--- title: "Hex Socket Flat Countersunk Head Cap Screws DIN 7991" description: "Hex Socket Flat Countersunk Head Cap Screws DIN 7991 — Socket Head Cap & Allen Screws. MOQ 10,000 pieces, US$0.11 – 12.00." url: https://engineeringhardware.com/product/hex-socket-flat-countersunk-head-cap-screws-din-7991/ source: Engineering Hardware & Fasteners --- # Hex Socket Flat Countersunk Head Cap Screws DIN 7991 [![Hex Socket Flat Countersunk Head Cap Screws DIN 7991](https://img.engineeringhardware.com/Hex-Socket-Flat-Countersunk-Head-Cap-Screws-DIN-7991.webp)](https://img.engineeringhardware.com/Hex-Socket-Flat-Countersunk-Head-Cap-Screws-DIN-7991.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Screws › Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/hex-socket-flat-countersunk-head-cap-screws-din-7991.md) Model no. **Multi-size** US$0.11 – 12.00 / piece MOQ 10,000 pieces · Final price confirmed in your quote - **Head Style:** Round - **Standard:** DIN - **Grade:** 4.8/8.8/10.9/12.9 - **Finish:** Hot Galvanizing - **Surface Treatment:** Zinc Plated - **Thread Size:** Full Thread - **Hot DIP Treatment:** No - **Material:** Carbon Steel/Stainless 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%20Hex%20Socket%20Flat%20Countersunk%20Head%20Cap%20Screws%20DIN%207991%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhex-socket-flat-countersunk-head-cap-screws-din-7991%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. | Multi-size | | --- | --- | | Connection | Common Bolt | | Head Style | Round | | Standard | DIN | | Grade | 4.8/8.8/10.9/12.9 | | Application | Machinery, Chemical Industry, Environmental, Building | | Finish | Hot Galvanizing | | Produce Method | Cold Heading | | Surface Treatment | Zinc Plated | | Thread Size | Full Thread | | Hot DIP Treatment | No | | Transport Package | Carton with Pallet | | Specification | Multi-size | | Origin | China | | HS Code | 7318150000 | | Production Capacity | 3billion/Year | | Customization | Available | | Material | Carbon Steel/Stainless Steel | | Type | Hexagon Head | | Category | [Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) | ## Technical parameters | Material | Carbon steel/Stainless steel | | --- | --- | | Grade | 4.8, 8.8, 10.9, 12.9 | | Size | M3-M24 | | Length | 6mm--200mm | | Standrad | DIN/ASME/ANSI/ISO/JIS | ## Description Hex Socket Flat Countersunk Head Cap Screws DIN 7991 is part of our socket head cap & allen screws range (Screws). ### Key details - **Type:** Hexagon Head - **Standard:** DIN - **Material:** Carbon Steel/Stainless Steel - **Grade:** 4.8/8.8/10.9/12.9 - **Thread Size:** Full Thread - **Head Style:** Round - **Surface Treatment:** Zinc Plated - **Finish:** Hot Galvanizing Available configurations include head style, standard, grade, finish and surface treatment. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 10,000 pieces at US$0.11 – 12.00 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 Hex Socket Flat Countersunk Head Cap Screws DIN 7991? The listed minimum order is 10,000 pieces, at US$0.11 – 12.00 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 Hex Socket Flat Countersunk Head Cap Screws DIN 7991? Type: Hexagon Head; Standard: DIN; Material: Carbon Steel/Stainless Steel; Grade: 4.8/8.8/10.9/12.9; Thread Size: Full Thread; Head Style: Round. 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 surface treatment. 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 socket head cap & allen screws are available? The Socket Head Cap & Allen Screws category lists 2,042 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-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 Socket Head Cap & Allen Screws →](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) [![High Quality Hex Socket Furniture Confirmat Screws M7 X 50mm](https://img.engineeringhardware.com/High-Quality-Hex-Socket-Furniture-Confirmat-Screws-M7-X-50mm.webp)](https://engineeringhardware.com/product/high-quality-hex-socket-furniture-confirmat-screws-m7-x-50mm/) Socket Head Cap & Allen Screws ### [High Quality Hex Socket Furniture Confirmat Screws M7 X 50mm](https://engineeringhardware.com/product/high-quality-hex-socket-furniture-confirmat-screws-m7-x-50mm/) Carbon Steel · Zinc Plated **US$0.012 – 0.036**MOQ 10,000 pieces [![M3-M10 Zinc Plated Pan Head Machine Screws Phillips Drive Cylindrical Machine 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