--- title: "Premium Hexagon Socket Countersunk Head Screws for Secure Fastening" description: "Premium Hexagon Socket Countersunk Head Screws for Secure Fastening — Countersunk & Flat-Head Machine Screws. MOQ 100 boxes, US$0.12." url: https://engineeringhardware.com/product/premium-hexagon-socket-countersunk-head-screws-for-secure-fastening/ source: Engineering Hardware & Fasteners --- # Premium Hexagon Socket Countersunk Head Screws for Secure Fastening [![Premium Hexagon Socket Countersunk Head Screws for Secure Fastening](https://img.engineeringhardware.com/Premium-Hexagon-Socket-Countersunk-Head-Screws-for-Secure-Fastening.webp)](https://img.engineeringhardware.com/Premium-Hexagon-Socket-Countersunk-Head-Screws-for-Secure-Fastening.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/premium-hexagon-socket-countersunk-head-screws-for-secure-fastening.md) Model no. **M4-M30** US$0.12 / box MOQ 100 boxes · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS, BSW - **Grade:** 8.8 - **Finish:** Black Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Premium%20Hexagon%20Socket%20Countersunk%20Head%20Screws%20for%20Secure%20Fastening%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fpremium-hexagon-socket-countersunk-head-screws-for-secure-fastening%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 | Hexagon Head | | Model NO. | M4-M30 | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS, BSW | | Grade | 8.8 | | Application | Machinery, Chemical Industry, Environmental, Building | | Finish | Black | | Transport Package | Box | | Specification | m3-m5 | | Origin | Hebei Handan | | Production Capacity | 500000 | | Stainless Steel | SS201, SS303, SS304, SS316, SS410, SS420 | | Carbon Steel | 4.8, 6.8, 8.8, 10.9, 12.9 | | Titanium | GR1-GR5 | | ISO9001 | 2008, SGS testing report & RoHS | | Category | [Countersunk & Flat-Head Machine Screws](https://engineeringhardware.com/fastener-products/screws/countersunk-flat-head-machine-screws/) | ## Technical parameters | Product Name | Hex Socket Head Cap Screw with Grade 12.9 Black | | --- | --- | | Material | Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420 Carbon Steel: 4.8, 6.8, 8.8, 10.9, 12.9 Titanium: GR1-GR5 Aluminum,Brass,etc. | | Size | 4.8/ 8.8/ 10.9/ 12.9 Ect | | Standard | ISO,GB, DIN, JIS, ANSI, BSW,ASME | | Certificate | ISO9001:2008, SGS testing report & RoHS | | Finishing | Zn- Plated, Ni-plated, Tin-Plated, Radiant Plated, Passivated, Brass plated, Cd- plated, Phosphate Anodize, Cr-plated, Black Oxide etc | | Heat Treatment | Tempering,Hardening,Spheroidizing,Stress Relieving etc | | Package | General export package, or according to customer's requirement | | Delivery time | About 7 -15 days after all details confirmed and able to offering fast delivery for urgent order | | Customer Service | Replacement at all our cost for rejected products if the part does not match with the PO drawings | | FAQ | | --- | | Threaded rod, Hex bolt, Hex Nut, Flat washer, Screws, Anchors, Blind rivet, etc | | It depends on sizes, Usually 200 kgs to 1000 kgs. | | From 7 days to 75 days, depends on your sizes and quantity. | | T/T, LC, DP, etc. | | Due to a lot of kinds of fasteners, we quote prices accoridng to sizes, quantity, packing only. | | Sure, free sampls will be provided | ## Description Premium Hexagon Socket Countersunk Head Screws for Secure Fastening is part of our countersunk & flat-head machine screws range (Screws). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, GB, JIS, BSW - **Material:** Carbon Steel - **Grade:** 8.8 - **Head Style:** Hexagonal - **Finish:** Black - **Connection:** Common Bolt - **Application:** Machinery, Chemical Industry, Environmental, Building 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 100 boxes at US$0.12 per box. 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 Premium Hexagon Socket Countersunk Head Screws for Secure Fastening? The listed minimum order is 100 boxes, at US$0.12 per box. 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 Premium Hexagon Socket Countersunk Head Screws for Secure Fastening? Type: Hexagon Head; Standard: DIN, ANSI, GB, JIS, BSW; Material: Carbon Steel; Grade: 8.8; Head Style: Hexagonal; Finish: Black. 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/) [![Steel Rivet Copper Rivet Pop Rivets with Factory Price Plastic Rivets Stainless Steel Rivets Blind Rivet](https://img.engineeringhardware.com/Steel-Rivet-Copper-Rivet-Pop-Rivets-with-Factory-Price-Plastic-Rivets-Stainless-Steel-Rivets-Blind-Rivet.webp)](https://engineeringhardware.com/product/steel-rivet-copper-rivet-pop-rivets-with-factory-price-plastic-rivets-stainless/) Countersunk & Flat-Head Machine Screws ### [Steel Rivet Copper Rivet Pop Rivets with Factory Price Plastic Rivets Stainless Steel Rivets Blind Rivet](https://engineeringhardware.com/product/steel-rivet-copper-rivet-pop-rivets-with-factory-price-plastic-rivets-stainless/) Countersunk Head · Steel **US$0.006**MOQ 100,000 pieces [![Hex Nuts Flange Nuts Square Nuts 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