--- title: "Automotive Stainless Steel DIN7991 Socket Hex Flat Head Cap Screw" description: "Automotive Stainless Steel DIN7991 Socket Hex Flat Head Cap Screw — Countersunk & Flat-Head Machine Screws. MOQ 30,000 pieces, US$0.012." url: https://engineeringhardware.com/product/automotive-stainless-steel-din7991-socket-hex-flat-head-cap-screw/ source: Engineering Hardware & Fasteners --- # Automotive Stainless Steel DIN7991 Socket Hex Flat Head Cap Screw [![Automotive Stainless Steel DIN7991 Socket Hex Flat Head Cap Screw](https://img.engineeringhardware.com/Automotive-Stainless-Steel-DIN7991-Socket-Hex-Flat-Head-Cap-Screw.webp)](https://img.engineeringhardware.com/Automotive-Stainless-Steel-DIN7991-Socket-Hex-Flat-Head-Cap-Screw.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/automotive-stainless-steel-din7991-socket-hex-flat-head-cap-screw.md) Model no. **DIN7991** US$0.012 / piece MOQ 30,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Standard:** DIN, GB, ANSI, BSW, JIS, ISO - **Grade:** 10.9 - **Size 1:** M3-M20 - **Size 2:** 1/4-3/4" - **Materials:** 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%20Automotive%20Stainless%20Steel%20DIN7991%20Socket%20Hex%20Flat%20Head%20Cap%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fautomotive-stainless-steel-din7991-socket-hex-flat-head-cap-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 | Stainless Steel | | Type | Screw | | Model NO. | DIN7991 | | Groove | Hexagon | | Connection | Common Bolt | | Standard | DIN, GB, ANSI, BSW, JIS, ISO | | Grade | 10.9 | | Product Name | DIN7991 Socket Flat Screw | | Size 1 | M3-M20 | | Size 2 | 1/4-3/4" | | Materials | Stainless Steel | | Transport Package | Neutral Packing | | Specification | M3-M20 | | Origin | China | | HS Code | 731815 | | Production Capacity | 10 Million/Month | | Our main products' range include | Drop-in Anchor, Drop in anchor with Lip, | | 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 agent ,it can help you ship the goods, if you have own agent, that also is OK. | | Bulk order | 15-30 working days(Standard). | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## 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), 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 Automotive Stainless Steel DIN7991 Socket Hex Flat Head Cap Screw is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Screw - **Standard:** DIN, GB, ANSI, BSW, JIS, ISO - **Material:** Stainless Steel - **Grade:** 10.9 - **Groove:** Hexagon - **Connection:** Common Bolt - **Product Name:** DIN7991 Socket Flat Screw - **Size 1:** M3-M20 Available configurations include material, standard, grade, size 1 and size 2. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 30,000 pieces at US$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 Automotive Stainless Steel DIN7991 Socket Hex Flat Head Cap Screw? The listed minimum order is 30,000 pieces, at US$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. ### What are the main specifications of Automotive Stainless Steel DIN7991 Socket Hex Flat Head Cap Screw? Type: Screw; Standard: DIN, GB, ANSI, BSW, JIS, ISO; Material: Stainless Steel; Grade: 10.9; Groove: Hexagon; Connection: Common 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, standard, grade, size 1 and size 2. 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/) [![China Wholesale High Quality DIN6923 Stainless Steel Natural M5-M20 Flange Nut](https://img.engineeringhardware.com/China-Wholesale-High-Quality-DIN6923-Stainless-Steel-Natural-M5-M20-Flange-Nut.webp)](https://engineeringhardware.com/product/china-wholesale-high-quality-din6923-stainless-steel-natural-m5-m20-flange-nut/) Countersunk & Flat-Head Machine Screws ### [China Wholesale High Quality DIN6923 Stainless Steel Natural M5-M20 Flange Nut](https://engineeringhardware.com/product/china-wholesale-high-quality-din6923-stainless-steel-natural-m5-m20-flange-nut/) Countersunk Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012 – 24.00**MOQ 500 pieces [![Steel Blind Rivets Knock Flat Head Solid Rivets GB109 Pop Blind Rivet Type for 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