--- title: "Premium Hardened Countersunk Nuts for Internal and External Threads" description: "Premium Hardened Countersunk Nuts for Internal and External Threads — Countersunk & Flat-Head Machine Screws. MOQ 100 pieces, US$0.024 – 0.036." url: https://engineeringhardware.com/product/premium-hardened-countersunk-nuts-for-internal-and-external-threads/ source: Engineering Hardware & Fasteners --- # Premium Hardened Countersunk Nuts for Internal and External Threads [![Premium Hardened Countersunk Nuts for Internal and External Threads](https://img.engineeringhardware.com/Premium-Hardened-Countersunk-Nuts-for-Internal-and-External-Threads.webp)](https://img.engineeringhardware.com/Premium-Hardened-Countersunk-Nuts-for-Internal-and-External-Threads.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/premium-hardened-countersunk-nuts-for-internal-and-external-threads.md) | **US$0.036**100–9,999 pieces | **US$0.024**10,000+ pieces | | --- | --- | MOQ 100 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Counter Sunk Bolt - **Standard:** DIN, GB - **Grade:** 8.8 Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Premium%20Hardened%20Countersunk%20Nuts%20for%20Internal%20and%20External%20Threads%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fpremium-hardened-countersunk-nuts-for-internal-and-external-threads%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 | Countersunk Head | | Connection | Common Bolt | | Head Style | Counter Sunk Bolt | | Standard | DIN, GB | | Grade | 8.8 | | Transport Package | Box | | Specification | M8 | | Origin | Jiangsu, China | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Place of origin | Packaging | Brand | | --- | --- | --- | | Yangzhou, Jiangsu | Box | Shuojia | ## Description Premium Hardened Countersunk Nuts for Internal and External Threads is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Countersunk Head - **Standard:** DIN, GB - **Material:** Stainless Steel - **Grade:** 8.8 - **Head Style:** Counter Sunk Bolt - **Connection:** Common Bolt Available configurations include material, head style, standard and 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$0.024 – 0.036 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 Premium Hardened Countersunk Nuts for Internal and External Threads? The listed minimum order is 100 pieces, at US$0.024 – 0.036 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size. ### How does the price change with quantity? Volume pricing: US$0.036 for 100–9,999 pieces; US$0.024 for 10,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Premium Hardened Countersunk Nuts for Internal and External Threads? Type: Countersunk Head; Standard: DIN, GB; Material: Stainless Steel; Grade: 8.8; Head Style: Counter Sunk Bolt; Connection: Common Bolt. 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 and 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 & 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/) [![Solar Energy Systems SS304 Scm435 Countersunk Head Square Hole Tail-Cutting Composite Bimetal Screw](https://img.engineeringhardware.com/Solar-Energy-Systems-SS304-Scm435-Countersunk-Head-Square-Hole-Tail-Cutting-Composite-Bimetal-Screw.webp)](https://engineeringhardware.com/product/solar-energy-systems-ss304-scm435-countersunk-head-square-hole-tail-cutting/) Countersunk & Flat-Head Machine Screws ### [Solar Energy Systems SS304 Scm435 Countersunk Head Square Hole Tail-Cutting Composite Bimetal Screw](https://engineeringhardware.com/product/solar-energy-systems-ss304-scm435-countersunk-head-square-hole-tail-cutting/) DIN,GB/T · Home, Industrial, Commercial **US$0.06 – 0.60**MOQ 1 ton [![China OEM ODM Manufacturer Direct Supply 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quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Premium%20Hardened%20Countersunk%20Nuts%20for%20Internal%20and%20External%20Threads%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fpremium-hardened-countersunk-nuts-for-internal-and-external-threads%2F)