--- title: "DIN 7991 Hexagon Socket Countersunk Head Cap Screws" description: "DIN 7991 Hexagon Socket Countersunk Head Cap Screws — Countersunk & Flat-Head Machine Screws. MOQ 5,000 pieces, US$0.0036 – 0.012." url: https://engineeringhardware.com/product/din-7991-hexagon-socket-countersunk-head-cap-screws/ source: Engineering Hardware & Fasteners --- # DIN 7991 Hexagon Socket Countersunk Head Cap Screws [![DIN 7991 Hexagon Socket Countersunk Head Cap Screws](https://img.engineeringhardware.com/DIN-7991-Hexagon-Socket-Countersunk-Head-Cap-Screws-2.webp)](https://img.engineeringhardware.com/DIN-7991-Hexagon-Socket-Countersunk-Head-Cap-Screws-2.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/din-7991-hexagon-socket-countersunk-head-cap-screws.md) Model no. **DIN 7991** | **US$0.012**5,000–19,999 pieces | **US$0.0072**20,000–49,999 pieces | **US$0.0036**50,000+ pieces | | --- | --- | --- | MOQ 5,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Counter Sunk Bolt - **Standard:** DIN, GB, ANSI, BSW, JIS, ISO - **Grade:** A2-70, A4-80, A4-70 - **Thread:** Unc, Unf, Un, Metric Coarse, Fine - **Surface:** Plain, Zinc Plated (Blue, White, Black, Yellow), N - **Exterior Finish:** Customized - **Customized:** Available Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20DIN%207991%20Hexagon%20Socket%20Countersunk%20Head%20Cap%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin-7991-hexagon-socket-countersunk-head-cap-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 | Customization | Available | | --- | --- | | Material | Stainless Steel | | Type | Countersunk Head | | Model NO. | DIN 7991 | | Groove | Hexagon | | Connection | Common Bolt | | Head Style | Counter Sunk Bolt | | Standard | DIN, GB, ANSI, BSW, JIS, ISO | | Grade | A2-70, A4-80, A4-70 | | Thread | Unc, Unf, Un, Metric Coarse, Fine | | Surface | Plain, Zinc Plated (Blue, White, Black, Yellow), N | | Quality | 100% Tested | | Price | Factory Price | | Lead Time | 15-30 Days | | Package | Standard Package or Customer's Packing | | Box | Customer's Brand Box/Plain Box | | MOQ | Can Be Negotiated | | Shipment | by Sea / Truck / Plane / Express | | Exterior Finish | Customized | | Sample | Available | | Customized | Available | | Service | One-Stop Service | | Online Sales | 24 Hours Online | | OEM/ODM | Available | | Transport Package | Bulk Packaging, Small Box(Glue Box, Color Box) | | Specification | M2 - M10 | | Origin | Ningbo, China | | HS Code | 7318159001 | | Production Capacity | 1000tons Per Month | | Package Size | 10.00cm * 10.00cm * 5.00cm | | Package Gross Weight | 0.500kg | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Packaging | Bulk Packaging,Small Box(glue box,color box) & Carton&Wooden Pallet(Europallet 1200*800mm)or According to customer's requirement | | --- | --- | | Trade Term | EXW,FOB,CIF,CFR,CNF | | Payment Term | T/T,Western Union,Paypal,L/C | | Shipping Port | Ningbo,Zhapu,Shanghai | | Advantages | • Professional and experienced production,quality inspection,package,design and sales team• Response within 2 hours• Full stock for almost standard fasteners• Fast delivery and response• Samples available | ## Description DIN 7991 Hexagon Socket Countersunk Head Cap Screws is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Countersunk Head - **Standard:** DIN, GB, ANSI, BSW, JIS, ISO - **Material:** Stainless Steel - **Grade:** A2-70, A4-80, A4-70 - **Thread:** Unc, Unf, Un, Metric Coarse, Fine - **Head Style:** Counter Sunk Bolt - **Groove:** Hexagon - **Connection:** Common Bolt Available configurations include material, head style, standard, grade and thread. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 5,000 pieces at US$0.0036 – 0.012 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 DIN 7991 Hexagon Socket Countersunk Head Cap Screws? The listed minimum order is 5,000 pieces, at US$0.0036 – 0.012 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$0.012 for 5,000–19,999 pieces; US$0.0072 for 20,000–49,999 pieces; US$0.0036 for 50,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of DIN 7991 Hexagon Socket Countersunk Head Cap Screws? Type: Countersunk Head; Standard: DIN, GB, ANSI, BSW, JIS, ISO; Material: Stainless Steel; Grade: A2-70, A4-80, A4-70; Thread: Unc, Unf, Un, Metric Coarse, Fine; 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 material, head style, standard, grade and thread. 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/) [![304 Stainless Steel Cross Countersunk Head Internal Expansion Screw](https://img.engineeringhardware.com/304-Stainless-Steel-Cross-Countersunk-Head-Internal-Expansion-Screw.webp)](https://engineeringhardware.com/product/304-stainless-steel-cross-countersunk-head-internal-expansion-screw/) Countersunk & Flat-Head Machine Screws ### [304 Stainless Steel Cross Countersunk Head Internal Expansion Screw](https://engineeringhardware.com/product/304-stainless-steel-cross-countersunk-head-internal-expansion-screw/) DIN · Stainless Steel **US$0.18 – 0.48**MOQ 1,000 pieces [![Carbon Steel Black Nickel-Plated Flat Head Cross 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Nails](https://img.engineeringhardware.com/Cross-Countersunk-Cement-Nails.webp)](https://engineeringhardware.com/product/cross-countersunk-cement-nails/) Countersunk & Flat-Head Machine Screws ### [Cross Countersunk Cement Nails](https://engineeringhardware.com/product/cross-countersunk-cement-nails/) Round Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012 – 0.12**MOQ 1 piece **US$0.0036 – 0.012**MOQ 5,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20DIN%207991%20Hexagon%20Socket%20Countersunk%20Head%20Cap%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin-7991-hexagon-socket-countersunk-head-cap-screws%2F)