--- title: "Structural Strength Widely Used Hex Washer Head Self Drilling Screw" description: "Structural Strength Widely Used Hex Washer Head Self Drilling Screw — Self-Drilling & Tek Screws. Material: AISI1018-1022. MOQ 1 ton, US$1,320 – 1,679." url: https://engineeringhardware.com/product/structural-strength-widely-used-hex-washer-head-self-drilling-screw/ source: Engineering Hardware & Fasteners --- # Structural Strength Widely Used Hex Washer Head Self Drilling Screw [![Structural Strength Widely Used Hex Washer Head Self Drilling Screw](https://img.engineeringhardware.com/Structural-Strength-Widely-Used-Hex-Washer-Head-Self-Drilling-Screw.webp)](https://img.engineeringhardware.com/Structural-Strength-Widely-Used-Hex-Washer-Head-Self-Drilling-Screw.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/structural-strength-widely-used-hex-washer-head-self-drilling-screw.md) Model no. **12#** US$1,320 – 1,679 / ton MOQ 1 ton · Final price confirmed in your quote - **Head Style:** Hexagonal - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Surface Hardness:** Hv 550-800 - **Core Hardness:** Hv 300-450 - **Package Size:** 33.00cm * 25.00cm * 15.00cm - **Material:** AISI1018-1022 Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Structural%20Strength%20Widely%20Used%20Hex%20Washer%20Head%20Self%20Drilling%20Screw%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fstructural-strength-widely-used-hex-washer-head-self-drilling-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 | Model NO. | 12# | | --- | --- | | Groove | Hex Washer Head | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, GB, ANSI, BSW, JIS, GOST | | Product Name | Self Drilling Screw | | Surface Hardness | Hv 550-800 | | Core Hardness | Hv 300-450 | | Case Depth (Carburizing Depth) | ≥ 0.15mm | | MOQ | 1 Ton Per Size | | Application | Metal Roof & Wall Panels,Steel Structure,etc | | Transport Package | Bale Bag or Box + Carton + Pallet | | Specification | 4.2*13mm--75mm, 5.5*20mm--150mm | | Origin | Guangdong, China | | Production Capacity | 100000tons/Year | | Package Size | 33.00cm * 25.00cm * 15.00cm | | Package Gross Weight | 25.000kg | | Customization | Available | | Material | AISI1018-1022 | | Type | AISI1018-1022 | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Category | [Self-Drilling & Tek Screws](https://engineeringhardware.com/fastener-products/screws/self-drilling-tek-screws/) | ## Technical parameters | Application | Metal to metal fastening. Metal to wood fastening. Suitable for roofing, walling, and fencing profiles. | | --- | --- | | Material | AISI1018-1022 | | Specifications | 4.2×13mm – 80mm5.5×20mm – 165mm | | Surface Hardness | HV 550–800 | | Core Hardness | HV 300–450 | | Case Depth (Carburizing Depth) | ≥ 0.15mm | | Attackrate | 10#:Max 4.5s for 4mm steel sheet under 22kg load12#:Max 5.0s for 4mm steel sheet under 80-85kg load | | Torsional Strength | 10#:80-85kgf.cm12#:100-110kgf.cm | | Thread Size | Flange Diameter Dc Min | Width Across Flats S Max | Head Thickness K Max | Washer Thickness C Min | | --- | --- | --- | --- | --- | | ST4.8(10#)Standard | 11 | 8 | 4.3 | 0.9 | | ST5.5(12#)Standard | 12 | 8 | 5.4 | 1 | ## Description Structural Strength Widely Used Hex Washer Head Self Drilling Screw is part of our self-drilling & tek screws range (Screws). ### Key details - **Type:** AISI1018-1022 - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Material:** AISI1018-1022 - **Head Style:** Hexagonal - **Groove:** Hex Washer Head - **Connection:** Common Bolt - **Application:** Metal Roof & Wall Panels,Steel Structure,etc - **Product Name:** Self Drilling Screw Available configurations include head style, standard, surface hardness, core hardness and package size. 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$1,320 – 1,679 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 Structural Strength Widely Used Hex Washer Head Self Drilling Screw? The listed minimum order is 1 ton, at US$1,320 – 1,679 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 Structural Strength Widely Used Hex Washer Head Self Drilling Screw? Type: AISI1018-1022; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: AISI1018-1022; Head Style: Hexagonal; Groove: Hex Washer Head; 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 head style, standard, surface hardness, core hardness and package size. 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/) [![Malaxy Self Drilling Screws Hex Head Drill Point Roofing Screws](https://img.engineeringhardware.com/Malaxy-Self-Drilling-Screws-Hex-Head-Drill-Point-Roofing-Screws.webp)](https://engineeringhardware.com/product/malaxy-self-drilling-screws-hex-head-drill-point-roofing-screws/) Self-Drilling & Tek Screws ### [Malaxy Self Drilling Screws Hex Head Drill Point Roofing Screws](https://engineeringhardware.com/product/malaxy-self-drilling-screws-hex-head-drill-point-roofing-screws/) Hexagon Head · DIN, ANSI, GB, JIS, BSW, GOST **US$0.012 – 0.036**MOQ 1,000 pieces [![ISO15481 Black Phosphated Pan Framing Head Black Coating Torx Pan Head Self Drilling 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