--- title: "Wholesale Corrosion Resistant Concave Convex Fish Eye Cup Countersunk Washer" description: "Wholesale Corrosion Resistant Concave Convex Fish Eye Cup Countersunk Washer — Countersunk & Flat-Head Machine Screws. MOQ 5,000 pieces, US$0.11." url: https://engineeringhardware.com/product/wholesale-corrosion-resistant-concave-convex-fish-eye-cup-countersunk-washer/ source: Engineering Hardware & Fasteners --- # Wholesale Corrosion Resistant Concave Convex Fish Eye Cup Countersunk Washer [![Wholesale Corrosion Resistant Concave Convex Fish Eye Cup Countersunk Washer](https://img.engineeringhardware.com/Wholesale-Corrosion-Resistant-Concave-Convex-Fish-Eye-Cup-Countersunk-Washer.webp)](https://img.engineeringhardware.com/Wholesale-Corrosion-Resistant-Concave-Convex-Fish-Eye-Cup-Countersunk-Washer.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Screws › Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/wholesale-corrosion-resistant-concave-convex-fish-eye-cup-countersunk-washer.md) Model no. **SKS-EC-67** US$0.11 / piece MOQ 5,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Surface Processing:** White Zinc .Yellow Zinc. HDG - **Customized:** Customized - **Color:** We Can Provide Customized Services According to Yo - **Other Head Type:** Square Type, T Type, Wing Type, U Type, Round Type Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Wholesale%20Corrosion%20Resistant%20Concave%20Convex%20Fish%20Eye%20Cup%20Countersunk%20Washer%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fwholesale-corrosion-resistant-concave-convex-fish-eye-cup-countersunk-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. | SKS-EC-67 | | --- | --- | | Material | Stainless Steel | | Mold | Stamping | | Surface Processing | White Zinc .Yellow Zinc. HDG | | Process | Stamping | | Customized | Customized | | Color | We Can Provide Customized Services According to Yo | | Other Head Type | Square Type, T Type, Wing Type, U Type, Round Type | | Service | OEM or ODM | | Application | Industry | | Transport Package | Wooden Case | | Specification | All size | | Origin | China | | Production Capacity | 1000tons/Month | | Customization | Available | | Type | Hot Stamping | | Processing Type | Shaping Metal | | Aluminum | Clear Anodized Color Anodized Sandblast Anodized,ChemicalFilm, Brushing, Polishing,Chroming | | Stainless Steel | Polishing, Passivating, | | Steel | Zinc plating, Oxide black, Nickel Plating, Chrome Plating, Carburized,Heat Treatment. Powder Coated | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Materials | Aluminum, Stainless steel & Steel, Brass,Bronze,Titanium,etc | | | | --- | --- | --- | --- | | Processing | CNC turning, CNC milling, CNC turn-milled, Laser cutting | | | | Surface Treatment | Aluminum:Clear Anodized Color Anodized Sandblast Anodized,ChemicalFilm, Brushing, Polishing,Chroming | Stainless Steel:Polishing, Passivating, Sandblasting,Laser engraving | Steel: Zinc plating, Oxide black, Nickel Plating, Chrome Plating, Carburized,Heat Treatment. Powder Coated | ## Description Wholesale Corrosion Resistant Concave Convex Fish Eye Cup Countersunk Washer is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Hot Stamping - **Material:** Stainless Steel - **Application:** Industry - **Mold:** Stamping - **Surface Processing:** White Zinc .Yellow Zinc. HDG - **Process:** Stamping - **Color:** We Can Provide Customized Services According to Yo - **Other Head Type:** Square Type, T Type, Wing Type, U Type, Round Type Available configurations include material, surface processing, customized, color and other head type. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 5,000 pieces at US$0.11 per piece. 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 Wholesale Corrosion Resistant Concave Convex Fish Eye Cup Countersunk Washer? The listed minimum order is 5,000 pieces, at US$0.11 per piece. 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 Wholesale Corrosion Resistant Concave Convex Fish Eye Cup Countersunk Washer? Type: Hot Stamping; Material: Stainless Steel; Application: Industry; Mold: Stamping; Surface Processing: White Zinc .Yellow Zinc. HDG; Process: Stamping. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, surface processing, customized, color and other head type. 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 countersunk & flat-head machine screws are available? The Countersunk & Flat-Head Machine Screws category lists 2,424 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) 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 Countersunk & Flat-Head Machine Screws →](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) [![Factory Production Customized Molding Sampling CNC Flat Head Socket 1/2 3/8 1-5/8 Brass Screw Bronze Screw](https://img.engineeringhardware.com/Factory-Production-Customized-Molding-Sampling-CNC-Flat-Head-Socket-1-2-3-8-1-5-8-Brass-Screw-Bronze-Screw.webp)](https://engineeringhardware.com/product/factory-production-customized-molding-sampling-cnc-flat-head-socket-1-2-3-8-1-5-8/) Countersunk & Flat-Head Machine Screws ### [Factory Production Customized Molding Sampling CNC Flat Head Socket 1/2 3/8 1-5/8 Brass Screw Bronze Screw](https://engineeringhardware.com/product/factory-production-customized-molding-sampling-cnc-flat-head-socket-1-2-3-8-1-5-8/) Flat Head · DIN **US$0.012 – 0.06**MOQ 1,000 pieces [![M1.4-M8 3-80mm Plum Blossom 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Countersunk Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.06 – 0.17**MOQ 1,000 pieces [![Yjt 4024 (WN 5411) Steel with Black Oxide Plated Large Flat Head Screws](https://img.engineeringhardware.com/Yjt-4024-WN-5411-Steel-with-Black-Oxide-Plated-Large-Flat-Head-Screws.webp)](https://engineeringhardware.com/product/yjt-4024-wn-5411-steel-with-black-oxide-plated-large-flat-head-screws/) Countersunk & Flat-Head Machine Screws ### [Yjt 4024 (WN 5411) Steel with Black Oxide Plated Large Flat Head Screws](https://engineeringhardware.com/product/yjt-4024-wn-5411-steel-with-black-oxide-plated-large-flat-head-screws/) Flat · DIN, GB, ANSI, BSW, JIS, GOST **US$0.22**MOQ 100 pieces **US$0.11**MOQ 5,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Wholesale%20Corrosion%20Resistant%20Concave%20Convex%20Fish%20Eye%20Cup%20Countersunk%20Washer%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fwholesale-corrosion-resistant-concave-convex-fish-eye-cup-countersunk-washer%2F)