--- title: "Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws" description: "Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk He… — Socket Head Cap & Allen Screws. MOQ 1 piece, US$0.12." url: https://engineeringhardware.com/product/hardware-fasteners-brass-screws-copper-screws-din7991-hex-socket-flat-countersunk/ source: Engineering Hardware & Fasteners --- # Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws [![Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws](https://img.engineeringhardware.com/Hardware-Fasteners-Brass-Screws-Copper-Screws-DIN7991-Hex-Socket-Flat-Countersunk-Head-Machine-Screws-DIN7991-Furniture-Screws.webp)](https://img.engineeringhardware.com/Hardware-Fasteners-Brass-Screws-Copper-Screws-DIN7991-Hex-Socket-Flat-Countersunk-Head-Machine-Screws-DIN7991-Furniture-Screws.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/hardware-fasteners-brass-screws-copper-screws-din7991-hex-socket-flat-countersunk.md) Model no. **DIN7991** US$0.12 / piece MOQ 1 piece · Final price confirmed in your quote - **Material:** Brass - **Head Style:** Round - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Grade:** 8.8 - **Finish:** Plain - **Package Size:** 25.00cm * 25.00cm * 15.00cm - **Steel Grade:** DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449 - **Customized Ideal Fasteners:** Our custom-tailored services are based on detailed customer-provided samples and drawings, ensuring the perfect fit for your unique application. Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Hardware%2C%20Fasteners%2C%20Brass%20Screws%2C%20Copper%20Screws%2C%20DIN7991%20Hex%20Socket%20Flat%20Countersunk%20Head%20Machine%20Screws%2C%20DIN7991%20Furniture%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhardware-fasteners-brass-screws-copper-screws-din7991-hex-socket-flat-countersunk%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 | Brass | | Type | Countersunk Head | | Model NO. | DIN7991 | | Groove | Hexagon Socket | | Connection | Common Bolt | | Head Style | Round | | Standard | DIN, GB, ANSI, BSW, JIS, GOST | | Grade | 8.8 | | MOQ | 10000pieces | | Finish | Plain | | Name | Hexagon Socket Countersunk Head Screws | | Certificate | ISO9001 | | Measurement System | Inch, Metric | | Transport Package | 20-25kg/Carton+900kg Pallet | | Specification | M3-M20 | | Origin | China | | HS Code | 731815 | | Production Capacity | 1000ton/Month | | Package Size | 25.00cm * 25.00cm * 15.00cm | | Package Gross Weight | 25.000kg | | Lead Time | 5 days (1 - 1000 Pieces) To be negotiated ( > 1000 Pieces) | | Stainless Steel | SS201, SS303, SS304, SS316,SS316L,SS904L,F593 | | Steel Grade | DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449 | | M2-M24 | Cold Froging,M24-M100 Hot Forging, | | Busy season | 15-30days,Slack seaon:10-15days | | Steel | 4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782 | | https | //bolnut-fastener.en.made-in-china.com/product-group/gbItzfEMYHcd/Socket-head-Screws-1.html?pv_id=1j5q5n3v5ae6&faw_id=null&bv_id=1j5q5nlhv43c | | Professional Manufacturer | Every single fastener we produce is crafted with precision and care, strictly adhering to the bespoke specifications and high-performance standards set forth by our valued clients. | | Quality Assurance | We employ rigorous durability tests and meticulous technical design evaluations to significantly extend the lifespan and reliability of our fasteners, ensuring remarkable durability. | | Cost-Effective Solutions | Leverage our competitive pricing structure, which is underpinned by our robust professional factory production capabilities, to achieve cost efficiency without compromising on quality. | | Comprehensive Fastening Solutions | With over a decade of industry experience, we offer an extensive array of part selections tailored to perfectly meet your specific requirements and challenges. | | Customized Ideal Fasteners | Our custom-tailored services are based on detailed customer-provided samples and drawings, ensuring the perfect fit for your unique application. | | Category | [Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) | ## Technical parameters | Standard | DIN,ASTM/ANSI JIS EN ISO,AS,GB | | --- | --- | | Material | Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593 | | Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449 | | | Finishing | Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated | | Production Process | M2-M24:Cold Froging,M24-M100 Hot Forging,Machining and CNC for Customized fastener | | Customized ProductsLead time | Busy season:15-30days,Slack seaon:10-15days | | Stock Products | Steel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782Stainless steel: All DIN Standard stainless steel Bolt | | Free samples for standard fastener. | | | For more information visit: https://bolnut-fastener.en.made-in-china.com/product-group/gbItzfEMYHcd/Socket-head-Screws-1.html?pv_id=1j5q5n3v5ae6&faw_id=null&bv_id=1j5q5nlhv43c | | ## Description Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws is part of our socket head cap & allen screws range (Screws). ### Key details - **Type:** Countersunk Head - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Material:** Brass - **Grade:** 8.8 - **Head Style:** Round - **Groove:** Hexagon Socket - **Finish:** Plain - **Connection:** Common Bolt Available configurations include material, head style, standard, grade and finish. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1 piece 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 Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws? The listed minimum order is 1 piece, 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 Hardware, Fasteners, Brass Screws, Copper Screws, DIN7991 Hex Socket Flat Countersunk Head Machine Screws, DIN7991 Furniture Screws? Type: Countersunk Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Brass; Grade: 8.8; Head Style: Round; Groove: Hexagon Socket. 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 finish. 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/) [![Metal Counter Sunk M6 Washer Jdm Schubert DIN 965 M3X5 Motocross Sole Screws Self Taping Screw Flat M3 Countersunk Screw](https://img.engineeringhardware.com/Metal-Counter-Sunk-M6-Washer-Jdm-Schubert-DIN-965-M3X5-Motocross-Sole-Screws-Self-Taping-Screw-Flat-M3-Countersunk-Screw.webp)](https://engineeringhardware.com/product/metal-counter-sunk-m6-washer-jdm-schubert-din-965-m3x5-motocross-sole-screws-self/) Socket Head Cap & Allen Screws ### [Metal Counter Sunk M6 Washer Jdm Schubert DIN 965 M3X5 Motocross Sole Screws Self Taping Screw Flat M3 Countersunk Screw](https://engineeringhardware.com/product/metal-counter-sunk-m6-washer-jdm-schubert-din-965-m3x5-motocross-sole-screws-self/) Socket Head Cap Screw · DIN, GB, ANSI, BSW, JIS, GOST **US$0.12 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Screws](https://engineeringhardware.com/product/stainless-steel-screws-american-standard-hex-socket-flat-head-cap-screws-hexagon/) Socket Flat Head · DIN, ANSI, GB, JIS, BSW **US$0.12**MOQ 1 piece [![Stainless Steel Screw DIN912 Hexagon Socket Head Cap Screws Customized](https://img.engineeringhardware.com/Stainless-Steel-Screw-DIN912-Hexagon-Socket-Head-Cap-Screws-Customized.webp)](https://engineeringhardware.com/product/stainless-steel-screw-din912-hexagon-socket-head-cap-screws-customized/) Socket Head Cap & Allen Screws ### [Stainless Steel Screw DIN912 Hexagon Socket Head Cap Screws Customized](https://engineeringhardware.com/product/stainless-steel-screw-din912-hexagon-socket-head-cap-screws-customized/) Round Head · DIN **US$0.012 – 0.024**MOQ 200,000 pieces **US$0.12**MOQ 1 pieceGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Hardware%2C%20Fasteners%2C%20Brass%20Screws%2C%20Copper%20Screws%2C%20DIN7991%20Hex%20Socket%20Flat%20Countersunk%20Head%20Machine%20Screws%2C%20DIN7991%20Furniture%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fhardware-fasteners-brass-screws-copper-screws-din7991-hex-socket-flat-countersunk%2F)