--- product_id: 60927986 title: "NEIKO 50400A Stainless Steel Lock and Flat Washer Assortment | 350 Piece Set | 12 Different Sizes in Spring Lock and Flat Design | Prevent Loose Fasteners" brand: "neiko" price: "S$16" currency: SGD in_stock: true category: "Neiko" url: https://www.desertcart.sg/products/60927986-neiko-50400a-stainless-steel-lock-and-flat-washer-assortment-350 store_origin: SG region: Singapore --- # 350-piece comprehensive set 12 versatile sizes included Galvanized stainless steel durability NEIKO 50400A Stainless Steel Lock and Flat Washer Assortment | 350 Piece Set | 12 Different Sizes in Spring Lock and Flat Design | Prevent Loose Fasteners **Brand:** neiko **Price:** S$16 **Availability:** ✅ In Stock ## Summary > 🔧 Lock it down with NEIKO – the ultimate fastener’s best friend! ## Quick Answers - **What is this?** NEIKO 50400A Stainless Steel Lock and Flat Washer Assortment | 350 Piece Set | 12 Different Sizes in Spring Lock and Flat Design | Prevent Loose Fasteners by neiko - **How much does it cost?** S$16 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/60927986-neiko-50400a-stainless-steel-lock-and-flat-washer-assortment-350) ## Best For - neiko enthusiasts ## Why This Product - Trusted neiko brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Size Range:** 12 lock and flat washer sizes to fit every bolt and screw in your toolkit. - • **Premium Stainless Steel:** Galvanized finish resists corrosion for reliable, long-term performance. - • **Organized & Ready-to-Use:** Sturdy compartmentalized case keeps your washers sorted and accessible for any project. - • **Complete Fastener Security:** 350 precision washers to prevent loosening and ensure lasting hold. - • **Optimized Load Distribution:** Flat and lock designs evenly spread pressure to protect materials and fasteners. ## Overview The NEIKO 50400A set offers 350 galvanized stainless steel lock and flat washers in 12 sizes, engineered to prevent fastener loosening and distribute load evenly. Perfect for automotive and home projects, this durable assortment comes neatly organized in a sturdy storage box, making it an essential upgrade for professionals and DIYers seeking reliability and convenience. ## Description Set comes with the following quantity of sizes: (50) #6 Lock Washer, (40) #8 Lock Washer, (30) #10 Lock Washer, (25) 1/4" Lock Washer, (15) 5/16" Lock Washer, (15) 3/8" Lock Washer, (50) #6 Flat Washer, (40) #8 Flat Washer, (30) #10 Flat Washer, (25) 1/4" Flat Washer, (15) 5/16" Flat Washer, (15) 3/8" Flat Washer ## Features - GALVANIZED STAINLESS STEEL: These lock and flat washers provide excellent protection and security for nuts and bolts. They are made with galvanized stainless steel for long-term use and outstanding durability. - VERSATILE & COMPATIBLE: These assorted washers come in multiple sizes to fit all your screws, nuts, and bolts. Each washer features a solid bearing surface to prevent the nut or bolt head from tearing through the material. - OPTIMAL SURFACE AREA: Each stainless-steel flat or lock washer easily deflects the screw or bolt load, spreading the weight evenly for a secure and sure fit. These washers for screws and bolts are ideal for use at home or in the workshop. - THE RIGHT SIZE: This set of washers contains a wide variety of sizes. It includes lock washers in sizes #6, #8, #10, 1/4", 5/16", and 3/8" and flat washers in sizes #6, #8, #10, 1/4", 5/16", and 3/8". - CONVENIENT STORAGE: Keep your washers ready for your next home or automotive project. This 350-piece set comes in a convenient, sturdy plastic box with divided compartments for easy storage and an inside lid display for easy organization. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B078MY92LL | | Best Sellers Rank | #1,985 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Hardware Pins | | Brand | NEIKO | | Color | Silver | | Customer Reviews | 4.6 4.6 out of 5 stars (2,241) | | Exterior Finish | Stainless Steel | | Fastener Type | Flat Washer | | Finish Types | Silver | | Global Trade Identification Number | 00816914021426 | | Included Components | Split locks, Flat Washers | | Item Diameter | 0.38 inches | | Item Dimensions | 8.1 x 4.15 x 1.15 inches | | Item Thickness | 0.05 inches | | Item Type Name | Lock and Flat Washer Assortment | | Item Weight | 11.84 ounces | | Manufacturer | Neiko | | Material Type | Stainless Steel | | Metal Type | Stainless Steel | | Model | 50400A | | Number Of Items | 1 | | Number of Pieces | 350 | | Outside Diameter | 0.38 inches | | Part Number | 50400A | | Screw Head Style | Flat | | Set Name | 350 Piece Set | | Size Name | Lock and Flat Washer, 350 Piece | | Thread Size | #6, #8, #10, 1/4", 5/16", 3/8" | | UPC | 816914021426 | | Unit Count | 1 Count | | Washer Application | automotive, home | | Washer Compatibility | inch bolts, machine screws | | Washer Type | Flat | ## Product Details - **Exterior Finish:** Stainless Steel - **Item Thickness:** 0.05 inches - **Material:** Stainless Steel - **Outside Diameter:** 0.38 inches - **Washer Type:** Flat ## Images ![NEIKO 50400A Stainless Steel Lock and Flat Washer Assortment | 350 Piece Set | 12 Different Sizes in Spring Lock and Flat Design | Prevent Loose Fasteners - Image 1](https://m.media-amazon.com/images/I/81R7pckVCEL.jpg) ## Available Options This product comes in different **Pattern, Style** options. ## Questions & Answers **Q: Stainless steel galvanized?** A: There are several families of stainless steels with different physical properties. The magnetic properties of stainless steel are very dependent on the elements added into the alloy. A basic stainless steel has a ‘ferritic’ structure and is magnetic, formed from the addition of chromium – it can be hardened through the addition of carbon, making it ‘martensitic’. However, the most common stainless steels are ‘austenitic’ – these have a higher chromium content and nickel is also added. It is the nickel which modifies the physical structure of the steel and makes it theoretically non-magnetic. **Q: Is this item returnable?** A: Yes **Q: Why is amazon promoting a product with false advertising these are not stainless steel ???** A: It is a cheap grade of stainless. But they are also very inexpensive. "You get what you pay for." is a mantra that will (most times in life) be true. Amazon has 14 billion items available through their warehouses, and millions of sellers. You cant honestly expect them to be on top of every one of them. If it's cheap, expect it to be cheap. :-) **Q: Description says "galvanized stainless steel". nobody galvanizes stainless steel. it's not necessary. are these simply galvanized ordinary steel?** A: It doesn't say what grade stainless steel some heat treatable stainless can rust. If you look for 302 or 316 stainless it wouldn't rust but may not be as strong. ## Frequently Bought Together - NEIKO 50400A Stainless Steel Lock and Flat Washer Assortment | 350 Piece Set | 12 Different Sizes in Spring Lock and Flat Design | Prevent Loose Fasteners - WEGOUP 900 Pcs Stainless Steel Flat Washers for Screws, 304 Stainless Steel, Assorted Sizes (M2 M2.5 M3 M4 M5 M6 M8 M10 M12) for Industrial Use, Washers for Bolts --- ## 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/60927986-neiko-50400a-stainless-steel-lock-and-flat-washer-assortment-350](https://www.desertcart.sg/products/60927986-neiko-50400a-stainless-steel-lock-and-flat-washer-assortment-350) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-20*