--- title: "M2 M2.5 M3 M4 M5 Round Flat Hex Socket Head Machine Screw" description: "M2 M2.5 M3 M4 M5 Round Flat Hex Socket Head Machine Screw — Socket Head Cap & Allen Screws. Standard: DIN, GB, ANSI, JIS. MOQ 100 pieces, US$0.006 – 0.012." url: https://engineeringhardware.com/product/m2-m2-5-m3-m4-m5-round-flat-hex-socket-head-machine-screw/ source: Engineering Hardware & Fasteners --- # M2 M2.5 M3 M4 M5 Round Flat Hex Socket Head Machine Screw [![M2 M2.5 M3 M4 M5 Round Flat Hex Socket Head Machine Screw](https://img.engineeringhardware.com/M2-M2-5-M3-M4-M5-Round-Flat-Hex-Socket-Head-Machine-Screw.webp)](https://img.engineeringhardware.com/M2-M2-5-M3-M4-M5-Round-Flat-Hex-Socket-Head-Machine-Screw.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/m2-m2-5-m3-m4-m5-round-flat-hex-socket-head-machine-screw.md) Model no. **EP-S11** | **US$0.012**100–9,999 pieces | **US$0.0096**10,000–99,999 pieces | **US$0.006**100,000+ pieces | | --- | --- | --- | MOQ 100 pieces · Final price confirmed in your quote - **Material:** Stainless Steel/Carbon Steel - **Head Style:** Csk Flat Head Socket Machine Screw - **Standard:** DIN, GB, ANSI, JIS - **Grade:** A2-70, A4-80, 4.8/8.8/10.9/12.9 - **Screw Material:** Stainless Steel/Carbon Steel - **Surface:** Passivation, Plain, Zinc Plated, Black - **Length:** 5-200mm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20M2%20M2.5%20M3%20M4%20M5%20Round%20Flat%20Hex%20Socket%20Head%20Machine%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fm2-m2-5-m3-m4-m5-round-flat-hex-socket-head-machine-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/Carbon Steel | | Type | Countersunk Head | | Model NO. | EP-S11 | | Groove | Hexagon | | Connection | Common Bolt | | Head Style | Csk Flat Head Socket Machine Screw | | Standard | DIN, GB, ANSI, JIS | | Grade | A2-70, A4-80, 4.8/8.8/10.9/12.9 | | Delivery Time | 3-15 Days | | Sample | Free | | Payment Term | T/T, L/C, Paypal, West Union | | Certification | ISO, RoHS, SGS, TUV | | Feature | Anti-Corrosion | | Screw Material | Stainless Steel/Carbon Steel | | Surface | Passivation, Plain, Zinc Plated, Black | | Length | 5-200mm | | Transport Package | Carton Box / Bag +Pallet | | Specification | M2 -M30 | | Origin | Jiangsu, China | | HS Code | 73181500 | | Production Capacity | 500 Tons/Month | | Category | [Socket Head Cap & Allen Screws](https://engineeringhardware.com/fastener-products/screws/socket-head-cap-allen-screws/) | ## Technical parameters | Item | CSK Flat Head Countersunk Socket Machine Screw | | --- | --- | | Size | M2-M30 | | Length | 5-200mm | | Material | Stainless Steel, Carbon Steel | | Surface | Plain, Passivation, Zinc plated, Galvanized, Black, or according to your requirement | | Packaging | Carton Box / Bag +Pallet | | Standard | DIN, GB,ASME/ANSI,JIS, BSW, ISO | | Delivery Time | 3-15 days | | OEM | Available | | Bolt | Screw | Nut | Washer | | --- | --- | --- | --- | | Rivet | Anchor | Pin | Hex Bolt | | Drywall Screw | Hex Nut | Wedge Anchor | Flat Washer | ## Description M2 M2.5 M3 M4 M5 Round Flat Hex Socket Head Machine Screw is part of our socket head cap & allen screws range (Screws). ### Key details - **Type:** Countersunk Head - **Standard:** DIN, GB, ANSI, JIS - **Material:** Stainless Steel/Carbon Steel - **Grade:** A2-70, A4-80, 4.8/8.8/10.9/12.9 - **Length:** 5-200mm - **Head Style:** Csk Flat Head Socket Machine Screw - **Groove:** Hexagon - **Connection:** Common Bolt Available configurations include material, head style, standard, grade and screw material. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 100 pieces at US$0.006 – 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 M2 M2.5 M3 M4 M5 Round Flat Hex Socket Head Machine Screw? The listed minimum order is 100 pieces, at US$0.006 – 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 100–9,999 pieces; US$0.0096 for 10,000–99,999 pieces; US$0.006 for 100,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of M2 M2.5 M3 M4 M5 Round Flat Hex Socket Head Machine Screw? Type: Countersunk Head; Standard: DIN, GB, ANSI, JIS; Material: Stainless Steel/Carbon Steel; Grade: A2-70, A4-80, 4.8/8.8/10.9/12.9; Length: 5-200mm; Head Style: Csk Flat Head Socket Machine Screw. 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 screw material. 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/) [![M5 Grade 4.8 Zinc Plated Galvanized Steel Hex Socket Countersunk Head Screw DIN7991](https://img.engineeringhardware.com/M5-Grade-4-8-Zinc-Plated-Galvanized-Steel-Hex-Socket-Countersunk-Head-Screw-DIN7991.webp)](https://engineeringhardware.com/product/m5-grade-4-8-zinc-plated-galvanized-steel-hex-socket-countersunk-head-screw-din7991/) Socket Head Cap & Allen Screws ### [M5 Grade 4.8 Zinc Plated Galvanized Steel Hex Socket Countersunk Head Screw DIN7991](https://engineeringhardware.com/product/m5-grade-4-8-zinc-plated-galvanized-steel-hex-socket-countersunk-head-screw-din7991/) Round Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.012 – 0.11**MOQ 1,000 pieces [![High Quality Food Furniture Socket Head Cross Hexagon Confirmat 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