--- title: "Robust Fish Eye Washer with Heat Treatment Process for Maximum Durability" description: "Robust Fish Eye Washer with Heat Treatment Process for Maximum Durability — Spring & Split Lock Washers. MOQ 2,000 pieces, US$0.0756 – 91.32." url: https://engineeringhardware.com/product/robust-fish-eye-washer-with-heat-treatment-process-for-maximum-durability/ source: Engineering Hardware & Fasteners --- # Robust Fish Eye Washer with Heat Treatment Process for Maximum Durability [![Robust Fish Eye Washer with Heat Treatment Process for Maximum Durability](https://img.engineeringhardware.com/Robust-Fish-Eye-Washer-with-Heat-Treatment-Process-for-Maximum-Durability.webp)](https://img.engineeringhardware.com/Robust-Fish-Eye-Washer-with-Heat-Treatment-Process-for-Maximum-Durability.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/robust-fish-eye-washer-with-heat-treatment-process-for-maximum-durability.md) Model no. **Eye Washer** US$0.0756 – 91.32 / piece MOQ 2,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Finish:** Polishing - **Color:** Plain - **Package Size:** 14.50cm * 12.50cm * 8.50cm - **Size:** M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27 - **Grade:** 304, 316 Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Robust%20Fish%20Eye%20Washer%20with%20Heat%20Treatment%20Process%20for%20Maximum%20Durability%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Frobust-fish-eye-washer-with-heat-treatment-process-for-maximum-durability%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 | Type | Spring Washer | | --- | --- | | Material | Stainless Steel | | Spring Washer Type | Standard | | Model NO. | Eye Washer | | Finish | Polishing | | Service | OEM/ODM | | Color | Plain | | Usage | Heavy Duty | | Transport Package | Carton | | Specification | Customized | | Origin | China | | HS Code | 3926901000 | | Package Size | 14.50cm * 12.50cm * 8.50cm | | Package Gross Weight | 5.000kg | | M6 | d1=6.4 mm, d2=16 mm, h=2.5 mm | | M12 | d1=13 mm, d2=24 mm, h=2.5 mm | | Thickness | 0.8 – 12 mm | | Inner Dia. (d1) | 3 – 80 mm | | Outer Dia. (d2) | 6 – 110 mm | | M5 | d1=5.3 mm, d2=10 mm, h=1 mm | | M8 | d1=8.4 mm, d2=16 mm, h=1.6 mm | | M16 | d1=17 mm, d2=30 mm, h=3 mm | | M20 | d1=21 mm, d2=37 mm, h=3 mm | | M30 | d1=31 mm, d2=56 mm, h=4 mm | | M6 (Regular) | d1=6.65-6.87 mm, d2=18.37-18.8 mm, h=1.2-1.75 mm | | M8 (Regular) | d1=8.9-9.12 mm, d2=18.37-18.8 mm, h=1.6-2.3 mm | | M10 (Regular) | d1=10.85-11.12 mm, d2=19.48-20 mm, h=1.6-2.3 mm | | Size | M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27 | | Grade | 304, 316 | | Category | [Spring & Split Lock Washers](https://engineeringhardware.com/fastener-products/washers/spring-split-lock-washers/) | ## Technical parameters | DIN 125(Form A) | Steel, Stainless steel (A2, A4) | M2 – M36 | M6: d1=6.4 mm, d2=16 mm, h=2.5 mmM12: d1=13 mm, d2=24 mm, h=2.5 mm | | --- | --- | --- | --- | | DIN 1440 | Steel, Stainless steel (A2, A4) | M3 – M80 | Thickness: 0.8 – 12 mmInner Dia. (d1): 3 – 80 mmOuter Dia. (d2): 6 – 110 mm | | ISO 7089 | Steel, Stainless steel | M1.6 – M64 | M5: d1=5.3 mm, d2=10 mm, h=1 mmM6: d1=6.4 mm, d2=12 mm, h=1.6 mmM8: d1=8.4 mm, d2=16 mm, h=1.6 mmM12: d1=13 mm, d2=24 mm, h=2.5 mmM16: d1=17 mm, d2=30 mm, h=3 mmM20: d1=21 mm, d2=37 mm, h=3 mmM30: d1=31 mm, d2=56 mm, h=4 mm | | GB/T 97.1 | Steel, Stainless steel (A2) | Φ1.6 – Φ64 mm | Equivalent to ISO 7089 | | ASME B18.22.1(Metric) | Steel, Stainless steel | M1.6 – M10+ | M6 (Regular): d1=6.65-6.87 mm, d2=18.37-18.8 mm, h=1.2-1.75 mmM8 (Regular): d1=8.9-9.12 mm, d2=18.37-18.8 mm, h=1.6-2.3 mmM10 (Regular): d1=10.85-11.12 mm, d2=19.48-20 mm, h=1.6-2.3 mm | | ASME B18.22.1(Inch) | Steel, Stainless steel | #4 – 1″+ | #4: ID=0.125″ (1/8″), OD=0.4375″ (7/16″)#10: ID=0.145″, OD=0.3125″ (5/16″)1/2″: ID=0.531″ (17/32″), Thk=0.063″5/8″: ID=0.656″ (21/32″), Thk=0.063″ | | Combination Washer Structure | A Type | | --- | --- | | Combination Washer Packaging | All Inclusive | | Spring Washer Type | Standard | | Lead Time | Around 25 Days | | Surface Treatment | Passivated, Plain, Zinc Plated, Anodizing, HDG | | Suitable for | Industry, Construction, Railway | | Payment Term | T/T, L/C, DP,and so on | | Transport Package | 25 Kg Per Carton, 36 Cartons Per Pallet | | Processing Method | Punching and Shearing Mold | | Process Combination | Single-Process Mold | | Mold Cavity Technology | CNC Milling | | Milling Speed | High Speed | | Hardness | HRC62-63 | | Punch Tolerance | 0, +0.01mm | | Origin | China | ## Description Robust Fish Eye Washer with Heat Treatment Process for Maximum Durability is part of our spring & split lock washers range (Washers). ### Key details - **Type:** Spring Washer - **Material:** Stainless Steel - **Grade:** 304, 316 - **Size:** M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27 - **Finish:** Polishing - **Spring Washer Type:** Standard - **Service:** OEM/ODM - **Color:** Plain Available configurations include material, finish, color, package size and size. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 2,000 pieces at US$0.0756 – 91.32 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 Robust Fish Eye Washer with Heat Treatment Process for Maximum Durability? The listed minimum order is 2,000 pieces, at US$0.0756 – 91.32 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 Robust Fish Eye Washer with Heat Treatment Process for Maximum Durability? Type: Spring Washer; Material: Stainless Steel; Grade: 304, 316; Size: M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27; Finish: Polishing; Spring Washer Type: Standard. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, finish, color, package size and size. 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 & 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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/) [![Made in China Stainless Steel Copper Shim Washers](https://img.engineeringhardware.com/Made-in-China-Stainless-Steel-Copper-Shim-Washers.webp)](https://engineeringhardware.com/product/made-in-china-stainless-steel-copper-shim-washers/) Spring & Split Lock Washers ### [Made in China Stainless Steel Copper Shim Washers](https://engineeringhardware.com/product/made-in-china-stainless-steel-copper-shim-washers/) Spring Washer · Carbon Steel **US$0.12 – 1.20**MOQ 1,000 pieces [![Factory Price DIN 127 Zinc Plated Carbon Steel Split Spring Lock 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