--- title: "3mm Copper Flat Plain Washer Metric Solid Copper Sealing Washer" description: "3mm Copper Flat Plain Washer Metric Solid Copper Sealing Washer — Spring & Split Lock Washers. Material: Stainless Steel. MOQ 1 kilogram, US$0.024 – 7.80." url: https://engineeringhardware.com/product/3mm-copper-flat-plain-washer-metric-solid-copper-sealing-washer/ source: Engineering Hardware & Fasteners --- # 3mm Copper Flat Plain Washer Metric Solid Copper Sealing Washer [![3mm Copper Flat Plain Washer Metric Solid Copper Sealing Washer](https://img.engineeringhardware.com/3mm-Copper-Flat-Plain-Washer-Metric-Solid-Copper-Sealing-Washer.webp)](https://img.engineeringhardware.com/3mm-Copper-Flat-Plain-Washer-Metric-Solid-Copper-Sealing-Washer.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Washers › Spring & Split Lock Washers](https://engineeringhardware.com/fastener-products/washers/spring-split-lock-washers/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/3mm-copper-flat-plain-washer-metric-solid-copper-sealing-washer.md) Model no. **XINLIHUI** US$0.024 – 7.80 / kilogram MOQ 1 kilogram · Final price confirmed in your quote - **Surface Treatment:** Polishing,,Nickel-Plated - **Material of Knife:** Stainless Steel, Aluminum, Carbon Steel - **Material:** Stainless Steel - **Standard:** GB699-1999/Nonstandard model Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%203mm%20Copper%20Flat%20Plain%20Washer%20Metric%20Solid%20Copper%20Sealing%20Washer%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2F3mm-copper-flat-plain-washer-metric-solid-copper-sealing-washer%2F) Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order. ## Specifications | Model NO. | XINLIHUI | | --- | --- | | Combination Washer Structure | A Type | | Combination Washer Packaging | All Inclusive | | Spring Washer Type | Standard | | Machine Item | Metric Solid Copper Sealing Washer | | Certificate | Ce SGS ISO9001 | | Package | Carton | | Price | More Competitive Price Than Other Competitors | | Surface Treatment | Polishing,,Nickel-Plated | | Delivery Time | Quick Delivery in 7 Days | | Application / Machine | Heavy Industry, Retail Industry, General Industry | | After-Sales Service | 24 Hours Technical Support by Email, Call, Video | | Working Experience | Twenty Years' Experience | | Material of Knife | Stainless Steel, Aluminum, Carbon Steel | | Transport Package | Standard Package, Be Made According Cutomer Need | | Specification | different size can be choose | | Origin | Qingdao City | | HS Code | 84659100 | | Production Capacity | 1000000 Ton/Tons Per Week | | Customization | Available | | Type | Spring Washer | | Material | Stainless Steel | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Warranty | We confirm that the products we provided will satisfied your requuest one year warranty | | Sample | Samples for standard bolts are all in free OEM is available | | Detail | Product Name | | Standard | GB699-1999/Nonstandard model | | Remark | 1. Our factory is mainly wholesale; | | Company Information | Qingdao Xinlihui Machinery Co., Ltd is one of the large-scale woodworking machinery manufacturer in China. The company is located in Wangtai town. | | Category | [Spring & Split Lock Washers](https://engineeringhardware.com/fastener-products/washers/spring-split-lock-washers/) | ## Technical parameters | Product Name | Flat Washers | | --- | --- | | Standard: | GB699-1999/Nonstandard model | | Color | Plain, black, Zinc | | specification | M6-M36 | | Grade | 4.8, 6.8, 8.0 | | Material | CARBON STEEL, STAINLESS STEEL, Q235 | | Package | Standard Export Cartons & bags on pallets Or Customized | | size | Various,according to customer's requirement | | MOQ | Negotiable | | Sample Service | Samples for standard parts or stock parts are free. There will be charges for customized samples and we will return the sample cost if your order quantity is good. | ## Description 3mm Copper Flat Plain Washer Metric Solid Copper Sealing Washer is part of our spring & split lock washers range (Washers). ### Key details - **Type:** Spring Washer - **Standard:** GB699-1999/Nonstandard model - **Material:** Stainless Steel - **Surface Treatment:** Polishing,,Nickel-Plated - **Combination Washer Structure:** A Type - **Combination Washer Packaging:** All Inclusive - **Spring Washer Type:** Standard - **Machine Item:** Metric Solid Copper Sealing Washer Available configurations include surface treatment, material of knife, material and standard. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1 kilogram at US$0.024 – 7.80 per kilogram. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you. ## Frequently asked questions ### What is the minimum order quantity (MOQ) for 3mm Copper Flat Plain Washer Metric Solid Copper Sealing Washer? The listed minimum order is 1 kilogram, at US$0.024 – 7.80 per kilogram. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### What are the main specifications of 3mm Copper Flat Plain Washer Metric Solid Copper Sealing Washer? Type: Spring Washer; Standard: GB699-1999/Nonstandard model; Material: Stainless Steel; Surface Treatment: Polishing,,Nickel-Plated; Combination Washer Structure: A Type; Combination Washer Packaging: All Inclusive. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include surface treatment, material of knife, material and standard. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing. ### What is the lead time and how is it shipped? Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment. ### Which other spring & split lock washers are available? The Spring & Split Lock Washers category lists 1,593 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/washers/spring-split-lock-washers/](https://engineeringhardware.com/fastener-products/washers/spring-split-lock-washers/) How we work ## Specified, checked and shipped by Engineering Hardware & Fasteners Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing. - DIN, ISO, ASTM, ANSI, JIS and GB standard parts - Non-standard parts made to your drawing - Dimensions, thread gauges and plating checked before packing - Export cartons and pallets, consolidated mixed orders - Samples available for approval before mass production [![Production floor](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor-1024x683.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-01-production-floor.webp) Production floor [![Inspection bench](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-02-inspection-bench.webp) Inspection bench [![Sorting & packing](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-03-sorting-and-packing.webp) Sorting & packing [![Parts warehouse](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/factory-04-parts-warehouse.webp) Parts warehouse [![Sample review](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-02-office-sample-review.webp) Sample review [![Sales office](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office-768x512.webp)](https://engineeringhardware.com/wp-content/uploads/2026/11/office-01-daily-sales-office.webp) Sales office [More about us →](https://engineeringhardware.com/about/) · [Request a sample or custom quote →](https://engineeringhardware.com/contact/) ## Request a quote for this product ## Related products [All Spring & Split Lock Washers →](https://engineeringhardware.com/fastener-products/washers/spring-split-lock-washers/) [![M8 Black Split Lock Washer, 18-8 (304) Stainless Steel Black Coating Spring Lock Washer Elastic Gasket](https://img.engineeringhardware.com/M8-Black-Split-Lock-Washer-18-8-304-Stainless-Steel-Black-Coating-Spring-Lock-Washer-Elastic-Gasket.webp)](https://engineeringhardware.com/product/m8-black-split-lock-washer-18-8-304-stainless-steel-black-coating-spring-lock-washer/) Spring & Split Lock Washers ### [M8 Black Split Lock Washer, 18-8 (304) Stainless Steel Black Coating Spring Lock Washer Elastic Gasket](https://engineeringhardware.com/product/m8-black-split-lock-washer-18-8-304-stainless-steel-black-coating-spring-lock-washer/) Spring Washer · Stainless Steel **US$0.0011 – 0.0012**MOQ 1,000 pieces [![DIN 6798 Internal Serrated Lock Washer Ss 304 316 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