--- title: "Carbon Steel Black Oxide Flat Head Screw" description: "Carbon Steel Black Oxide Flat Head Screw — Countersunk & Flat-Head Machine Screws. MOQ 1,000 pieces, US$0.12 – 0.60." url: https://engineeringhardware.com/product/carbon-steel-black-oxide-flat-head-screw/ source: Engineering Hardware & Fasteners --- # Carbon Steel Black Oxide Flat Head Screw [![Carbon Steel Black Oxide Flat Head Screw](https://img.engineeringhardware.com/Carbon-Steel-Black-Oxide-Flat-Head-Screw.webp)](https://img.engineeringhardware.com/Carbon-Steel-Black-Oxide-Flat-Head-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/carbon-steel-black-oxide-flat-head-screw.md) Model no. **M3 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39** | **US$0.60**1,000–9,999 pieces | **US$0.48**10,000–19,999 pieces | **US$0.36**20,000–24,999 pieces | **US$0.24**25,000–29,999 pieces | **US$0.12**30,000+ pieces | | --- | --- | --- | --- | --- | MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Round - **Standard:** DIN, ANSI, GB - **Grade:** 10.9 - **Finish:** Color-Zinc Plated - **Size:** M1.6-M52 - **Head Type:** Round - **Package Size:** 20.00cm * 20.00cm * 20.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Carbon%20Steel%20Black%20Oxide%20Flat%20Head%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fcarbon-steel-black-oxide-flat-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. | M3 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 | | Connection | Common Bolt | | Head Style | Round | | Standard | DIN, ANSI, GB | | Grade | 10.9 | | Application | Machinery, Chemical Industry, Environmental, Building | | Finish | Color-Zinc Plated | | Size | M1.6-M52 | | Lenght | 6mm-350mm | | Delivery Time | 7-30days | | Certificate | ISO9001:2008 | | Package | Cartons +Pallet | | Sampless | Free | | MOQ | 100PCS | | Product Name | Socket Countersunk Head Screw | | Service | OEM/ ODM | | Industry | Fastener | | Sample | Availible | | Payment Term | Tt 30% Deposit | | Supply Ability | 1000 Tons Per Month | | Head Type | Round | | Place of Origin | Zhejiang, China | | Transport Package | Cartons + Pallet | | Specification | m6-m64 | | Origin | Zhejiang | | Production Capacity | 1000ton/Month | | Package Size | 20.00cm * 20.00cm * 20.00cm | | Package Gross Weight | 2.000kg | | Professional Manufacturer | All of our Fastener are designed and manufactured according to buyers' specification and performance. | | Quality is guaranteed | Durability testing and critical technical design to enhance fasteners lifetime. | | Cost effective | Competitive prices with factory directly supply | | to solve your problem | Wide range of parts selection. | | Customized Ideal Fasteners | customized services according to the samples and drawings offered. | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Description Carbon Steel Black Oxide Flat Head Screw is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Round Head - **Standard:** DIN, ANSI, GB - **Material:** Carbon Steel - **Grade:** 10.9 - **Size:** M1.6-M52 - **Head Type:** Round - **Head Style:** Round - **Finish:** Color-Zinc Plated 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 1,000 pieces at US$0.12 – 0.60 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 Carbon Steel Black Oxide Flat Head Screw? The listed minimum order is 1,000 pieces, at US$0.12 – 0.60 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$0.60 for 1,000–9,999 pieces; US$0.48 for 10,000–19,999 pieces; US$0.36 for 20,000–24,999 pieces; US$0.24 for 25,000–29,999 pieces; US$0.12 for 30,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Carbon Steel Black Oxide Flat Head Screw? Type: Round Head; Standard: DIN, ANSI, GB; Material: Carbon Steel; Grade: 10.9; Size: M1.6-M52; Head Type: Round. 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 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 & 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 & Flat-Head Machine Screws →](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) [![Ifi 130 Countersunk Splitting Self-Plugging Pull Mandrel Blind Rivets 100 Deg](https://img.engineeringhardware.com/Ifi-130-Countersunk-Splitting-Self-Plugging-Pull-Mandrel-Blind-Rivets-100-Deg.webp)](https://engineeringhardware.com/product/ifi-130-countersunk-splitting-self-plugging-pull-mandrel-blind-rivets-100-deg/) Countersunk & Flat-Head Machine Screws ### [Ifi 130 Countersunk Splitting Self-Plugging Pull Mandrel Blind Rivets 100 Deg](https://engineeringhardware.com/product/ifi-130-countersunk-splitting-self-plugging-pull-mandrel-blind-rivets-100-deg/) Hexagon Head · DIN, ANSI, GB, JIS, GOST **US$0.36 – 1.20**MOQ 1,000 pieces [![High-Precision Full-Thread Vibration-Proof Flat Head DIN965 Machine Screw for Chemical 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