--- product_id: 104206288 title: "M4 (4mm x 20mm) Flat Repair Washer (Large OD) - Stainless Steel (A2) (Pack of 20)" brand: "singularity supplies" price: "R324" currency: ZAR in_stock: true category: "Singularity Supplies" url: https://www.desertcart.co.za/products/104206288-m4-4mm-x-20mm-flat-repair-washer-large-od-stainless store_origin: ZA region: South Africa --- # 20mm large outer diameter M4 precision fit A2 stainless steel durability M4 (4mm x 20mm) Flat Repair Washer (Large OD) - Stainless Steel (A2) (Pack of 20) **Brand:** singularity supplies **Price:** R324 **Availability:** ✅ In Stock ## Summary > 🔧 Elevate your fastening game with precision and polish! ## Quick Answers - **What is this?** M4 (4mm x 20mm) Flat Repair Washer (Large OD) - Stainless Steel (A2) (Pack of 20) by singularity supplies - **How much does it cost?** R324 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/104206288-m4-4mm-x-20mm-flat-repair-washer-large-od-stainless) ## Best For - singularity supplies enthusiasts ## Why This Product - Trusted singularity supplies brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision M4 Fit:** Engineered for exact metric compatibility with M4 bolts, ensuring seamless assembly every time. - • **Large 20mm Outer Diameter:** Optimized to distribute load evenly on thin sheet metals, preventing damage and enhancing stability. - • **ISO 965 Standard Tolerance:** Manufactured to strict international standards for consistent quality and reliable performance. - • **Premium A2 Stainless Steel:** Corrosion-resistant polished finish that stands up to wear, rust, and the test of time. - • **Pack of 20 for Bulk Projects:** Ideal for professionals and DIYers alike, providing ample supply for multiple repairs or builds. ## Overview The M4 (4mm x 20mm) Flat Repair Washer by Singularity Supplies is a pack of 20 high-quality, polished A2 stainless steel washers designed with a large outer diameter to evenly spread load on thin materials. Engineered to ISO 965 standards, these washers offer corrosion resistance and precise metric compatibility, making them a reliable choice for professional-grade repairs and projects. ## Description Free delivery and returns on all eligible orders. Shop M4 (4mm x 20mm) Flat Repair Washer (Large OD) - Stainless Steel (A2) (Pack of 20). ## Features - Measurement: Metric - Plating: N/A - Tolerance: ISO 965 Standard ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07N4466Y2 | | Best Sellers Rank | 41,616 in DIY & Tools ( See Top 100 in DIY & Tools ) 278 in Washers | | Brand Name | Singularity Supplies | | Colour | Silver | | Compatible Groove Diameter | 4 Millimeters | | Customer Reviews | 4.6 out of 5 stars 1,807 Reviews | | Exterior Finish | Stainless Steel | | Exterior finish | Stainless Steel | | Fastener Size | M4 | | Fastener Type | Flat | | Fastener size | M4 | | Finish Types | Polished | | Item Diameter | 2 Centimetres | | Item Dimensions | 12 x 2 x 1 centimetres | | Item Thickness | 4 Millimetres | | Item Weight | 60 Grams | | Item thickness | 4 Millimetres | | Manufacturer | Singularity Supplies Ltd | | Manufacturer Part Number | HU-XI-100 | | Material | Stainless Steel | | Material Type | Stainless Steel | | Metal | Stainless Steel | | Number Of Items | 1 | | Number of Pieces | 20 | | Outside Diameter | 2 Centimetres | | Outside diameter | 2 Centimetres | | Screw Head Style | Flat | | Set Name | M4 x 20 (A2) Stainless Steel Flat Washing Machine, Polished, Silver | | Size | M4 x 20 (A2) | | Thread Size | M4 | | Unit Count | 20 count | | Washer Compatibility | metric bolts | | Washer Type | Flat | | Washer type | Flat | ## Product Details - **Exterior finish:** Stainless Steel - **Fastener size:** M4 - **Material:** Stainless Steel - **Outside diameter:** 2 Centimetres - **Washer type:** Flat ## Images ![M4 (4mm x 20mm) Flat Repair Washer (Large OD) - Stainless Steel (A2) (Pack of 20) - Image 1](https://m.media-amazon.com/images/I/71TKW6-mhhL.jpg) ![M4 (4mm x 20mm) Flat Repair Washer (Large OD) - Stainless Steel (A2) (Pack of 20) - Image 2](https://m.media-amazon.com/images/I/61Nr8QvcWcL.jpg) ![M4 (4mm x 20mm) Flat Repair Washer (Large OD) - Stainless Steel (A2) (Pack of 20) - Image 3](https://m.media-amazon.com/images/I/81LZj0nI+WL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - M4 (4mm x 20mm) Flat Repair Washer (Large OD) - Stainless Steel (A2) (Pack of 20) - M4 (4mm x 40mm) Phillips Pan Head Machine Screws - Steel (Pack of 20) DIN 7985 - M4 Washers, M4 x 9mm Metal Flat Penny Washers Thickness 0.8mm-A2 304 Stainless Steel Washers (50 Pack), AMLOOPH Large OD Plain Wide Metal Washers, Round Flat Spacer Repair Washer For Screws 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.co.za/products/104206288-m4-4mm-x-20mm-flat-repair-washer-large-od-stainless](https://www.desertcart.co.za/products/104206288-m4-4mm-x-20mm-flat-repair-washer-large-od-stainless) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-23*