--- title: "Durable External Hex Nut for Heavy-Duty Applications and Projects" description: "Durable External Hex Nut for Heavy-Duty Applications and Projects — Hex & Other Standard Nuts. MOQ 100 pieces, US$0.31 – 0.35." url: https://engineeringhardware.com/product/durable-external-hex-nut-for-heavy-duty-applications-and-projects/ source: Engineering Hardware & Fasteners --- # Durable External Hex Nut for Heavy-Duty Applications and Projects [![Durable External Hex Nut for Heavy-Duty Applications and Projects](https://img.engineeringhardware.com/Durable-External-Hex-Nut-for-Heavy-Duty-Applications-and-Projects.webp)](https://img.engineeringhardware.com/Durable-External-Hex-Nut-for-Heavy-Duty-Applications-and-Projects.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Nuts › Hex & Other Standard Nuts](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/durable-external-hex-nut-for-heavy-duty-applications-and-projects.md) Model no. **GB /T 1231** | **US$0.35**100–9,999 pieces | **US$0.31**10,000+ pieces | | --- | --- | MOQ 100 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** Hexagonal - **Standard:** DIN, GB - **Grade:** A2-70 Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Durable%20External%20Hex%20Nut%20for%20Heavy-Duty%20Applications%20and%20Projects%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdurable-external-hex-nut-for-heavy-duty-applications-and-projects%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 | | Type | Hexagon Head | | Model NO. | GB /T 1231 | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, GB | | Grade | A2-70 | | Transport Package | Box | | Specification | M20 | | Origin | Jiangsu, China | | Category | [Hex & Other Standard Nuts](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) | ## Technical parameters | Thread Siz | M12 | M16 | M20 | (M22) | M24 | (M27) | | | --- | --- | --- | --- | --- | --- | --- | --- | | D | | | | | | | | | P | Pitch | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | | da | max | 13 | 17.3 | 21.6 | 23.8 | 25.9 | 29.1 | | min | 12 | 16 | 20 | 22 | 24 | 27 | | | dw | min | 19.2 | 24.9 | 31.4 | 33.3 | 38 | 42.8 | | e | min | 22.78 | 29.56 | 37.29 | 39.55 | 45.2 | 50.85 | | m | max | 12.3 | 17.1 | 20.7 | 23.6 | 24.2 | 27.6 | | min | 11.87 | 16.4 | 19.4 | 22.3 | 22.9 | 26.3 | | | mw | min | 8.3 | 11.5 | 13.6 | 15.6 | 16 | 18.4 | | c | max | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | | min | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | | | s | max | 21 | 27 | 34 | 36 | 41 | 46 | | min | 20.16 | 26.16 | 33 | 35 | 40 | 45 | | | The supporting face verticality of thread axis | 0.29 | 0.38 | 0.47 | 0.5 | 0.57 | 0.64 | | | per 1000 units ≈ kg | 25.3 | 56.86 | 109.07 | 135.33 | 188.56 | 270.66 | | | The dimensions in the table are all uncoated dimensions. | | | | | | | | ## Description Durable External Hex Nut for Heavy-Duty Applications and Projects is part of our hex & other standard nuts range (Nuts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, GB - **Material:** Stainless Steel - **Grade:** A2-70 - **Head Style:** Hexagonal - **Connection:** Common Bolt Available configurations include material, head style, standard and grade. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 100 pieces at US$0.31 – 0.35 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 Durable External Hex Nut for Heavy-Duty Applications and Projects? The listed minimum order is 100 pieces, at US$0.31 – 0.35 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$0.35 for 100–9,999 pieces; US$0.31 for 10,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Durable External Hex Nut for Heavy-Duty Applications and Projects? Type: Hexagon Head; Standard: DIN, GB; Material: Stainless Steel; Grade: A2-70; Head Style: Hexagonal; 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, head style, standard and 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 hex & other standard nuts are available? The Hex & Other Standard Nuts category lists 8,354 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) 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 Hex & Other Standard Nuts →](https://engineeringhardware.com/fastener-products/nuts/hex-other-standard-nuts/) [![Pigtail Hook with Nut and Washer Support Cable](https://img.engineeringhardware.com/Pigtail-Hook-with-Nut-and-Washer-Support-Cable.webp)](https://engineeringhardware.com/product/pigtail-hook-with-nut-and-washer-support-cable/) Hex & Other Standard Nuts ### [Pigtail Hook with Nut and Washer Support Cable](https://engineeringhardware.com/product/pigtail-hook-with-nut-and-washer-support-cable/) Standard, Nonstandard · Metal **US$2.40**MOQ 1,000 pieces [![HDG Grade 4.8/8.8/10.9/12.9 Carbon Steel Hexagonal Nut 5/8 Heavy Hex Nut with Zinc Plated Hex Head](https://img.engineeringhardware.com/HDG-Grade-4-8-8-8-10-9-12-9-Carbon-Steel-Hexagonal-Nut-5-8-Heavy-Hex-Nut-with-Zinc-Plated-Hex-Head.webp)](https://engineeringhardware.com/product/hdg-grade-4-8-8-8-10-9-12-9-carbon-steel-hexagonal-nut-5-8-heavy-hex-nut-with-zinc/) Hex & Other Standard Nuts ### [HDG Grade 4.8/8.8/10.9/12.9 Carbon Steel Hexagonal Nut 5/8 Heavy Hex Nut with Zinc Plated Hex Head](https://engineeringhardware.com/product/hdg-grade-4-8-8-8-10-9-12-9-carbon-steel-hexagonal-nut-5-8-heavy-hex-nut-with-zinc/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.048 – 0.072**MOQ 1,000 pieces [![High Strength DIN934 M10- Black Oxide Hex Nut](https://img.engineeringhardware.com/High-Strength-DIN934-M10-Black-Oxide-Hex-Nut.webp)](https://engineeringhardware.com/product/high-strength-din934-m10-black-oxide-hex-nut/) Hex & Other Standard Nuts ### [High Strength DIN934 M10- Black Oxide Hex Nut](https://engineeringhardware.com/product/high-strength-din934-m10-black-oxide-hex-nut/) Hexagon Head · DIN **US$0.12**MOQ 10,000 pieces [![Galvanized Scaffolding Adjuster Jack Nut (34mm)](https://img.engineeringhardware.com/Galvanized-Scaffolding-Adjuster-Jack-Nut-34mm.webp)](https://engineeringhardware.com/product/galvanized-scaffolding-adjuster-jack-nut-34mm/) Hex & Other Standard Nuts ### [Galvanized Scaffolding Adjuster Jack Nut (34mm)](https://engineeringhardware.com/product/galvanized-scaffolding-adjuster-jack-nut-34mm/) Fixed · Steel **Price on request**MOQ 1,000 pieces [![NC Series Hydraulic Nut Splitter Heavy Duty Nut Cutter 5 to 90 Ton](https://img.engineeringhardware.com/NC-Series-Hydraulic-Nut-Splitter-Heavy-Duty-Nut-Cutter-5-to-90-Ton.webp)](https://engineeringhardware.com/product/nc-series-hydraulic-nut-splitter-heavy-duty-nut-cutter-5-to-90-ton/) Hex & Other Standard Nuts ### [NC Series Hydraulic Nut Splitter Heavy Duty Nut Cutter 5 to 90 Ton](https://engineeringhardware.com/product/nc-series-hydraulic-nut-splitter-heavy-duty-nut-cutter-5-to-90-ton/) Hydraulic, Mechanical · ISO, CE **US$204.00 – 720.00**MOQ 1 piece [![Dacromet Coated Hex Nut High Strength Carbon Steel Hexagon Nut Corrosion Resistant Fastener for Automotive Machinery Industrial](https://img.engineeringhardware.com/Dacromet-Coated-Hex-Nut-High-Strength-Carbon-Steel-Hexagon-Nut-Corrosion-Resistant-Fastener-for-Automotive-Machinery-Industrial.webp)](https://engineeringhardware.com/product/dacromet-coated-hex-nut-high-strength-carbon-steel-hexagon-nut-corrosion-resistant/) Hex & Other Standard Nuts ### [Dacromet Coated Hex Nut High Strength Carbon Steel Hexagon Nut Corrosion Resistant Fastener for Automotive Machinery Industrial](https://engineeringhardware.com/product/dacromet-coated-hex-nut-high-strength-carbon-steel-hexagon-nut-corrosion-resistant/) Hexagon Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.024 – 0.048**MOQ 10 pieces [![Premium M8 Zinc-Plated Nut for CNC Machining Applications](https://img.engineeringhardware.com/Premium-M8-Zinc-Plated-Nut-for-CNC-Machining-Applications.webp)](https://engineeringhardware.com/product/premium-m8-zinc-plated-nut-for-cnc-machining-applications/) Hex & Other Standard Nuts ### [Premium M8 Zinc-Plated Nut for CNC Machining Applications](https://engineeringhardware.com/product/premium-m8-zinc-plated-nut-for-cnc-machining-applications/) Round Head · DIN, ANSI, GB, JIS, GOST **US$0.13 – 0.24**MOQ 100 pieces [![DIN 928 Square Welded Nuts M10 M16 M20](https://img.engineeringhardware.com/DIN-928-Square-Welded-Nuts-M10-M16-M20.webp)](https://engineeringhardware.com/product/din-928-square-welded-nuts-m10-m16-m20/) Hex & Other Standard Nuts ### [DIN 928 Square Welded Nuts M10 M16 M20](https://engineeringhardware.com/product/din-928-square-welded-nuts-m10-m16-m20/) Square Head · DIN, ANSI, GB, JIS, GOST, BSW **US$0.012**MOQ 1,000 pieces **US$0.31 – 0.35**MOQ 100 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Durable%20External%20Hex%20Nut%20for%20Heavy-Duty%20Applications%20and%20Projects%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fdurable-external-hex-nut-for-heavy-duty-applications-and-projects%2F)