--- title: "DIN7991 Hex Socket M6 Flat Head Cap Head Screw" description: "DIN7991 Hex Socket M6 Flat Head Cap Head Screw — Socket Head Cap & Allen Screws. Material: Carbon Steel, Standard: DIN, GB. MOQ 1,000 pieces, US$0.012 – 0.06." url: https://engineeringhardware.com/product/din7991-hex-socket-m6-flat-head-cap-head-screw/ source: Engineering Hardware & Fasteners --- # DIN7991 Hex Socket M6 Flat Head Cap Head Screw [![DIN7991 Hex Socket M6 Flat Head Cap Head Screw](https://img.engineeringhardware.com/DIN7991-Hex-Socket-M6-Flat-Head-Cap-Head-Screw.webp)](https://img.engineeringhardware.com/DIN7991-Hex-Socket-M6-Flat-Head-Cap-Head-Screw.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/din7991-hex-socket-m6-flat-head-cap-head-screw.md) Model no. **DIN 7991** | **US$0.06**1,000–4,999 pieces | **US$0.036**5,000–9,999 pieces | **US$0.012**10,000+ pieces | | --- | --- | --- | MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Hexagonal - **Standard:** DIN, GB - **Grade:** 10.9 - **Screw Drive Type:** Hex Socket - **Head Shape:** Flat Head - **Material Grade:** Levels 8.8, 10.9, and 12.9 - **Surface Treatment/Coating:** Zinc Plating (Blue-White Zinc, Color Zinc), Nickel Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20DIN7991%20Hex%20Socket%20M6%20Flat%20Head%20Cap%20Head%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin7991-hex-socket-m6-flat-head-cap-head-screw%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 | Carbon Steel | | Type | Round Head | | Model NO. | DIN 7991 | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, GB | | Grade | 10.9 | | Application | Machinery, Chemical Industry, Environmental, Building | | Screw Drive Type | Hex Socket | | Head Shape | Flat Head | | Material Grade | Levels 8.8, 10.9, and 12.9 | | Surface Treatment/Coating | Zinc Plating (Blue-White Zinc, Color Zinc), Nickel | | Packaging | Bulk, Boxed, Rolled, or Packaged as Required | | Country of Origin | China | | Selling Units | Single Item | | Single Package Size | 25X25X15 Cm | | Single Gross Weight | 25.000 Kg | | Model Number | Countersunk Screw | | Size | M2-M20, 3/16"-1/2", or Customized | | Surface Treatment | Black, Galvanized, Yellow Zinc Plated | | Item | Hex Socket Flat Head Screw | | Color | Black | | Transport Package | Cardboard Box+Pallet | | Specification | custom made | | Origin | He Bei | | Package Size | 13.00cm * 8.00cm * 9.00cm | | Package Gross Weight | 10.000kg | | All our processes strictly adhere to ISO9001 | 2008 procedures. We have strict quality control from producing to delivery.Our company had strong technology support, We have cultivated a group of managers who are familiar with product quality , good at modern concept of management. | | Standard parts | 7-15days | | Non-standard parts | 15-25days | | Category | [Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) | ## Technical parameters | Finish | Black Oxide | | --- | --- | | Model Number | DIN7991 | | Head style | Flat | | Place of Origin | Hebei China | ## Description DIN7991 Hex Socket M6 Flat Head Cap Head Screw is part of our socket head cap & allen screws range (Screws). ### Key details - **Type:** Round Head - **Standard:** DIN, GB - **Material:** Carbon Steel - **Grade:** 10.9 - **Size:** M2-M20, 3/16"-1/2", or Customized - **Head Style:** Hexagonal - **Surface Treatment:** Black, Galvanized, Yellow Zinc Plated - **Connection:** Common Bolt Available configurations include material, head style, standard, grade and screw drive type. 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$0.012 – 0.06 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 DIN7991 Hex Socket M6 Flat Head Cap Head Screw? The listed minimum order is 1,000 pieces, at US$0.012 – 0.06 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$0.06 for 1,000–4,999 pieces; US$0.036 for 5,000–9,999 pieces; US$0.012 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 DIN7991 Hex Socket M6 Flat Head Cap Head Screw? Type: Round Head; Standard: DIN, GB; Material: Carbon Steel; Grade: 10.9; Size: M2-M20, 3/16"-1/2", or Customized; Head Style: Hexagonal. 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, grade and screw drive type. 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/) [![DIN7991 Hex Socket Countersunk Head Cap Screws](https://img.engineeringhardware.com/DIN7991-Hex-Socket-Countersunk-Head-Cap-Screws.webp)](https://engineeringhardware.com/product/din7991-hex-socket-countersunk-head-cap-screws/) Socket Head Cap & Allen Screws ### [DIN7991 Hex Socket Countersunk Head Cap Screws](https://engineeringhardware.com/product/din7991-hex-socket-countersunk-head-cap-screws/) Countersunk Head · DIN, GB **US$0.012**MOQ 1,000 pieces [![China Manufacturer Supplier 304 316 DIN7991 Stainless Steel Hardware Hex Socket Countersunk Flat Head 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Cap Screw (Electric Diesel)](https://engineeringhardware.com/product/oem-alt-quality-forklift-spare-part-hyster-4245566-hexagon-socket-head-cap-screw/) Standard · Carbon Steel **US$0.59 – 0.65**MOQ 1 piece **US$0.012 – 0.06**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%20DIN7991%20Hex%20Socket%20M6%20Flat%20Head%20Cap%20Head%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin7991-hex-socket-m6-flat-head-cap-head-screw%2F)