40mm (30 Pack) Hex Socket Flat Head Screws, 304 Stainless Steel 18/8, Full Thread Machine Screws for Furniture, 3D Printer, DIY, Machinery by roycemart - **How much does it cost?** $29.00 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/263303097-m6-x-40mm-30-pack-hex-socket-flat-head-screws) ## Best For - roycemart enthusiasts ## Why This Product - Trusted roycemart brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Full Thread Design:** Ensures maximum hold and stability in every application - β€’ **Bulk Pack of 30 Screws:** Ready to power through multiple projects without running out - β€’ **Versatile DIY Essential:** Ideal for cabinetry, workbenches, headboards, and custom builds - β€’ **Premium 304 Stainless Steel:** Rust-resistant strength that endures moisture and temperature shifts - β€’ **Precision Engineered M6 x 40mm:** Perfectly sized for furniture, 3D printers & machinery projects ## Overview This pack of 30 M6 x 40mm flat head hex socket screws is crafted from premium 304 (18-8) stainless steel, offering full threading for superior grip and corrosion resistance. Engineered for furniture assembly, 3D printing, and machinery, these screws combine durability and precision to meet the demands of professional and DIY projects alike. ## Description Package Included 30 PCS M6 x 40mm Flat (Round) Head Socket Cap Screws About Flat Head Socket Cap Screws Flat head socket cap screw is a type of cap screw with a flat top surface. No exterior finish and no coating, the screws are made of the finest 100% stainless steel 304 (18-8) Application Automobile, machinery, electronics, assembling, construction, manufacturing industry, indoor and outdoor. Ideal Usage Joing wood, boards, kitchen worktops, cabinets, cupboards, tables and other furnitures, popular among DIYers. We specialized in providing full ranges of standard fasteners including fully customized packaging solutions to fulfill our customer's expectation. All products undergoes three level of quality testing and quantity checking before reaching our customers. ## Features - Thread Size: M6-1.0; Thread Pitch: 1.0mm; Screw Length (excluding the head height): 40mm - Allen Hex Drive Size: 4mm; Package: 30 PCS; - Head Height: 2.6mm; Head Diameter: 12.5mm; Thread Coverage: Full Machine Thread; - IDEAL USE for bed, table, workbench, headboard, cabinet, cupboard and other furnitures. Also used in 3D printer projects and other machinery industries. - Material: Premium Quality 304 (18-8) Stainless Steel, these screws combine strength and corrosion resistance to withstand moisture, temperature shifts, and harsh conditions without rusting or weakening over time ## Product Details - **Material:** Stainless Steel - **Thread Size:** M6-1.0 - **Exterior Finish:** Stainless Steel - **Manufacturer Grade:** Grade 304 - **Head Style:** Flat ## Images ![M6 x 40mm (30 Pack) Hex Socket Flat Head Screws, 304 Stainless Steel 18/8, Full Thread Machine Screws for Furniture, 3D Printer, DIY, Machinery - Image 1](https://m.media-amazon.com/images/I/51EcbTngowL.jpg) ![M6 x 40mm (30 Pack) Hex Socket Flat Head Screws, 304 Stainless Steel 18/8, Full Thread Machine Screws for Furniture, 3D Printer, DIY, Machinery - Image 2](https://m.media-amazon.com/images/I/21x0SKY9evL.jpg) ![M6 x 40mm (30 Pack) Hex Socket Flat Head Screws, 304 Stainless Steel 18/8, Full Thread Machine Screws for Furniture, 3D Printer, DIY, Machinery - Image 3](https://m.media-amazon.com/images/I/6153x3VG45L.jpg) ![M6 x 40mm (30 Pack) Hex Socket Flat Head Screws, 304 Stainless Steel 18/8, Full Thread Machine Screws for Furniture, 3D Printer, DIY, Machinery - Image 4](https://m.media-amazon.com/images/I/21EDndOMCZL.jpg) ![M6 x 40mm (30 Pack) Hex Socket Flat Head Screws, 304 Stainless Steel 18/8, Full Thread Machine Screws for Furniture, 3D Printer, DIY, Machinery - Image 5](https://m.media-amazon.com/images/I/31+KnVe6jkL.jpg) ## Available Options This product comes in different **Size, Number Of Items** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Good quality, clean threads, true to dimensions *by M***B on Reviewed in the United States on November 19, 2023* Quality screw. Nice clean machine screw threads. Hex head fitting allows quick and problem free tightening. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Replaced the bolts on beach rentals. *by S***N on Reviewed in the United States on November 14, 2023* Replaced the bolts on beach rental chairs. They are great. Don't rust or strip. Great upgrade for the business. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars The perfect screws for the job! *by S***N on Reviewed in the United States on December 12, 2023* I needed a handful of screws to finish building a desk that had an incomplete set of screws. I needed very specific sizes for each part of the desk and these screws from this seller did the trick perfectly! --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/263303097-m6-x-40mm-30-pack-hex-socket-flat-head-screws](https://www.desertcart.us/products/263303097-m6-x-40mm-30-pack-hex-socket-flat-head-screws) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-16*