--- title: "A2 A4 Stainless Steel Cross Countersunk Self Tapping Screw" description: "A2 A4 Stainless Steel Cross Countersunk Self Tapping Screw — Self-Tapping & Thread-Forming Screws. MOQ 10,000 pieces, US$0.012 – 0.12." url: https://engineeringhardware.com/product/a2-a4-stainless-steel-cross-countersunk-self-tapping-screw/ source: Engineering Hardware & Fasteners --- # A2 A4 Stainless Steel Cross Countersunk Self Tapping Screw [![A2 A4 Stainless Steel Cross Countersunk Self Tapping Screw](https://img.engineeringhardware.com/A2-A4-Stainless-Steel-Cross-Countersunk-Self-Tapping-Screw.webp)](https://img.engineeringhardware.com/A2-A4-Stainless-Steel-Cross-Countersunk-Self-Tapping-Screw.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Screws › Self-Tapping & Thread-Forming Screws](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/a2-a4-stainless-steel-cross-countersunk-self-tapping-screw.md) Model no. **Hysls0215** US$0.012 – 0.12 / piece MOQ 10,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Countersunk (Csk) / Counter Sunk Bolt - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Grade:** A2 / A4 - **Customized:** Yes - **Thread Specification:** Self-Tapping Screw Thread (St Series) - **Surface Treatment:** Black Phosphate, Gray Phosphate, Nickel, Ruspert - **Tolerance Grade:** ISO 2768 Fastener Tolerance Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20A2%20A4%20Stainless%20Steel%20Cross%20Countersunk%20Self%20Tapping%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fa2-a4-stainless-steel-cross-countersunk-self-tapping-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 | Countersunk Head Cross Self Tapping Screws | | Model NO. | Hysls0215 | | Groove | Cross | | Connection | Common Bolt | | Head Style | Countersunk (Csk) / Counter Sunk Bolt | | Standard | DIN, GB, ANSI, BSW, JIS, GOST | | Grade | A2 / A4 | | Customized | Yes | | Drawing | Yes | | Application | General Fastening, Machinery, Construction, Wood | | Process | Cold Forging, CNC Precision Machining | | Service | OEM Available, Free Samples, Test Reports, 2-Year | | Thread Specification | Self-Tapping Screw Thread (St Series) | | Surface Treatment | Black Phosphate, Gray Phosphate, Nickel, Ruspert | | Tolerance Grade | ISO 2768 Fastener Tolerance | | Corrosion Resistance | Anti-Rust, High Corrosion Resistance | | Knurl Specification | N/a | | Key Features | Cross Recess Drive, Countersunk Head | | Transport Package | Polybag+Export Strong Carton | | Specification | ST2.9~ST6.3, ST4.8~ST6.9 | | Origin | China | | HS Code | 7318160000 | | Production Capacity | 100ton/Month | | Package Size | 30.00cm * 20.00cm * 20.00cm | | Package Gross Weight | 0.500kg | | Non-standard parts | 15-25days | | Category | [Self-Tapping & Thread-Forming Screws](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/) | ## Technical parameters | Item | Details | | --- | --- | | Full Product Name | Stainless Steel A2/A4 Countersunk (CSK) Head Cross Recess Self-Tapping Screw | | Material | Stainless Steel | | Mechanical Grade | A2 / A4 (Stainless Steel Grades) | | Drive Recess Type | Cross (Phillips) Recess | | Head Shape | Countersunk (CSK / Flat) Head | | Fastener Category | Common Bolt / Self-Tapping Screw | | Applicable Standards | DIN, GB, ANSI, BSW, JIS, GOST | | Standard Sizes | ST2.9~ST6.3, ST4.8~ST6.9 (ST series self-tapping thread sizes) | | Customization | Yes, custom sizes available | | Thread Specification | Self-Tapping Screw Thread (ST Series) | | Manufacturing Process | Cold Forging, CNC Precision Machining | | Available Services | OEM Available, Free Samples, Test Reports Available | | Surface Treatments | Black Phosphate, Gray Phosphate, Nickel Plated (multi-coat options) | | Tolerance Grade | ISO 2768 Fastener Tolerance | | Corrosion Resistance | Anti-Rust, High Corrosion Resistance (Stainless Steel base material) | | Knurl Specification | N/a | | Key Features | Cross Recess Drive, Countersunk Head, A2/A4 Stainless Steel, High Corrosion Resistance | | Applications | General Fastening, General Machinery, Construction | | Packaging | Polybag + Export Strong Carton | | Origin | China | ## Description A2 A4 Stainless Steel Cross Countersunk Self Tapping Screw is part of our self-tapping & thread-forming screws range (Screws). ### Key details - **Type:** Countersunk Head Cross Self Tapping Screws - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Material:** Stainless Steel - **Grade:** A2 / A4 - **Head Style:** Countersunk (Csk) / Counter Sunk Bolt - **Groove:** Cross - **Surface Treatment:** Black Phosphate, Gray Phosphate, Nickel, Ruspert - **Connection:** Common Bolt Available configurations include material, head style, standard, grade and customized. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 10,000 pieces at US$0.012 – 0.12 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 A2 A4 Stainless Steel Cross Countersunk Self Tapping Screw? The listed minimum order is 10,000 pieces, at US$0.012 – 0.12 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 A2 A4 Stainless Steel Cross Countersunk Self Tapping Screw? Type: Countersunk Head Cross Self Tapping Screws; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Stainless Steel; Grade: A2 / A4; Head Style: Countersunk (Csk) / Counter Sunk Bolt; Groove: Cross. 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 customized. 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 self-tapping & thread-forming screws are available? The Self-Tapping & Thread-Forming Screws category lists 4,881 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-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 Self-Tapping & Thread-Forming Screws →](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/) [![Durable Hexagonal Flange Self-Tapping Screws for High-Quality Industrial Applications](https://img.engineeringhardware.com/Durable-Hexagonal-Flange-Self-Tapping-Screws-for-High-Quality-Industrial-Applications.webp)](https://engineeringhardware.com/product/durable-hexagonal-flange-self-tapping-screws-for-high-quality-industrial-applications/) Self-Tapping & Thread-Forming Screws ### [Durable Hexagonal Flange Self-Tapping Screws for High-Quality Industrial Applications](https://engineeringhardware.com/product/durable-hexagonal-flange-self-tapping-screws-for-high-quality-industrial-applications/) GB, EN, China GB Code, JIS Code, TEMA, ASME · Fastener, Auto and Motor… **US$0.084 – 0.12**MOQ 100 pieces [![ASME B Cross Recessed Pan Head 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