--- title: "DIN7991 Grade 12.9 Copper Plating Hexagon Socket Countersunk Head Cap Screws Hex Socket Flat Head Cap Screw Allen Bolts Csk Alloy Steel" description: "DIN7991 Grade 12.9 Copper Plating Hexagon Socket Countersunk Head Cap Screws Hex Socket… — Countersunk, Plow & Elevator Bolts." url: https://engineeringhardware.com/product/din7991-grade-12-9-copper-plating-hexagon-socket-countersunk-head-cap-screws-hex/ source: Engineering Hardware & Fasteners --- # DIN7991 Grade 12.9 Copper Plating Hexagon Socket Countersunk Head Cap Screws Hex Socket Flat Head Cap Screw Allen Bolts Csk Alloy Steel [![DIN7991 Grade 12.9 Copper Plating Hexagon Socket Countersunk Head Cap Screws Hex Socket Flat Head Cap Screw Allen Bolts Csk Alloy Steel](https://img.engineeringhardware.com/DIN7991-Grade-12-9-Copper-Plating-Hexagon-Socket-Countersunk-Head-Cap-Screws-Hex-Socket-Flat-Head-Cap-Screw-Allen-Bolts-Csk-Alloy-Steel.webp)](https://img.engineeringhardware.com/DIN7991-Grade-12-9-Copper-Plating-Hexagon-Socket-Countersunk-Head-Cap-Screws-Hex-Socket-Flat-Head-Cap-Screw-Allen-Bolts-Csk-Alloy-Steel.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Bolts › Countersunk, Plow & Elevator Bolts](https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/) Updated 2026-11-03 · [Markdown version](https://engineeringhardware.com/product/din7991-grade-12-9-copper-plating-hexagon-socket-countersunk-head-cap-screws-hex.md) Model no. **DIN7991** US$1.20 – 12.00 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** High Strength Steel - **Head Style:** Hexagonal - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Grade:** 12.9 - **Surface Treatment:** Copper Plating/Yellow Zinc Plating - **Head Shape:** Flat Head Cap - **Raw Material:** Alloy Steel / Stainless Steel - **Package Size:** 0.50cm * 0.30cm * 0.20cm 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%20Grade%2012.9%20Copper%20Plating%20Hexagon%20Socket%20Countersunk%20Head%20Cap%20Screws%20Hex%20Socket%20Flat%20Head%20Cap%20Screw%20Allen%20Bolts%20Csk%20Alloy%20Steel%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdin7991-grade-12-9-copper-plating-hexagon-socket-countersunk-head-cap-screws-hex%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 | High Strength Steel | | Type | Countersunk Head | | Model NO. | DIN7991 | | Groove | Hexagon | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, GB, ANSI, BSW, JIS, GOST | | Grade | 12.9 | | Surface Treatment | Copper Plating/Yellow Zinc Plating | | Head Shape | Flat Head Cap | | Raw Material | Alloy Steel / Stainless Steel | | MOQ | One Master Carton(Around 25-30kgs) for Each Size | | Application | Machinery | | Export Markets | Global | | Transport Package | 1. Small Boxes Into Outer Carton 2. Bulk Packaging | | Specification | M3-M20 | | Origin | China | | HS Code | 731815 | | Production Capacity | 1000 Tons Per Month | | Package Size | 0.50cm * 0.30cm * 0.20cm | | Package Gross Weight | 0.500kg | | include | Drop-in Anchor | | Production Range | Diameter | | Package | 25-30KGS/CARTON,36-48CARTONS/PALLET | | Produce time | Standard sizes in stock 15-30 working days, Non-standard sizes, | | by Air, Express,like Fedex, UPS, DHL,etc. More than 100KGS | By sea, we have | | Bulk order | 15-30 working days(Standard). | | Category | [Countersunk, Plow & Elevator Bolts](https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/) | ## Technical parameters | Material | 1.Stainless Steel:SS304,SS316 2.Alloy Steel | | --- | --- | | Grade | 8.8, 10.9, 12.9 | | Finish | Plain(Black oxide), Zinc Plated(White/Yellow), Copper Plating, H.D.G and etc. | | Thread | Metric,UNC,UNF,BSW | | Standard | ISO, DIN, ASME, JIS, BS and Non-standard | | Sample Service | Samples can be in free when you confirm our price is acceptable. | | Certificate | ISO9001,CE, SGS | | Advantage | 1. Competitive price; 2. OEM service available | | Packing | 1. Bulk in cartons (25-30kg Max.)+wooden pallet 2. Small Boxes into outer carton + wooden pallet 3. According to customer special demand | | Payment terms | FOB, CIF, CFR, L/C, or others. | | Delivery method | by sea, by air or by express service | | Lead Time | 15-30 work days after order confirmed | | Application | Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile; Home Decorating and etc. | | Notes | Special specifications and marks can be made according to customers requirements; | ## Description DIN7991 Grade 12.9 Copper Plating Hexagon Socket Countersunk Head Cap Screws Hex Socket Flat Head Cap Screw Allen Bolts Csk Alloy Steel is part of our countersunk, plow & elevator bolts range (Bolts). ### Key details - **Type:** Countersunk Head - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Material:** High Strength Steel - **Grade:** 12.9 - **Head Style:** Hexagonal - **Groove:** Hexagon - **Surface Treatment:** Copper Plating/Yellow Zinc Plating - **Connection:** Common Bolt Available configurations include material, head style, standard, grade and surface treatment. 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$1.20 – 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 DIN7991 Grade 12.9 Copper Plating Hexagon Socket Countersunk Head Cap Screws Hex Socket Flat Head Cap Screw Allen Bolts Csk Alloy Steel? The listed minimum order is 1,000 pieces, at US$1.20 – 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 DIN7991 Grade 12.9 Copper Plating Hexagon Socket Countersunk Head Cap Screws Hex Socket Flat Head Cap Screw Allen Bolts Csk Alloy Steel? Type: Countersunk Head; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: High Strength Steel; Grade: 12.9; Head Style: Hexagonal; Groove: Hexagon. 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 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 countersunk, plow & elevator bolts are available? The Countersunk, Plow & Elevator Bolts category lists 533 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/](https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/) 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, Plow & Elevator Bolts →](https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/) [![Durable Corrosion Resistant Elevator Bolt for Industrial Mining Use](https://img.engineeringhardware.com/Durable-Corrosion-Resistant-Elevator-Bolt-for-Industrial-Mining-Use.webp)](https://engineeringhardware.com/product/durable-corrosion-resistant-elevator-bolt-for-industrial-mining-use/) Countersunk, Plow & Elevator Bolts ### [Durable Corrosion Resistant Elevator Bolt for Industrial Mining Use](https://engineeringhardware.com/product/durable-corrosion-resistant-elevator-bolt-for-industrial-mining-use/) Round Head · DIN, ANSI, GB, JIS, DIN, ANSI, GB, JIS, GOST, Bsw **US$0.012 – 0.40**MOQ 500 pieces [![Countersunk Head Bolt a Flush-Fit Fastener for Smooth 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