--- title: "Black Oxide Heavy Hex Structural Bolt for Steel Structure Project" description: "Black Oxide Heavy Hex Structural Bolt for Steel Structure Project — Structural & Heavy Hex Bolts. MOQ 2,000 pieces, US$0.012 – 1.66." url: https://engineeringhardware.com/product/black-oxide-heavy-hex-structural-bolt-for-steel-structure-project/ source: Engineering Hardware & Fasteners --- # Black Oxide Heavy Hex Structural Bolt for Steel Structure Project [![Black Oxide Heavy Hex Structural Bolt for Steel Structure Project](https://img.engineeringhardware.com/Black-Oxide-Heavy-Hex-Structural-Bolt-for-Steel-Structure-Project.webp)](https://img.engineeringhardware.com/Black-Oxide-Heavy-Hex-Structural-Bolt-for-Steel-Structure-Project.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Bolts › Structural & Heavy Hex Bolts](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/black-oxide-heavy-hex-structural-bolt-for-steel-structure-project.md) Model no. **Heavy hex structural bolt** | **US$1.66**2,000–9,999 pieces | **US$0.16**10,000–49,999 pieces | **US$0.012**50,000+ pieces | | --- | --- | --- | MOQ 2,000 pieces · Final price confirmed in your quote - **Head Style:** Hexagonal - **Standard:** DIN, ANSI, GB, JIS - **Grade:** Astma325/A490/Cl10.9 - **Finish:** Plain/Zinc Plated/Black Oxide/H.D.G and etc - **Thread:** M/Unc/Unf - **Package Size:** 20.00cm * 10.00cm * 10.00cm - **Material:** Carbon Steel/Alloy Steel Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Black%20Oxide%20Heavy%20Hex%20Structural%20Bolt%20for%20Steel%20Structure%20Project%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fblack-oxide-heavy-hex-structural-bolt-for-steel-structure-project%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. | Heavy hex structural bolt | | --- | --- | | Connection | Common Bolt | | Head Style | Hexagonal | | Standard | DIN, ANSI, GB, JIS | | Grade | Astma325/A490/Cl10.9 | | Application | Machinery, Chemical Industry, Environmental, Building | | Finish | Plain/Zinc Plated/Black Oxide/H.D.G and etc | | MOQ | 2000PCS | | Delivery Time | 10-15 Days | | Inspection | 100% QC Test | | Manufacture Processing | Cold Forging/ Hot Forging | | Experience | for 20 Years | | Thread | M/Unc/Unf | | Certification | ISO9001 | | Sample | Sample Avaliable | | Supply Type | OEM / Custom / Drawing | | Delivery Method | by Sea, by Air or by Express Service | | Transport Package | Plastic Bag/Boxes and Cartons/Pallets/Customized | | Specification | 1/2"-1 1/2", M12-M36 | | Origin | China | | HS Code | 7318159001 | | Production Capacity | 10000000PCS/Month | | Package Size | 20.00cm * 10.00cm * 10.00cm | | Package Gross Weight | 25.000kg | | Lead Time | 10 days (1 - 2000 Pieces) To be negotiated ( > 2000 Pieces) | | Customization | Available | | Material | Carbon Steel/Alloy Steel | | Type | Hexagon Head | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Category | [Structural & Heavy Hex Bolts](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) | ## Technical parameters | Material | 1.StainlessSteel:SS201,SS303,SS304,SS316,SS410,SS4202.Steel:C45(K1045), C46(K1046),C203.Carbon Steel: 1010,1035,1045 | | --- | --- | | Grade | SAE J429 Gr.2, 5,8; ASTM A307Gr.A,A193 B7,B8,B8M,A194 2H, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 and etc. | | Finish | Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G and etc. | | Thread | UNC,UNF,UEF,UN,UNS | | Standard | ISO, DIN, ANSI, JIS, BS and Non-standard | | Sample Service | Samples are all in free. | | Certificate | ISO9001,CE, SGS, BV | | Packing | Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand | | Payment terms | FOB, CIF, CFR, L/C, or others. | | Delivery method | by sea, by air or by express service | | Application | Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating and etc. | ## Description Black Oxide Heavy Hex Structural Bolt for Steel Structure Project is part of our structural & heavy hex bolts range (Bolts). ### Key details - **Type:** Hexagon Head - **Standard:** DIN, ANSI, GB, JIS - **Material:** Carbon Steel/Alloy Steel - **Grade:** Astma325/A490/Cl10.9 - **Thread:** M/Unc/Unf - **Head Style:** Hexagonal - **Finish:** Plain/Zinc Plated/Black Oxide/H.D.G and etc - **Connection:** Common Bolt Available configurations include head style, standard, grade, finish and thread. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 2,000 pieces at US$0.012 – 1.66 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 Black Oxide Heavy Hex Structural Bolt for Steel Structure Project? The listed minimum order is 2,000 pieces, at US$0.012 – 1.66 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$1.66 for 2,000–9,999 pieces; US$0.16 for 10,000–49,999 pieces; US$0.012 for 50,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote. ### What are the main specifications of Black Oxide Heavy Hex Structural Bolt for Steel Structure Project? Type: Hexagon Head; Standard: DIN, ANSI, GB, JIS; Material: Carbon Steel/Alloy Steel; Grade: Astma325/A490/Cl10.9; Thread: M/Unc/Unf; Head Style: Hexagonal. 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, grade, finish and thread. 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 structural & heavy hex bolts are available? The Structural & Heavy Hex Bolts category lists 2,565 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) 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 Structural & Heavy Hex Bolts →](https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/) [![HDG Hex Head Bolt Price/Zinc Plated Bolt/Black Bolt/High Strength Bolt](https://img.engineeringhardware.com/HDG-Hex-Head-Bolt-Price-Zinc-Plated-Bolt-Black-Bolt-High-Strength-Bolt.webp)](https://engineeringhardware.com/product/hdg-hex-head-bolt-price-zinc-plated-bolt-black-bolt-high-strength-bolt/) Structural & Heavy Hex Bolts ### [HDG Hex Head Bolt Price/Zinc Plated Bolt/Black Bolt/High Strength Bolt](https://engineeringhardware.com/product/hdg-hex-head-bolt-price-zinc-plated-bolt-black-bolt-high-strength-bolt/) Hexagon Head · DIN, ANSI, GB, JIS, BSW, GOST, Customize **US$0.006 – 0.036**MOQ 10,000 pieces [![High-Strength Copper-Plated Double-Ended Bolt for Mechanical 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**US$0.012 – 1.66**MOQ 2,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Black%20Oxide%20Heavy%20Hex%20Structural%20Bolt%20for%20Steel%20Structure%20Project%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fblack-oxide-heavy-hex-structural-bolt-for-steel-structure-project%2F)