--- title: "Premium Self-Drilling Hex Head Roofing Screws for Durable Construction" description: "Premium Self-Drilling Hex Head Roofing Screws for Durable Construction — Self-Drilling & Tek Screws. MOQ 1,000 pieces, US$0.012 – 0.06." url: https://engineeringhardware.com/product/premium-self-drilling-hex-head-roofing-screws-for-durable-construction/ source: Engineering Hardware & Fasteners --- # Premium Self-Drilling Hex Head Roofing Screws for Durable Construction [![Premium Self-Drilling Hex Head Roofing Screws for Durable Construction](https://img.engineeringhardware.com/Premium-Self-Drilling-Hex-Head-Roofing-Screws-for-Durable-Construction.webp)](https://img.engineeringhardware.com/Premium-Self-Drilling-Hex-Head-Roofing-Screws-for-Durable-Construction.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/premium-self-drilling-hex-head-roofing-screws-for-durable-construction.md) Model no. **DIN7504K** | **US$0.06**1,000–9,999 pieces | **US$0.036**10,000–99,999 pieces | **US$0.012**100,000+ pieces | | --- | --- | --- | MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Shape of Head:** Hexagon - **Surface Finishing:** Polishing - **Customized:** Customized - **Packing:** Carton+Pallet - **Length:** 13mm-100mm - **Thread:** Full Thread - **Standard:** DIN 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%20Self-Drilling%20Hex%20Head%20Roofing%20Screws%20for%20Durable%20Construction%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fpremium-self-drilling-hex-head-roofing-screws-for-durable-construction%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 | | Shape of Head | Hexagon | | Model NO. | DIN7504K | | Surface Finishing | Polishing | | Certification | ISO, CE | | Customized | Customized | | MOQ | 1000PCS | | Packing | Carton+Pallet | | Delivery Time | 7-15 Working Days | | Measuring System | Inch, Metric | | Sample | Available | | Application | Industry | | Length | 13mm-100mm | | Advantage | OEM Customized Service Provided | | Item | China Fastener | | Certificate | CE, SGS, ISO | | Thread | Full Thread | | Product Name | Hexagon Flange Head Drilling Screw | | Service | OEM/ODM | | Quality | High Practicability | | Standard | DIN | | Specification | ST2.9-ST3.5 | | Origin | Jiangsu, Taizhou | | Production Capacity | 15tons/Month | | Category | [Self-Drilling & Tek Screws](https://engineeringhardware.com/fastener-products/screws/self-drilling-tek-screws/) | ## Technical parameters | Thread specification d | ST2.9 | ST3.5 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | | | --- | --- | --- | --- | --- | --- | --- | --- | | P | Thread pitch | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | | a | Max | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | | dc | Max | 6.3 | 8.3 | 8.8 | 10.5 | 11 | 13.5 | | Min | 5.8 | 7.6 | 8.1 | 9.8 | 10 | 12.2 | | | c | Min | 0.4 | 0.6 | 0.8 | 0.9 | 1 | 1 | | s | Max=Nominal | 4 | 5.5 | 7 | 8 | 8 | 10 | | Min | 3.82 | 5.32 | 6.78 | 7.78 | 7.78 | 9.78 | | | e | Min | 4.28 | 5.96 | 7.59 | 8.71 | 8.71 | 10.95 | | k | Max=Nominal | 2.8 | 3.4 | 4.1 | 4.3 | 5.4 | 5.9 | | Min | 2.5 | 3 | 3.6 | 3.8 | 4.8 | 5.3 | | | kw | Min | 1.3 | 1.5 | 1.8 | 2.2 | 2.7 | 3.1 | | r | Max | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | | Drilling range (plate thickness) | ≥ | 0.7 | 0.7 | 1.75 | 1.75 | 1.75 | 2 | | ≤ | 1.9 | 2.25 | 3 | 4.4 | 5.25 | 6 | | ## Description Premium Self-Drilling Hex Head Roofing Screws for Durable Construction is part of our self-drilling & tek screws range (Screws). ### Key details - **Standard:** DIN - **Material:** Stainless Steel - **Thread:** Full Thread - **Length:** 13mm-100mm - **Application:** Industry - **Certification:** ISO, CE - **Shape of Head:** Hexagon - **Surface Finishing:** Polishing Available configurations include material, shape of head, surface finishing, customized and packing. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 1,000 pieces at US$0.012 – 0.06 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 Premium Self-Drilling Hex Head Roofing Screws for Durable Construction? The listed minimum order is 1,000 pieces, at US$0.012 – 0.06 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$0.06 for 1,000–9,999 pieces; US$0.036 for 10,000–99,999 pieces; US$0.012 for 100,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Premium Self-Drilling Hex Head Roofing Screws for Durable Construction? Standard: DIN; Material: Stainless Steel; Thread: Full Thread; Length: 13mm-100mm; Application: Industry; Certification: ISO, CE. 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 packing. 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 & 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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/) [![Tornillos Autoperforante Carbon Steel Size 3.9 Hex Washer Head Galvanized 160 Self Drilling Tek Screws for Metal](https://img.engineeringhardware.com/Tornillos-Autoperforante-Carbon-Steel-Size-3-9-Hex-Washer-Head-Galvanized-160-Self-Drilling-Tek-Screws-for-Metal.webp)](https://engineeringhardware.com/product/tornillos-autoperforante-carbon-steel-size-3-9-hex-washer-head-galvanized-160-self/) Self-Drilling & Tek Screws ### [Tornillos Autoperforante Carbon Steel Size 3.9 Hex Washer Head Galvanized 160 Self Drilling Tek Screws for Metal](https://engineeringhardware.com/product/tornillos-autoperforante-carbon-steel-size-3-9-hex-washer-head-galvanized-160-self/) Hexagon Head · DIN **US$0.012 – 0.024**MOQ 1,000 pieces [![Rust-Resistant Stainless Steel Pan Head 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