--- title: "China Rare Earth Magnetic Material D25mm Pot Rectangular Block Countersunk Single Hole N52 Neodymium Magnet for Mounting Screw" description: "China Rare Earth Magnetic Material D25mm Pot Rectangular Block Countersunk Single Hole N… — Countersunk & Flat-Head Machine Screws." url: https://engineeringhardware.com/product/china-rare-earth-magnetic-material-d25mm-pot-rectangular-block-countersunk-single/ source: Engineering Hardware & Fasteners --- # China Rare Earth Magnetic Material D25mm Pot Rectangular Block Countersunk Single Hole N52 Neodymium Magnet for Mounting Screw [![China Rare Earth Magnetic Material D25mm Pot Rectangular Block Countersunk Single Hole N52 Neodymium Magnet for Mounting Screw](https://img.engineeringhardware.com/China-Rare-Earth-Magnetic-Material-D25mm-Pot-Rectangular-Block-Countersunk-Single-Hole-N52-Neodymium-Magnet-for-Mounting-Screw.webp)](https://img.engineeringhardware.com/China-Rare-Earth-Magnetic-Material-D25mm-Pot-Rectangular-Block-Countersunk-Single-Hole-N52-Neodymium-Magnet-for-Mounting-Screw.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/china-rare-earth-magnetic-material-d25mm-pot-rectangular-block-countersunk-single.md) Model no. **Neodymium Magnet** US$0.60 – 3.00 / piece MOQ 100 pieces · Final price confirmed in your quote - **Coating:** Nickel - **Grade:** N35-N52 - **Magnet Grade:** N35-N52 Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20China%20Rare%20Earth%20Magnetic%20Material%20D25mm%20Pot%20Rectangular%20Block%20Countersunk%20Single%20Hole%20N52%20Neodymium%20Magnet%20for%20Mounting%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fchina-rare-earth-magnetic-material-d25mm-pot-rectangular-block-countersunk-single%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 | | --- | --- | | Application | Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Motor Magnet | | Shape | Disc | | Model NO. | Neodymium Magnet | | Coating | Nickel | | Grade | N35-N52 | | Composite | Neodymium Magnet | | Working Temperature | 80-220 Degree Centigrade | | Density | 7.5-7.6 G Per Cubic Centimetre | | Magnet Grade | N35-N52 | | Type | Permanent | | Magnet Power | Powerful Magnets | | Transport Package | Foam+Box | | Specification | Special custom | | Origin | China | | HS Code | 85051110 | | Production Capacity | 1000000 Piece/Month | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Type | Permanent Sintered Neodymium Magnets/Rare Earth Magnet | | | --- | --- | --- | | Material | NdFeB | | | Shape | Block,Bar,Cube,Disc,Ring,Cylinder,Ball,Arc,Trapezoid,etc | | | Size | Customized according to customer's request | | | Coating | Ni,Zn,Epoxy,Parylene,Gold,Passivated,etc | | | Density | 7.5-7.6 g/ cm³ | | | Delivery date | 7-10 days for common samples,15-20 days for mass production | | | Magnetic Grade&Working Temperature | Magnetic Grade | Working Temperature | | N35-N45 | 80ºC (176ºF) | | | N48-N52 | 60ºC (160ºF) | | | 35M-52M | 100ºC (212ºF) | | | 33H-50H | 120ºC (248ºF) | | | 33SH-45SH | 150ºC (302ºF) | | | 30UH-40UH | 180ºC (356ºF) | | | 28EH-38RH | 200ºC (392ºF) | | | 28AH-33AH | 220ºC (428ºF) | | ## Description China Rare Earth Magnetic Material D25mm Pot Rectangular Block Countersunk Single Hole N52 Neodymium Magnet for Mounting Screw is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Permanent - **Grade:** N35-N52 - **Application:** Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Motor Magnet - **Shape:** Disc - **Coating:** Nickel - **Composite:** Neodymium Magnet - **Working Temperature:** 80-220 Degree Centigrade - **Density:** 7.5-7.6 G Per Cubic Centimetre Available configurations include coating, grade and magnet grade. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 100 pieces at US$0.60 – 3.00 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 China Rare Earth Magnetic Material D25mm Pot Rectangular Block Countersunk Single Hole N52 Neodymium Magnet for Mounting Screw? The listed minimum order is 100 pieces, at US$0.60 – 3.00 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 China Rare Earth Magnetic Material D25mm Pot Rectangular Block Countersunk Single Hole N52 Neodymium Magnet for Mounting Screw? Type: Permanent; Grade: N35-N52; Application: Electronic Products, Speaker Magnet, Industrial Magnet, Jewelry Magnet, Motor Magnet; Shape: Disc; Coating: Nickel; Composite: Neodymium Magnet. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include coating, grade and magnet grade. 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 & 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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/) [![Stainless Steel Screw Flat Head Mini Screw Machine Screw](https://img.engineeringhardware.com/Stainless-Steel-Screw-Flat-Head-Mini-Screw-Machine-Screw.webp)](https://engineeringhardware.com/product/stainless-steel-screw-flat-head-mini-screw-machine-screw/) Countersunk & Flat-Head Machine Screws ### [Stainless Steel Screw Flat Head Mini Screw Machine Screw](https://engineeringhardware.com/product/stainless-steel-screw-flat-head-mini-screw-machine-screw/) Round Head · DIN **US$0.012 – 0.024**MOQ 100,000 pieces [![Customized High Quality Precision Stainless Steel Hexagon Socket Flat Head 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