--- title: "Custom Fastener Flat Plain Washer /Spring Washer /External Internal Lock/ Wave Washer/Aluminum Stainless Steel" description: "Custom Fastener Flat Plain Washer /Spring Washer /External Internal Lock/ Wave Washer/Al… — Button, Pan & Round-Head Screws. MOQ 1 piece, US$48.00 – 72.00." url: https://engineeringhardware.com/product/custom-fastener-flat-plain-washer-spring-washer-external-internal-lock-wave-washer/ source: Engineering Hardware & Fasteners --- # Custom Fastener Flat Plain Washer /Spring Washer /External Internal Lock/ Wave Washer/Aluminum Stainless Steel [![Custom Fastener Flat Plain Washer /Spring Washer /External Internal Lock/ Wave Washer/Aluminum Stainless Steel](https://img.engineeringhardware.com/Custom-Fastener-Flat-Plain-Washer-Spring-Washer-External-Internal-Lock-Wave-Washer-Aluminum-Stainless-Steel.webp)](https://img.engineeringhardware.com/Custom-Fastener-Flat-Plain-Washer-Spring-Washer-External-Internal-Lock-Wave-Washer-Aluminum-Stainless-Steel.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Screws › Button, Pan & Round-Head Screws](https://engineeringhardware.com/fastener-products/screws/button-pan-round-head-screws/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/custom-fastener-flat-plain-washer-spring-washer-external-internal-lock-wave-washer.md) Model no. **m3-m20** US$48.00 – 72.00 / piece MOQ 1 piece · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Round - **Standard:** DIN, GB, ANSI, BSW, JIS - **Grade:** 8.8 - **C. Raw material warehouse:** Our screws are made with first quality materials,all our suppliers carry out strict quality controls on the materials in order to get the best quality performance as required by our internal procedures. Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Custom%20Fastener%20Flat%20Plain%20Washer%20%2FSpring%20Washer%20%2FExternal%20Internal%20Lock%2F%20Wave%20Washer%2FAluminum%20Stainless%20Steel%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fcustom-fastener-flat-plain-washer-spring-washer-external-internal-lock-wave-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 | Customization | Available | | --- | --- | | Material | Stainless Steel | | Type | Pan Head | | Model NO. | m3-m20 | | Groove | Cross | | Connection | Common Bolt | | Head Style | Round | | Standard | DIN, GB, ANSI, BSW, JIS | | Grade | 8.8 | | Transport Package | Paper Box | | Specification | stainless steel | | Origin | Dongguan | | HS Code | 8207300090 | | Production Capacity | 1000PCE | | C. Raw material warehouse | Our screws are made with first quality materials,all our suppliers carry out strict quality controls on the materials in order to get the best quality performance as required by our internal procedures. | | ISO9001 | 2008 | | please don't hesitate to contact with me as below | Helen | | Category | [Button, Pan & Round-Head Screws](https://engineeringhardware.com/fastener-products/screws/button-pan-round-head-screws/) | ## Technical parameters | Raw Materials | 1.StainlessSteel:SS201,202,303,304,316,321,410,420,etc. | | --- | --- | | 2.Steel:C45(K1045),C46(K1046),C20,etc. | | | 3.Brass:C36000(C26800),C37700(HPb59),C3850(HPb58),C27200CuZn37),C28000(CuZn40),etc. | | | 4.Bronze:C51000,C52100,C54400,etc. | | | 5.Iron:1213,12L14,1215,etc. | | | 6.Aluminum:Al6061, Al6063,etc. | | | 7.Carbonsteel:C1006,C1010,C1018,C1022,C1035K, C1045,etc. | | | 8.Alloy steel:SCM435,10B21,etc. | | | Application | Electronic equipment,Machinery,Buildings,Sanitary fittings,Sports equipment,etc. | | Size scope | M3-M12 * 5-150mmL | | Standard | ISO,DIN,AS/NZS,GB,ANSI,BSW,DIN and special standard according to the drawing. | | Grade | Class 4.8, Class 6.8, Class 8.8, Class 10.9, Class 12.9,etc. | | Surface finishing | Plain,polishing,zinc plated, Ni-plated,Tin-plated,hot-dip galvanized,black anodize,black lacquer,copper red,Chromate,Chrome plated,etc. | | Heat treatment | Tempering,Hardening,Spheroidizing,Stress Relieving. | | Sample finished time | Within 7 days with available mold,for free. | | Bulk delivery time | 10-15 working days or TBD based on the specific order quantities. | | Production flow | Heading→washer assembly→Threading→Secondary machine→heat treatment→plating→Anti-slipping→Baking→QA Inspection&sorting→Packing→Shipping. | ## Description Custom Fastener Flat Plain Washer /Spring Washer /External Internal Lock/ Wave Washer/Aluminum Stainless Steel is part of our button, pan & round-head screws range (Screws). ### Key details - **Type:** Pan Head - **Standard:** DIN, GB, ANSI, BSW, JIS - **Material:** Stainless Steel - **Grade:** 8.8 - **Head Style:** Round - **Groove:** Cross - **Connection:** Common Bolt - **ISO9001:** 2008 Available configurations include material, head style, standard, grade and c. raw material warehouse. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1 piece at US$48.00 – 72.00 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 Custom Fastener Flat Plain Washer /Spring Washer /External Internal Lock/ Wave Washer/Aluminum Stainless Steel? The listed minimum order is 1 piece, at US$48.00 – 72.00 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 Custom Fastener Flat Plain Washer /Spring Washer /External Internal Lock/ Wave Washer/Aluminum Stainless Steel? Type: Pan Head; Standard: DIN, GB, ANSI, BSW, JIS; Material: Stainless Steel; Grade: 8.8; Head Style: Round; Groove: Cross. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, head style, standard, grade and c. raw material warehouse. 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 button, pan & round-head screws are available? The Button, Pan & Round-Head Screws category lists 1,831 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/screws/button-pan-round-head-screws/](https://engineeringhardware.com/fastener-products/screws/button-pan-round-head-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/) ## 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