--- title: "Bulk Supply Self Drilling Screws for Construction and Engineering" description: "Bulk Supply Self Drilling Screws for Construction and Engineering — Self-Drilling & Tek Screws. Material: Carbon Steel. MOQ 10,000 pieces, US$0.0156 – 0.0216." url: https://engineeringhardware.com/product/bulk-supply-self-drilling-screws-for-construction-and-engineering/ source: Engineering Hardware & Fasteners --- # Bulk Supply Self Drilling Screws for Construction and Engineering [![Bulk Supply Self Drilling Screws for Construction and Engineering](https://img.engineeringhardware.com/Bulk-Supply-Self-Drilling-Screws-for-Construction-and-Engineering.webp)](https://img.engineeringhardware.com/Bulk-Supply-Self-Drilling-Screws-for-Construction-and-Engineering.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Screws › Self-Drilling & Tek Screws](https://engineeringhardware.com/fastener-products/screws/self-drilling-tek-screws/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/bulk-supply-self-drilling-screws-for-construction-and-engineering.md) Model no. **ST4.2-ST4.8*13-25** | **US$0.0216**10,000–99,999 pieces | **US$0.018**100,000–499,999 pieces | **US$0.0156**500,000+ pieces | | --- | --- | --- | MOQ 10,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Shape of Head:** Round - **Surface Finishing:** Zinc Plated - **Customized:** Customized - **Product Grade:** Level a - **Package Size:** 10.00cm * 8.00cm * 4.00cm - **Customized Ideal Fasteners:** Unique requirements are met with unique solutions. Our bespoke services are meticulously tailored to your specifications, incorporating the samples and drawings you provide for precise results. Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Bulk%20Supply%20Self%20Drilling%20Screws%20for%20Construction%20and%20Engineering%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fbulk-supply-self-drilling-screws-for-construction-and-engineering%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 | | Shape of Head | Round | | Model NO. | ST4.2-ST4.8*13-25 | | Surface Finishing | Zinc Plated | | Certification | ISO, GS, RoHS, CE | | Customized | Customized | | Application Scenario | Machinery, Furniture,Buildings, etc | | Delivery Time | 10-30 Days | | Export Market | Global | | Product Grade | Level a | | Transport Package | Bag and Tray | | Specification | ST4.2×13 mm | | Origin | Guangdong, China | | Production Capacity | 300 Tons Per Month | | Package Size | 10.00cm * 8.00cm * 4.00cm | | Package Gross Weight | 5.000kg | | Lead Time | 12 days (1 - 300000 Pieces) 18 days (300001 - 500000 Pieces) To be negotiated ( > 500000 Pieces) | | Our Exceptional Services | Step into a world of extraordinary experiences with our unparalleled offerings that redefine industry standards and elevate customer satisfaction to new heights. | | Professional Manufacturers | Our fasteners are an epitome of craftsmanship, meticulously designed to meet your exact specifications with unwavering precision, guaranteeing performance excellence you can rely on. | | Guaranteed Quality | Experience exceptional longevity and unwavering reliability. Our fasteners undergo stringent durability tests and are manufactured with impeccable technical accuracy, ensuring top-tier excellence. | | Cost-Effective Excellence | Benefit from direct factory supply with remarkable pricing. With over 30 years of production expertise, we provide unmatched solutions perfectly tailored to your specific needs. | | Customized Ideal Fasteners | Unique requirements are met with unique solutions. Our bespoke services are meticulously tailored to your specifications, incorporating the samples and drawings you provide for precise results. | | Plastic, aluminum, iron, stainless steel | 201, 304,316 | | PRODUCT DISPLAY | Presenting our superior fasteners, a blend of quality and innovation that stands out in the market. | | State-of-the-Art Production Workshop | Immerse yourself in our cutting-edge facilities, where high-quality products are brought to life through innovative production techniques. | | Category | [Self-Drilling & Tek Screws](https://engineeringhardware.com/fastener-products/screws/self-drilling-tek-screws/) | ## Technical parameters | The company's main product classification | | | --- | --- | | material | Plastic, aluminum, iron, stainless steel:201, 304,316 | | standard | DIN,ASTM/ANSI JIS EN ISO,AS,GB | | hardness | Carbon steel 4.8, stainless steel A2-70, carbon steel 8.8, carbon steel 12.9 and so on | | Head part | Round head, half round head, flat head (countersunk head), half countersunk head, cylindrical head, large flat head, flat head, B head, belt medium | | groove type | Cross, one word, eleven words, inner hexagon, outer hexagon, outer hexagon inside cross, etc | | surface treatment | Color zinc, white zinc, blue zinc, nickel plating, oxidation black, chrome plating, copper plating, imitation gold, etc | | dental classification | Machine thread teeth, self tapping teeth, double head teeth, one machine one tapping teeth, whole teeth, half teeth, smooth rod, etc | | Product classification | Screws, bolts, nuts, gaskets, non-standard shapes, hardware tools,Fasteners and connectors, etc | | shape | Hexagonal, round, butterfly, hook, claw, plum, M font, L shape, U shape, ring, etc | | processing points | Add hard, car parts, pit, tip, flat tip, foot (milling foot), rubbing, environmental protection, salt spray test, stamping parts, etc | | More than 30 years of professional production experience, Custom and free sample service available | | ## Description Bulk Supply Self Drilling Screws for Construction and Engineering is part of our self-drilling & tek screws range (Screws). ### Key details - **Material:** Carbon Steel - **Certification:** ISO, GS, RoHS, CE - **Shape of Head:** Round - **Surface Finishing:** Zinc Plated - **Application Scenario:** Machinery, Furniture,Buildings, etc - **Export Market:** Global - **Product Grade:** Level a - **Plastic, aluminum, iron, stainless steel:** 201, 304,316 Available configurations include material, shape of head, surface finishing, customized and product grade. 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$0.0156 – 0.0216 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 Bulk Supply Self Drilling Screws for Construction and Engineering? The listed minimum order is 10,000 pieces, at US$0.0156 – 0.0216 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$0.0216 for 10,000–99,999 pieces; US$0.018 for 100,000–499,999 pieces; US$0.0156 for 500,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Bulk Supply Self Drilling Screws for Construction and Engineering? Material: Carbon Steel; Certification: ISO, GS, RoHS, CE; Shape of Head: Round; Surface Finishing: Zinc Plated; Application Scenario: Machinery, Furniture,Buildings, etc; Export Market: Global. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include material, shape of head, surface finishing, customized and product grade. 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-drilling & tek screws are available? The Self-Drilling & Tek Screws category lists 5,114 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/screws/self-drilling-tek-screws/](https://engineeringhardware.com/fastener-products/screws/self-drilling-tek-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-Drilling & Tek Screws →](https://engineeringhardware.com/fastener-products/screws/self-drilling-tek-screws/) [![China Manufacturers Carbon Steel Hex Washer Head Self Drilling Roofing Screw Hexagonal Self Drilling Screws](https://img.engineeringhardware.com/China-Manufacturers-Carbon-Steel-Hex-Washer-Head-Self-Drilling-Roofing-Screw-Hexagonal-Self-Drilling-Screws.webp)](https://engineeringhardware.com/product/china-manufacturers-carbon-steel-hex-washer-head-self-drilling-roofing-screw/) Self-Drilling & Tek Screws ### [China Manufacturers Carbon Steel Hex Washer Head Self Drilling Roofing Screw Hexagonal Self Drilling Screws](https://engineeringhardware.com/product/china-manufacturers-carbon-steel-hex-washer-head-self-drilling-roofing-screw/) Carbon Steel,Stainless Steel,High Tensile Steel · ISO, GS, RoHS, CE **US$0.012**MOQ 1,000 pieces [![Large Flat Head 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