--- title: "Industrial Metric Hardware Assembly Screws" description: "Industrial Metric Hardware Assembly Screws — Countersunk & Flat-Head Machine Screws. Material: Steel, Standard: DIN. MOQ 1,000 pieces, US$0.12." url: https://engineeringhardware.com/product/industrial-metric-hardware-assembly-screws/ source: Engineering Hardware & Fasteners --- # Industrial Metric Hardware Assembly Screws [![Industrial Metric Hardware Assembly Screws](https://img.engineeringhardware.com/Industrial-Metric-Hardware-Assembly-Screws.webp)](https://img.engineeringhardware.com/Industrial-Metric-Hardware-Assembly-Screws.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/industrial-metric-hardware-assembly-screws.md) Model no. **DIN7991** US$0.12 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Head Style:** Counter Sunk Bolt - **Standard:** DIN - **Grade:** 8.8, 10.9, 12.9 - **Finish:** Plain - **Packing:** Cartons+Plastic Bags - **Head Type:** Hexagon Flange Head - **Surface Treatment:** Black Oxide - **Material:** Steel Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Industrial%20Metric%20Hardware%20Assembly%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Findustrial-metric-hardware-assembly-screws%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 | Model NO. | DIN7991 | | --- | --- | | Connection | Common Bolt | | Head Style | Counter Sunk Bolt | | Standard | DIN | | Grade | 8.8, 10.9, 12.9 | | Application | Machinery, Chemical Industry, Environmental, Building, Industry | | Finish | Plain | | Packing | Cartons+Plastic Bags | | Head Type | Hexagon Flange Head | | Surface Treatment | Black Oxide | | Transport Package | Carton+Pallet | | Specification | M6-M100 | | Origin | Zhejiang, China | | Production Capacity | 100000 Piece/Pieces Per Month | | Customization | Available | | Material | Steel | | Type | Countersunk Head | | OEM/ODM Services | Yes, we accept OEM/ODM orders. | | Quality Guarantee | We follow strict quality control measures and offer a lifetime warranty on all products. | | Trustworthiness | We are a reputable fasteners factory in China with years of experience and credit guarantees from reputable groups. | | Pricing | Contact us for competitive pricing on high-quality products. | | Quality Control | Our QC team inspects every production link and provides Material Test Certificates. | | Free Samples | New customers can request free samples, with express charges covered by the client. | | Acceptance of Small Orders | Yes, we accept orders of any size and maintain stock for various fasteners. | | Delivery Time | Items in stock can be delivered within 15 days, while larger quantities may take 25-35 days. | | Packaging | Standard packing is 20-25kg per carton, with customized packaging available upon request. | | Payment Terms | We accept T/T, L/C, D/P for general orders, and PayPal, Western Union for small or sample orders. | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | item | value | | --- | --- | | Finish | Plain | | Material | Steel | | Place of Origin | China | | | Zhejiang | | Model Number | DIN7991 | | Standard | DIN | | Material | Steel | | Surface treatment | Black Oxide | | Application | Industry | | Packing | Cartons+plastic Bags | | Head type | Hexagon Flange Head | ## Description Industrial Metric Hardware Assembly Screws is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Countersunk Head - **Standard:** DIN - **Material:** Steel - **Grade:** 8.8, 10.9, 12.9 - **Head Type:** Hexagon Flange Head - **Head Style:** Counter Sunk Bolt - **Surface Treatment:** Black Oxide - **Finish:** Plain Available configurations include head style, standard, grade, finish and packing. 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 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 Industrial Metric Hardware Assembly Screws? The listed minimum order is 1,000 pieces, at US$0.12 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 Industrial Metric Hardware Assembly Screws? Type: Countersunk Head; Standard: DIN; Material: Steel; Grade: 8.8, 10.9, 12.9; Head Type: Hexagon Flange Head; Head Style: Counter Sunk Bolt. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include head style, standard, grade, finish and packing. 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/) [![DIN 7991 Hexagon Socket Countersunk Csk Head Machine Screw Stainless Steel 316 Fasteners](https://img.engineeringhardware.com/DIN-7991-Hexagon-Socket-Countersunk-Csk-Head-Machine-Screw-Stainless-Steel-316-Fasteners.webp)](https://engineeringhardware.com/product/din-7991-hexagon-socket-countersunk-csk-head-machine-screw-stainless-steel-316/) Countersunk & Flat-Head Machine Screws ### [DIN 7991 Hexagon Socket Countersunk Csk Head Machine Screw Stainless Steel 316 Fasteners](https://engineeringhardware.com/product/din-7991-hexagon-socket-countersunk-csk-head-machine-screw-stainless-steel-316/) Countersunk Head · DIN, GB, ANSI, BSW **US$0.0636 – 0.22**MOQ 50,000 pieces [![Made in China Hexagon Coupling Galvanized Steel Lock Slotted 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Steel Carbon Steel Color Zinc-Plated Cross Recessed Countersunk Head Machine Screw](https://img.engineeringhardware.com/Wholesale-Price-Stainless-Steel-Carbon-Steel-Color-Zinc-Plated-Cross-Recessed-Countersunk-Head-Machine-Screw.webp)](https://engineeringhardware.com/product/wholesale-price-stainless-steel-carbon-steel-color-zinc-plated-cross-recessed/) Countersunk & Flat-Head Machine Screws ### [Wholesale Price Stainless Steel Carbon Steel Color Zinc-Plated Cross Recessed Countersunk Head Machine Screw](https://engineeringhardware.com/product/wholesale-price-stainless-steel-carbon-steel-color-zinc-plated-cross-recessed/) Countersunk Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.012 – 0.12**MOQ 1,000 pieces [![Vodafast Round Flat Head Screw with Plastic Head Assembled](https://img.engineeringhardware.com/Vodafast-Round-Flat-Head-Screw-with-Plastic-Head-Assembled.webp)](https://engineeringhardware.com/product/vodafast-round-flat-head-screw-with-plastic-head-assembled/) Countersunk & Flat-Head Machine Screws ### [Vodafast Round Flat Head Screw with Plastic Head Assembled](https://engineeringhardware.com/product/vodafast-round-flat-head-screw-with-plastic-head-assembled/) Round Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.0084 – 0.012**MOQ 10,000 pieces **US$0.12**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%20Industrial%20Metric%20Hardware%20Assembly%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Findustrial-metric-hardware-assembly-screws%2F)