--- title: "China Manufacturer Quality Self Tapping Screw Duplex" description: "China Manufacturer Quality Self Tapping Screw Duplex — Self-Tapping & Thread-Forming Screws. MOQ 5 tons, US$1,116 – 1,176." url: https://engineeringhardware.com/product/china-manufacturer-quality-self-tapping-screw-duplex/ source: Engineering Hardware & Fasteners --- # China Manufacturer Quality Self Tapping Screw Duplex [![China Manufacturer Quality Self Tapping Screw Duplex](https://img.engineeringhardware.com/China-Manufacturer-Quality-Self-Tapping-Screw-Duplex.webp)](https://img.engineeringhardware.com/China-Manufacturer-Quality-Self-Tapping-Screw-Duplex.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/china-manufacturer-quality-self-tapping-screw-duplex.md) US$1,116 – 1,176 / ton MOQ 5 tons · Final price confirmed in your quote - **Material:** Carbon Steel - **Standard:** GB - **Thread:** Fine Thread / Coarse Thread - **Surface Treatment:** Zinc Plated/Nick Plated/Black Phosphated Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20China%20Manufacturer%20Quality%20Self%20Tapping%20Screw%20Duplex%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fchina-manufacturer-quality-self-tapping-screw-duplex%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 | Material | Carbon Steel | | --- | --- | | Groove | Cross | | Connection | Common Bolt | | Standard | GB | | Tail | Self-Drilling/Self-Tapping | | Thread | Fine Thread / Coarse Thread | | Surface Treatment | Zinc Plated/Nick Plated/Black Phosphated | | Application | Wood, Drywall, Gypsum Board | | Transport Package | 500g/Bag, 1kg/Bag, 5kg/Box, or Bulk N.W.20kgs/CTN | | Specification | All size, M3.5X13-M4.8X200 / 6#x5/8~ 14#X3'' | | Origin | China | | HS Code | 73170000 | | Production Capacity | 1000tons Per Month | | Main products list of our company | all kinds of steel nails, concrete nails and roofing screws, black or hot dipped galvanized wires, galvanized or alu-zinc steel coils/sheets, fibreglass screen, aluminum screen, steel strand etc. | | Category | [Self-Tapping & Thread-Forming Screws](https://engineeringhardware.com/fastener-products/screws/self-tapping-thread-forming-screws/) | ## Technical parameters | Product name | Drywall Screw | | --- | --- | | Surface Treatment | Black/Gray Phosphate or Zinc Plated , Nick Plated | | Material | Carbon steel 1022 hardened or stainless steel | | Tail Type | Self-Drilling,Self-Tapping | | Length | 11-150mm | | Diameter | M3.5-M6.3/#6-#14 | | Salt mist time | 24-1000hours | | Usage | Wood, Drywall, Gypsum Board | | Standard | ISO9001/ GB/T701-2008 | | Original | Tianjin, China | | Packing Way | 500g/bag, 50bags/Ctn; 1kg/bag, 20bags/Ctn; 5kg/box, 4boxes/Ctn; 10kg/plastic boxes, 40boxes/pallet; 20kg/plastic boxes, 40boxes/pallet; bulk N.W.20kgs/Ctn, 48ctns/pallet. | | Container packing - package details | | --- | | Plastic bag | Boxes | Plastic box | | --- | --- | --- | | Bulk packge | Ton bag | Weaving bag | | --- | --- | --- | | About Our Company | | --- | | FAQ | | --- | | Other products | | --- | ## Description China Manufacturer Quality Self Tapping Screw Duplex is part of our self-tapping & thread-forming screws range (Screws). ### Key details - **Standard:** GB - **Material:** Carbon Steel - **Thread:** Fine Thread / Coarse Thread - **Groove:** Cross - **Surface Treatment:** Zinc Plated/Nick Plated/Black Phosphated - **Connection:** Common Bolt - **Application:** Wood, Drywall, Gypsum Board - **Tail:** Self-Drilling/Self-Tapping Available configurations include material, standard, thread and surface treatment. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 5 tons at US$1,116 – 1,176 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 China Manufacturer Quality Self Tapping Screw Duplex? The listed minimum order is 5 tons, at US$1,116 – 1,176 per ton. 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 China Manufacturer Quality Self Tapping Screw Duplex? Standard: GB; Material: Carbon Steel; Thread: Fine Thread / Coarse Thread; Groove: Cross; Surface Treatment: Zinc Plated/Nick Plated/Black Phosphated; Connection: Common Bolt. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, standard, thread and surface treatment. 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/) [![Double/Single Countersunk Self Tapping Chipboard Screws](https://img.engineeringhardware.com/Double-Single-Countersunk-Self-Tapping-Chipboard-Screws.webp)](https://engineeringhardware.com/product/double-single-countersunk-self-tapping-chipboard-screws/) Self-Tapping & Thread-Forming Screws ### [Double/Single Countersunk Self Tapping Chipboard Screws](https://engineeringhardware.com/product/double-single-countersunk-self-tapping-chipboard-screws/) Round Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.012 – 0.12**MOQ 1,000 pieces [![Hot Sale Factory Direct IATF16949 Cross Recess Pan Head Self Tapping Screws Swch18A M3-M6 for Automotive Industry](https://img.engineeringhardware.com/Hot-Sale-Factory-Direct-IATF16949-Cross-Recess-Pan-Head-Self-Tapping-Screws-Swch18A-M3-M6-for-Automotive-Industry.webp)](https://engineeringhardware.com/product/hot-sale-factory-direct-iatf16949-cross-recess-pan-head-self-tapping-screws-swch18a/) Self-Tapping & Thread-Forming Screws ### [Hot Sale Factory Direct IATF16949 Cross Recess Pan Head Self Tapping Screws Swch18A M3-M6 for Automotive Industry](https://engineeringhardware.com/product/hot-sale-factory-direct-iatf16949-cross-recess-pan-head-self-tapping-screws-swch18a/) Auto Fasteners · DIN, GB, ISO, ANSI/ASTM, BS, Bsw, JIS etc. **US$0.024 – 0.036**MOQ 20,000 pieces [![M14*1.5*M16*1.5*L9.4mm Spark Plug Self Tapping Screw Sleeve](https://img.engineeringhardware.com/M14-1-5-M16-1-5-L9-4mm-Spark-Plug-Self-Tapping-Screw-Sleeve.webp)](https://engineeringhardware.com/product/m14-1-5-m16-1-5-l9-4mm-spark-plug-self-tapping-screw-sleeve/) Self-Tapping & Thread-Forming Screws ### [M14*1.5*M16*1.5*L9.4mm Spark Plug Self Tapping Screw Sleeve](https://engineeringhardware.com/product/m14-1-5-m16-1-5-l9-4mm-spark-plug-self-tapping-screw-sleeve/) Common · Carbon Steel **US$0.12 – 0.72**MOQ 100 pieces [![DIN 7976 SUS 304 316 Stainless Steel Self-Tapping Screw Hex Head Screw](https://img.engineeringhardware.com/DIN-7976-SUS-304-316-Stainless-Steel-Self-Tapping-Screw-Hex-Head-Screw.webp)](https://engineeringhardware.com/product/din-7976-sus-304-316-stainless-steel-self-tapping-screw-hex-head-screw/) Self-Tapping & Thread-Forming Screws ### [DIN 7976 SUS 304 316 Stainless Steel Self-Tapping Screw Hex Head Screw](https://engineeringhardware.com/product/din-7976-sus-304-316-stainless-steel-self-tapping-screw-hex-head-screw/) Hexagon Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.0574 – 2.40**MOQ 1,000 pieces [![Allen Hex Socket Cap Head Self Tapping Screws Made of Stainless Steel](https://img.engineeringhardware.com/Allen-Hex-Socket-Cap-Head-Self-Tapping-Screws-Made-of-Stainless-Steel.webp)](https://engineeringhardware.com/product/allen-hex-socket-cap-head-self-tapping-screws-made-of-stainless-steel/) Self-Tapping & Thread-Forming Screws ### [Allen Hex Socket Cap Head Self Tapping Screws Made of Stainless Steel](https://engineeringhardware.com/product/allen-hex-socket-cap-head-self-tapping-screws-made-of-stainless-steel/) Stainless Steel · ISO, GS, RoHS, CE **US$0.018**MOQ 100,000 pieces [![Pan Head Screw Pozi Flange Self Tapping Screws with Collar Cutting Nail](https://img.engineeringhardware.com/Pan-Head-Screw-Pozi-Flange-Self-Tapping-Screws-with-Collar-Cutting-Nail.webp)](https://engineeringhardware.com/product/pan-head-screw-pozi-flange-self-tapping-screws-with-collar-cutting-nail/) Self-Tapping & Thread-Forming Screws ### [Pan Head Screw Pozi Flange Self Tapping Screws with Collar Cutting Nail](https://engineeringhardware.com/product/pan-head-screw-pozi-flange-self-tapping-screws-with-collar-cutting-nail/) Hexagon Head · DIN, ANSI, GB, JIS, BSW **US$0.12 – 1.20**MOQ 1,000 pieces [![China Factory Pan Head Phillips Type F Thread Cutting Machine Screw](https://img.engineeringhardware.com/China-Factory-Pan-Head-Phillips-Type-F-Thread-Cutting-Machine-Screw.webp)](https://engineeringhardware.com/product/china-factory-pan-head-phillips-type-f-thread-cutting-machine-screw/) Self-Tapping & Thread-Forming Screws ### [China Factory Pan Head Phillips Type F Thread Cutting Machine Screw](https://engineeringhardware.com/product/china-factory-pan-head-phillips-type-f-thread-cutting-machine-screw/) Pan Head · DIN, GB, ANSI, BSW, JIS, GOST **US$0.006 – 6.00**MOQ 50,000 pieces [![6.3*25 Versatile 316 Stainless Steel Marine Hex Washer Head Self Tapping Screw with OEM Capacity](https://img.engineeringhardware.com/6-3-25-Versatile-316-Stainless-Steel-Marine-Hex-Washer-Head-Self-Tapping-Screw-with-OEM-Capacity.webp)](https://engineeringhardware.com/product/6-3-25-versatile-316-stainless-steel-marine-hex-washer-head-self-tapping-screw-with/) Self-Tapping & Thread-Forming Screws ### [6.3*25 Versatile 316 Stainless Steel Marine Hex Washer Head Self Tapping Screw with OEM Capacity](https://engineeringhardware.com/product/6-3-25-versatile-316-stainless-steel-marine-hex-washer-head-self-tapping-screw-with/) Stainless Steel · for Installing Various Metal Structures. **US$0.006 – 0.06**MOQ 10,000 pieces **US$1,116 – 1,176**MOQ 5 tonsGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20China%20Manufacturer%20Quality%20Self%20Tapping%20Screw%20Duplex%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fchina-manufacturer-quality-self-tapping-screw-duplex%2F)