--- product_id: 15218159 title: "uxcell M3 x 40mm Alloy Steel Hex Bolt Socket Head Cap Screws Black 50 Pcs" brand: "uxcell" price: "£10.22" currency: GBP in_stock: false reviews_count: 13 category: "Uxcell" url: https://www.desertcart.co.uk/products/15218159-uxcell-m3-x-40mm-alloy-steel-hex-bolt-socket-head store_origin: GB region: United Kingdom --- # M3 x 40mm - precise sizing Black Oxidation Finish - sleek corrosion resistance 12.9 Grade Alloy Steel - ultra durable uxcell M3 x 40mm Alloy Steel Hex Bolt Socket Head Cap Screws Black 50 Pcs **Brand:** uxcell **Price:** £10.22 **Availability:** ❌ Out of Stock ## Summary > 🛠️ Elevate your projects with bolts that mean business! ## Quick Answers - **What is this?** uxcell M3 x 40mm Alloy Steel Hex Bolt Socket Head Cap Screws Black 50 Pcs by uxcell - **How much does it cost?** £10.22 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/15218159-uxcell-m3-x-40mm-alloy-steel-hex-bolt-socket-head) ## Best For - uxcell enthusiasts ## Why This Product - Trusted uxcell brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Makers:** Proven reliability even in high-stress applications like firearm repairs—built to last. - • **Sleek Black Finish:** Black oxidation coating not only looks professional but protects against rust and wear. - • **Bulk Pack Advantage:** 50 screws per pack means you’re always ready for any project or emergency fix. - • **Precision Engineering:** Exact M3 x 40mm sizing with 0.5mm thread pitch ensures flawless fit and performance. - • **Industrial-Grade Strength:** Crafted from premium 12.9 grade alloy steel for maximum durability under pressure. ## Overview The uxcell M3 x 40mm Alloy Steel Hex Bolt Socket Head Cap Screws come in a pack of 50, made from high-strength 12.9 grade alloy steel with a sleek black oxidation finish. Designed for precision and durability, these fully threaded M3 bolts feature a 0.5mm thread pitch and a hex socket head for secure fastening in industrial, DIY, and specialized applications. ## Description desertcart.com: uxcell M3 x 40mm Alloy Steel Hex Bolt Socket Head Cap Screws Black 50 Pcs : Industrial & Scientific Review: Good Quality - ⭐️⭐️⭐️⭐️⭐️ Seller had Super Fast Shipping Very Nice item in Very Good Condition with a High Quality Appearance Very Good Value for the Price ⭐️⭐️⭐️⭐️⭐️ Review: So.... i bought them for a out of the ordinary "project" - i have a Walther G22 in which parts for it just dont exist, and i dont feel like messing with sending it off. so i got some bad ammo which ended up blowing the charging handle off the rifle and ended up not repairable the rifle itself was fine. i bought these along with a set of nuts to go with them and did some rigging to "make" a new charging handle (in which now i have 50 replacements for). so far after around 500 rounds of .22LR ammo the first is still living good. so if these can take the forces of a rifle bolt moving around i'd come to think these would be good in the least for other maybe more relevant uses. ## Features - Product Name : Socket Head Cup Screws;Material : 12.9 Grade Alloy Steel;Color : Black - Screw Standard : M3 x 40mm;Thread Dia. : 3mm - Thread Pitch : 0.5mm;Thread Length : 40mm / 1.6" - Head Diameter : 5.5mm;Head Height : 3mm - Weight : 100g;Package Content : 50(+/-2%) xSocket Head Cup Screws ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00W97R5KU | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #207,823 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,402 in Socket Head Screws | | Brand | uxcell | | Color | Black | | Compatible groove diameter | 3 Millimeters | | Customer Reviews | 4.6 4.6 out of 5 stars (136) | | Cutting Diameter | 3 Millimeters | | Date First Available | April 17, 2015 | | Exterior Finish | Alloy Steel | | Fastener Size | M3 | | Fastener Type | Hexagon Bolt | | Finish | Black Oxidation | | Head Style | Hex | | Head Type | Socket | | Item Diameter | 3 Millimeters | | Item Package Quantity | 1 | | Item Weight | 0.01 ounces | | Item model number | a15030300ux0019 | | Manufacturer | uxcell | | Material | Alloy Steel | | Measurement System | Imperial, Metric | | Metal Type | Alloy Steel | | Number of Pieces | 50 | | Part Number | a15030300ux0019 | | Point Style | Round Point | | Set Name | 50 | | Set Screw Thread Type | Metric | | Shape | Cylindrical With Hexagonal Head | | Size | 3 inches | | Thread Class | 2B | | Thread Coverage | Fully Threaded | | Thread Size | M3 | | Thread Style | Right Hand | | Thread Type | Metric | ## Product Details - **Exterior Finish:** Alloy Steel - **Head Style:** Hex - **Item dimensions L x W x H:** 1.97 x 1.57 x 0.79 inches - **Material:** Alloy Steel - **Thread Size:** M3 ## Images ![uxcell M3 x 40mm Alloy Steel Hex Bolt Socket Head Cap Screws Black 50 Pcs - Image 1](https://m.media-amazon.com/images/I/61qQ+3QCVyL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good Quality *by J***N on February 8, 2025* ⭐️⭐️⭐️⭐️⭐️ Seller had Super Fast Shipping Very Nice item in Very Good Condition with a High Quality Appearance Very Good Value for the Price ⭐️⭐️⭐️⭐️⭐️ ### ⭐⭐⭐⭐⭐ So.... i bought them for a out of the ordinary "project" *by C***S on September 6, 2018* i have a Walther G22 in which parts for it just dont exist, and i dont feel like messing with sending it off. so i got some bad ammo which ended up blowing the charging handle off the rifle and ended up not repairable the rifle itself was fine. i bought these along with a set of nuts to go with them and did some rigging to "make" a new charging handle (in which now i have 50 replacements for). so far after around 500 rounds of .22LR ammo the first is still living good. so if these can take the forces of a rifle bolt moving around i'd come to think these would be good in the least for other maybe more relevant uses. ### ⭐⭐⭐⭐⭐ They're bolts *by A***O on December 1, 2022* They're still holding the parts I bought them for together. ## Frequently Bought Together - uxcell M3 x 40mm Alloy Steel Hex Bolt Socket Head Cap Screws Black 50 Pcs - 100pcs M3 x 8mm 12.9 Grade Alloy Steel Hex Socket Head Cap Screws Bolts,Black Oxide Finish - uxcell a16033100ux0563 M3 Carbon Steel Grade 8 Hexagon Hex Nut Black Carbon Steel (Pack of 100) --- ## 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.co.uk/products/15218159-uxcell-m3-x-40mm-alloy-steel-hex-bolt-socket-head](https://www.desertcart.co.uk/products/15218159-uxcell-m3-x-40mm-alloy-steel-hex-bolt-socket-head) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-02*