--- title: "Galvanized Fastener Waterproof Roof Washer" description: "Galvanized Fastener Waterproof Roof Washer — Bonded, Sealing & Roofing Washers. MOQ 1,000 pieces, US$0.12 – 2.40." url: https://engineeringhardware.com/product/galvanized-fastener-waterproof-roof-washer/ source: Engineering Hardware & Fasteners --- # Galvanized Fastener Waterproof Roof Washer [![Galvanized Fastener Waterproof Roof Washer](https://img.engineeringhardware.com/Galvanized-Fastener-Waterproof-Roof-Washer.webp)](https://img.engineeringhardware.com/Galvanized-Fastener-Waterproof-Roof-Washer.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Washers › Bonded, Sealing & Roofing Washers](https://engineeringhardware.com/fastener-products/washers/bonded-sealing-roofing-washers/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/galvanized-fastener-waterproof-roof-washer.md) Model no. **PENNACCS GW901** US$0.12 – 2.40 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Color:** Can Be Customized Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Galvanized%20Fastener%20Waterproof%20Roof%20Washer%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fgalvanized-fastener-waterproof-roof-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 | | --- | --- | | After-sales Service | Provide | | Application | Indoor, Outdoor | | Model NO. | PENNACCS GW901 | | Certification | CE, ISO | | Shape | Square, Round or Customized | | Color | Can Be Customized | | Advantage | Easy Construction | | Function | Fix Waterproof Membrane | | Mildew Proof | Mildew Proof | | Usage | Outdoor, Indoor | | Outstanding Feat | Superior Quality | | Long Services | No Less Than 15 Years | | Application Range | Construction, Building, Underground Projects | | Prefabricated Accessories | Can Be Customized | | Value-Added Service | Drawing Design/Site Construction Direction | | Transport Package | Standard Shipping Packaging or Customized | | Specification | Can Be Customized | | Origin | China | | HS Code | 731822 | | Production Capacity | 10000 Pieces/Day | | Key benefits include | 1. | | Category | [Bonded, Sealing & Roofing Washers](https://engineeringhardware.com/fastener-products/washers/bonded-sealing-roofing-washers/) | ## Technical parameters | Model | Materials | Width | Length | | --- | --- | --- | --- | | PENNACCS F001 | Aluminum alloy | 25±3 mm | 2000 mm | | PENNACCS F002 | Galvanized steel | 25±3 mm | 2000 mm | | PENNACCS NC | Galvanized steel | 6.3 mm | 35-210 mm | | PENNACCS GW901 | Galvanized steel | 82*40 mm | | | PENNACCS GW902 | Galvanized steel | 80*38 mm | | | PENNACCS GW903 | Galvanized steel | 40*40 mm | | | PENNACCS GW904 | Galvanized steel | 70*70 mm | | | PENNACCS GW905 | Galvanized steel | 82*40 mm | | ## Description Galvanized Fastener Waterproof Roof Washer is part of our bonded, sealing & roofing washers range (Washers). ### Key details - **Application:** Indoor, Outdoor - **Certification:** CE, ISO - **Shape:** Square, Round or Customized - **Color:** Can Be Customized - **Advantage:** Easy Construction - **Function:** Fix Waterproof Membrane - **Mildew Proof:** Mildew Proof - **Usage:** Outdoor, Indoor Available configurations include color. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1,000 pieces at US$0.12 – 2.40 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 Galvanized Fastener Waterproof Roof Washer? The listed minimum order is 1,000 pieces, at US$0.12 – 2.40 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 Galvanized Fastener Waterproof Roof Washer? Application: Indoor, Outdoor; Certification: CE, ISO; Shape: Square, Round or Customized; Color: Can Be Customized; Advantage: Easy Construction; Function: Fix Waterproof Membrane. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include color. 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 bonded, sealing & roofing washers are available? The Bonded, Sealing & Roofing Washers category lists 2,033 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/washers/bonded-sealing-roofing-washers/](https://engineeringhardware.com/fastener-products/washers/bonded-sealing-roofing-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 Bonded, Sealing & Roofing Washers →](https://engineeringhardware.com/fastener-products/washers/bonded-sealing-roofing-washers/) [![China Wholesale Factory Supply Black and White Clear Round Rubber Flat Washer](https://img.engineeringhardware.com/China-Wholesale-Factory-Supply-Black-and-White-Clear-Round-Rubber-Flat-Washer.webp)](https://engineeringhardware.com/product/china-wholesale-factory-supply-black-and-white-clear-round-rubber-flat-washer/) Bonded, Sealing & Roofing Washers ### [China Wholesale Factory Supply Black and White Clear Round Rubber Flat Washer](https://engineeringhardware.com/product/china-wholesale-factory-supply-black-and-white-clear-round-rubber-flat-washer/) Flat Gasket · DIN, ASME, BS, JIS, as, En, GB **US$0.0006 – 0.0024**MOQ 1 piece [![RGBW LED Waterproof Exterior Wall Washer Lights DMX Projector Lighting for Hotel Stage Decoration Outdoor 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Use](https://engineeringhardware.com/product/custom-heavy-duty-epdm-nbr-and-silicone-washers-for-industrial-use/) Customized · Machinery, Industrial Component, Electronic Product, Vehi… **US$0.14 – 2.04**MOQ 100 pieces [![Waterproof Customized Marine Grade Stainless Steel EPDM Rubber Bonded Sealing Washer](https://img.engineeringhardware.com/Waterproof-Customized-Marine-Grade-Stainless-Steel-EPDM-Rubber-Bonded-Sealing-Washer.webp)](https://engineeringhardware.com/product/waterproof-customized-marine-grade-stainless-steel-epdm-rubber-bonded-sealing-washer/) Bonded, Sealing & Roofing Washers ### [Waterproof Customized Marine Grade Stainless Steel EPDM Rubber Bonded Sealing Washer](https://engineeringhardware.com/product/waterproof-customized-marine-grade-stainless-steel-epdm-rubber-bonded-sealing-washer/) Bonded Sealing EPDM Washer · DIN,ASTM/ANSI JIS En ISO,as,GB **US$0.036 – 0.36**MOQ 10,000 pieces **US$0.12 – 2.40**MOQ 1,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Galvanized%20Fastener%20Waterproof%20Roof%20Washer%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fgalvanized-fastener-waterproof-roof-washer%2F)