--- product_id: 72755942 title: "- 2 Pack M8 x 40mm (5/16\" x 1-5/8\") Thread Replacement Star Hand Knob Tightening Screw" brand: "kasteco" price: "70.60 DT" currency: TND in_stock: true reviews_count: 8 category: "Kasteco" url: https://www.desertcart.tn/products/72755942-2-pack-m8-x-40mm-5-16-x-1-5 store_origin: TN region: Tunisia --- # M8 x 40mm precision thread Durable metal + plastic build Torx drive for secure tightening - 2 Pack M8 x 40mm (5/16" x 1-5/8") Thread Replacement Star Hand Knob Tightening Screw **Brand:** kasteco **Price:** 70.60 DT **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your grip game with precision & power! ## Quick Answers - **What is this?** - 2 Pack M8 x 40mm (5/16" x 1-5/8") Thread Replacement Star Hand Knob Tightening Screw by kasteco - **How much does it cost?** 70.60 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/72755942-2-pack-m8-x-40mm-5-16-x-1-5) ## Best For - kasteco enthusiasts ## Why This Product - Trusted kasteco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual-Pack Value:** Two high-quality hand knob screws included—ready to upgrade multiple projects or backups. - • **Torx Drive System:** Enhanced torque control prevents stripping and ensures reliable, long-lasting fastening. - • **Versatile Industrial Grade:** Perfect for mechanical, pharmaceutical, and food equipment—trusted by pros. - • **Robust Metal & Plastic Fusion:** Combines corrosion-resistant alloy steel with ergonomic plastic for strength and comfort. - • **Precision Engineered M8 Thread:** Exact 8mm diameter with 1.25mm pitch for flawless fit and maximum grip. ## Overview This 2-pack of M8 x 40mm hand knob tightening screws features fully threaded, corrosion-resistant alloy steel shafts paired with ergonomic plastic knobs. Designed for industrial and mechanical applications, they deliver secure fastening with a Torx drive system, ensuring durability and ease of use across equipment in food, pharmaceutical, and mechanical industries. ## Description Specifications: Material:Metal + Plastic Color:Silver Tone, Black Package includes: 2 x hand knob tightening screw Review: Fixed my canopy - This fixed my canopy swing. These are much better quality than the ones the swing came with which were plastic. The size was a fit and priced well! These screws will hold up more than the plastic. Review: Game changer!! - This was a game changer. I ordered this use on my adjustable pool basketball hoop. It was perfect!! ## Features - Screw size: M8-1.25 x 40mm (5/16"-24 x 1-5/8")，The thread diameter is 8mm, the pitch is 1.25mm, and the length is 40mm. - Note: Please check the size before purchasing. - Package included: 2 x hand knob tightening screw,M8 x 40mm (5/16" x 1-5/8") - Material: Metal + Plastic - Widely used for mechanical equipment, instruments, apparatus, food and pharmaceutical industry equipment. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DLRRB3Z | | Best Sellers Rank | #89,950 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #533 in Cabinet & Furniture Knobs | | Brand | Kasteco | | Color | Silver | | Compatible Groove Diameter | 8 Millimeters | | Customer Reviews | 4.4 out of 5 stars 949 Reviews | | Drive System | Torx | | Exterior Finish | Black Oxide | | Fastener Size | M8 | | Fastener Type | Machine Screw | | Finish Types | Powder Coated | | Head Style | Flat | | Head Type | Hex | | Included Components | Knob, Lock | | Item Diameter | 8 Millimeters | | Item Dimensions | 1.52 x 0.87 x 0.04 inches | | Item Weight | 0.01 Ounces | | Item dimensions L x W x H | 1.52 x 0.87 x 0.04 inches | | Manufacturer | KTZZ | | Material | Plastics and Metals | | Material Type | Plastics and Metals | | Metal Type | Alloy Steel | | Number of Pieces | 2 | | Point Style | Round Point | | Screw Head Style | Flat | | Screw Point Style | Round Point | | Set Screw Thread Type | Metric | | Size Name | 40mm | | Thread Coverage | Fully Threaded | | Thread Size | M8 | | UPC | 675663909047 | | Unit Count | 2 Count | ## Product Details - **Exterior Finish:** Black Oxide - **Head Style:** Flat - **Item dimensions L x W x H:** 1.52 x 0.87 x 0.04 inches - **Material:** Plastics and Metals - **Thread Size:** M8 ## Images ![- 2 Pack M8 x 40mm (5/16" x 1-5/8") Thread Replacement Star Hand Knob Tightening Screw - Image 1](https://m.media-amazon.com/images/I/61fCp5TL50L.jpg) ## Questions & Answers **Q: Does this fit the willow springs swing canopy? 20 or 40mm.** A: Not sure the thread pitch of your project, M8 equals the bolt diameter, 20mm/40mm is the length of the bolt, 20mm = about 3/4", 40mm = about 1.5". You still need to know what the " pitch of the thread" is. Metric threads are made in different "pitchs" Ex: 1.00, 1.25 pitch. Doesn't say the pitch of the bolt in the Amazon Offer. Best to take your bolt to a hardware store and try different metric nuts on it to find what the "Pitch" is, then look on Amazon to find a match. **Q: M8x1.0 or M8x1.25?** A: M8 x 1.25 **Q: Will this fit the DB method exercise machine?** A: As long as the nut is a M8 x 40 mm **Q: Do you offer an M6 x 40 in 304 stainless?** A: no, thank you ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fixed my canopy *by A***Y on November 5, 2025* This fixed my canopy swing. These are much better quality than the ones the swing came with which were plastic. The size was a fit and priced well! These screws will hold up more than the plastic. ### ⭐⭐⭐⭐⭐ Game changer!! *by J***5 on October 27, 2025* This was a game changer. I ordered this use on my adjustable pool basketball hoop. It was perfect!! ### ⭐⭐⭐⭐⭐ Perfect fit *by M***L on June 19, 2025* Thread was perfect for what I needed it for ## Frequently Bought Together - Kasteco 2 Pack Black 8mm(M8) x 40mm Thread Replacement Star Hand Knob Tightening Screw - BSWAN 4 Pack M8 x 25mmThread Replacement Star Hand Knob Tightening Screw for Umbrella Base Replacement (4 Pack) - LifCratms 6 Pieces M6 x 40mm Thread Star Knobs, Plastic Hex Shaped Clamping Knob Handle Hand Tightening Screw Knob for Umbrella Base Replacement --- ## 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.tn/products/72755942-2-pack-m8-x-40mm-5-16-x-1-5](https://www.desertcart.tn/products/72755942-2-pack-m8-x-40mm-5-16-x-1-5) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-04-24*