--- title: "Flat Countersunk Head Csk Phillips Drive Self Tapping Screws" description: "Flat Countersunk Head Csk Phillips Drive Self Tapping Screws — Self-Tapping & Thread-Forming Screws. MOQ 1 ton, US$1,200 – 1,320." url: https://engineeringhardware.com/product/flat-countersunk-head-csk-phillips-drive-self-tapping-screws/ source: Engineering Hardware & Fasteners --- # Flat Countersunk Head Csk Phillips Drive Self Tapping Screws [![Flat Countersunk Head Csk Phillips Drive Self Tapping Screws](https://img.engineeringhardware.com/Flat-Countersunk-Head-Csk-Phillips-Drive-Self-Tapping-Screws.webp)](https://img.engineeringhardware.com/Flat-Countersunk-Head-Csk-Phillips-Drive-Self-Tapping-Screws.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/flat-countersunk-head-csk-phillips-drive-self-tapping-screws.md) Model no. **4.2*13mm** | **US$1,320**1–24 tons | **US$1,200**25+ tons | | --- | --- | MOQ 1 ton · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** Round - **Standard:** DIN, GB, ANSI, BSW, JIS - **Grade:** 4.8 - **Finish:** Yellow Zinc/Galvanized - **Thread Size:** St 3.5/3.9/4.2/4.8/5.5/6.3/8 - **Package Size:** 25.00cm * 17.00cm * 15.00cm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Flat%20Countersunk%20Head%20Csk%20Phillips%20Drive%20Self%20Tapping%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fflat-countersunk-head-csk-phillips-drive-self-tapping-screws%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 | Countersunk Head | | Model NO. | 4.2*13mm | | Groove | Cross | | Connection | Hinged Bolts | | Head Style | Round | | Standard | DIN, GB, ANSI, BSW, JIS | | Grade | 4.8 | | Finish | Yellow Zinc/Galvanized | | Thread Size | St 3.5/3.9/4.2/4.8/5.5/6.3/8 | | Certification | ISO9001:2035, SGS, RoHS | | Process | Cold Heading | | Transport Package | Shipping by Sea | | Origin | Tianjin China | | Production Capacity | 2000tons/Year | | Package Size | 25.00cm * 17.00cm * 15.00cm | | Package Gross Weight | 25.500kg | | Category | [Self-Tapping & Thread-Forming Screws](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/) | ## Technical parameters | Product Name | Flat Self Tapping Screw | Thread style | Full thread, Half thread | | --- | --- | --- | --- | | Material | C1022A | Standard | DIN/GB/ANSI/BSW/JIS/GOST | | Head style | Round Head | Diameter | 3.5MM~6.3MM | | color | Gray/white/black/blue/yellow/green | Finished | Polish, Passication | | Origin | China | Transport Package | Bag/Box/Carton | | Thread density | UNC, UNF, BSW, | OEM | Provide customized services | | Size(inch) | Size(mm) | Size(inch) | Size(mm) | Size(inch) | Size(mm) | | --- | --- | --- | --- | --- | --- | | #7x1/2'' | M3.9x13 | #8x1/2'' | M4.2x13 | #10x1/2'' | M4.8x13 | | #7x5/8'' | M3.9x16 | #8x5/8'' | M4.2x16 | #10x5/8'' | M4.8x16 | | #7x3/4'' | M3.9x19 | #8x3/4'' | M4.2x19 | #10x3/4'' | M4.8x19 | | #7x1'' | M3.9x25 | #8x1'' | M4.2x25 | #10x1'' | M4.8x25 | | #7x1-1/4'' | M3.9x32 | #8x1-1/4'' | M4.2x32 | #10x1-1/4'' | M4.8x32 | | #7x1-1/2'' | M3.9x38 | #8x1-1/2'' | M4.2x38 | #10x1-1/2'' | M4.8x38 | | #7x2'' | M3.9x50 | #8x2'' | M4.2x50 | #10x2'' | M4.8x50 | | #7x2-1/2'' | M3.9x63 | #8x2-1/2'' | M4.2x63 | #10x2-1/2'' | M4.8x63 | | #7x3'' | M3.9x75 | #8x3'' | M4.2x75 | #10x3'' | M4.8x75 | | | | #8x3-1/5'' | M4.2x80 | #10x3-1/5'' | M4.8x80 | | | | #8x3-1/2'' | M4.2x90 | #10x3-1/2'' | M4.8x90 | | | | #8x4'' | M4.2x100 | #10x4'' | M4.8x100 | ## Description Flat Countersunk Head Csk Phillips Drive Self Tapping Screws is part of our self-tapping & thread-forming screws range (Screws). ### Key details - **Type:** Countersunk Head - **Standard:** DIN, GB, ANSI, BSW, JIS - **Material:** Carbon Steel - **Grade:** 4.8 - **Thread Size:** St 3.5/3.9/4.2/4.8/5.5/6.3/8 - **Head Style:** Round - **Groove:** Cross - **Finish:** Yellow Zinc/Galvanized 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 ton at US$1,200 – 1,320 per ton. 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 Flat Countersunk Head Csk Phillips Drive Self Tapping Screws? The listed minimum order is 1 ton, at US$1,200 – 1,320 per ton. 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$1,320 for 1–24 tons; US$1,200 for 25+ tons. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Flat Countersunk Head Csk Phillips Drive Self Tapping Screws? Type: Countersunk Head; Standard: DIN, GB, ANSI, BSW, JIS; Material: Carbon Steel; Grade: 4.8; Thread Size: St 3.5/3.9/4.2/4.8/5.5/6.3/8; Head Style: 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 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 & 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 Self-Tapping & Thread-Forming Screws →](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/) [![Self-Tapping Screw C1022A #6 Bugle Head Drywall Screw Black Phosphated](https://img.engineeringhardware.com/Self-Tapping-Screw-C1022A-6-Bugle-Head-Drywall-Screw-Black-Phosphated.webp)](https://engineeringhardware.com/product/self-tapping-screw-c1022a-6-bugle-head-drywall-screw-black-phosphated/) Self-Tapping & Thread-Forming Screws ### [Self-Tapping Screw C1022A #6 Bugle Head Drywall Screw Black Phosphated](https://engineeringhardware.com/product/self-tapping-screw-c1022a-6-bugle-head-drywall-screw-black-phosphated/) Carbon Steel · ISO, CE, Eta **US$0.0024 – 0.0048**MOQ 1 piece [![Painted Hex Flange Head Self-Tapping Screws W/ Washers for 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**US$1,200 – 1,320**MOQ 1 tonGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Flat%20Countersunk%20Head%20Csk%20Phillips%20Drive%20Self%20Tapping%20Screws%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fflat-countersunk-head-csk-phillips-drive-self-tapping-screws%2F)