--- title: "Special Heavy-Duty Anchor Bolts for Engineering Use" description: "Special Heavy-Duty Anchor Bolts for Engineering Use — Foundation & Anchor Bolts. MOQ 1,000 pieces, US$1.20 – 12.00." url: https://engineeringhardware.com/product/special-heavy-duty-anchor-bolts-for-engineering-use/ source: Engineering Hardware & Fasteners --- # Special Heavy-Duty Anchor Bolts for Engineering Use [![Special Heavy-Duty Anchor Bolts for Engineering Use](https://img.engineeringhardware.com/Special-Heavy-Duty-Anchor-Bolts-for-Engineering-Use.webp)](https://img.engineeringhardware.com/Special-Heavy-Duty-Anchor-Bolts-for-Engineering-Use.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Anchors & Construction Fixings › Foundation & Anchor Bolts](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/) Updated 2026-11-03 · [Markdown version](https://engineeringhardware.com/product/special-heavy-duty-anchor-bolts-for-engineering-use.md) US$1.20 – 12.00 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Grade:** 12.9 - **Head Style:** Customization - **Material:** Alloy Steel - **Standard:** ANSI, BSW, DIN, GB, GOST - **Other Materials:** Carbon Steel / Stainless Steel 304/316 / Hot Galva - **Surface Treatment:** Electro-Galvanizing / Hot-DIP Galvanizing / Dacrom - **Load-Bearing Grade:** Heavy Load-Bearing Capacity / Super Heavy Load-Bea - **Standard Type:** National Standard GB / German Standard DIN / Inter Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Special%20Heavy-Duty%20Anchor%20Bolts%20for%20Engineering%20Use%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fspecial-heavy-duty-anchor-bolts-for-engineering-use%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 | Grade | 12.9 | | --- | --- | | Head Style | Customization | | Material | Alloy Steel | | Standard | ANSI, BSW, DIN, GB, GOST | | Type | Bonded Anchor Bolt | | Other Materials | Carbon Steel / Stainless Steel 304/316 / Hot Galva | | Surface Treatment | Electro-Galvanizing / Hot-DIP Galvanizing / Dacrom | | Load-Bearing Grade | Heavy Load-Bearing Capacity / Super Heavy Load-Bea | | Applicable Scenarios | Steel Structure / Curtain Wall / Foundation / Equi | | Standard Type | National Standard GB / German Standard DIN / Inter | | Anchor Fixation Method | Expanding Type / Chemical Tube Type / Self-Expandi | | Product Grade | 8.8 Grade / 10.9 Grade / 12.9 Grade High-Strength | | Transport Package | Boxed | | Specification | M12/M16/M20/M24/M30 | | Origin | China | | HS Code | 3926901000 | | Production Capacity | 800PCS/H | | Package Size | 50.00cm * 35.00cm * 25.00cm | | Package Gross Weight | 15.000kg | | Customization | Available | | Application | Structural Steel Connections | | Finish | Black Oxide | | Shipping Cost | Contact the supplier about freight and estimated delivery time. | | Delivery time | Regular specifications in stock take 3-5 days to ship, bulk customization takes 7-15 days, supporting sea, land, and air transportation; | | Category | [Foundation & Anchor Bolts](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/) | ## Technical parameters | Types of mechanical locking key anchors | Main characteristics of anchors | Formation of key principle | Scope of application | Analysis of Locking Key Anchoring Effect | | --- | --- | --- | --- | --- | | LZK-A Self-Cutting Bottom-Enlarging Anchor Bolt | Anchor head locking key plateWelding diamond | Diamond continuous cuttingEnlarged hole | Important steel components are anchored to concrete for earthquake resistance.Impact resistant; suitable for installation in cracked concrete. | Continuous cutting and reaming results in high-quality reaming and fully opens the anchor bolt locking key plate.When there is reinforcing steel at the edge of the hole, the hole can be enlarged, making it the safest anchor bolt. | | LZK-D Self-Cutting Bottom-Enlarging Anchor Bolt | Anchor head locking key plateWelding three carbide cutting tools | Carbide cutting tool for reaming | Important steel components are anchored to concrete for earthquake resistance.Impact resistant, suitable for installation in cracked concrete. | The hole enlargement quality is high, and the anchor bolt locking key plate is fully opened.However, when reinforcing bars are encountered at the edge of the hole, the hole-reaming drill bit has a poor hole-reaming effect, and the hole-reaming operation...The industry needs remedial measures. | | LHK-A rear-expanded anchor bolt | Anchor head locking key plateAnti-slip grooves are provided | Using push-type reamingdrill bit reaming | Important steel components are anchored to concrete for earthquake resistance.Impact resistant, suitable for installation in cracked concrete. | The hole enlargement quality is high, and the anchor bolt locking key plate is fully opened.However, when reinforcing bars are encountered at the edge of the hole, the hole-reaming drill bit has a poor hole-reaming effect, and the hole-reaming operation...Remedial measures are needed. | | LHK-B rear-expanded anchor bolt | Anchor head optimization designAdd ring-shaped cutting edge | Using push-type reamingdrill bit reaming | Important steel components are anchored to concrete for earthquake resistance.Impact resistant, suitable for installation in cracked concrete. | The hole enlargement quality is high, and the anchor bolt locking key plate is fully opened.However, when encountering reinforcing bars at the edge of the hole, the enlarging drill bit has poor hole-enlarging effect, requiring additional...The ring-shaped blade can still form a locking key. | | LZQ type self-cutting anchor bolt | The anchor bolt locking key plate design is a double ring.Shaped blade, made of alloy steel. | Circular blade cutting holewall | Suitable for general steel components and concrete anchoring installation.It has expansion stress and is not suitable for installation in cracked concrete. | The ring-shaped cutting edge cuts completely into the hole wall, allowing for quick installation. However, when the edge of the hole encounters steel...When the concrete is reinforced or cracked, the anchoring effect is poor. | ## Description Special Heavy-Duty Anchor Bolts for Engineering Use is part of our foundation & anchor bolts range (Anchors & Construction Fixings). ### Key details - **Type:** Bonded Anchor Bolt - **Standard:** ANSI, BSW, DIN, GB, GOST - **Material:** Alloy Steel - **Grade:** 12.9 - **Head Style:** Customization - **Surface Treatment:** Electro-Galvanizing / Hot-DIP Galvanizing / Dacrom - **Finish:** Black Oxide - **Application:** Structural Steel Connections Available configurations include grade, head style, material, standard and other materials. 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$1.20 – 12.00 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 Special Heavy-Duty Anchor Bolts for Engineering Use? The listed minimum order is 1,000 pieces, at US$1.20 – 12.00 per piece. 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 Special Heavy-Duty Anchor Bolts for Engineering Use? Type: Bonded Anchor Bolt; Standard: ANSI, BSW, DIN, GB, GOST; Material: Alloy Steel; Grade: 12.9; Head Style: Customization; Surface Treatment: Electro-Galvanizing / Hot-DIP Galvanizing / Dacrom. The full specification table and any technical parameter tables are listed on this page. ### Can this product be customized (OEM)? Listed configurations include grade, head style, material, standard and other materials. 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 foundation & anchor bolts are available? The Foundation & Anchor Bolts category lists 2,223 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-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 & 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custom quote →](https://engineeringhardware.com/contact/) ## Request a quote for this product ## Related products [All Foundation & Anchor Bolts →](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-bolts/) [![Hot Dipped Galvanized 1-1/8″ ASTM F1554 Gr. 55 L Anchor Bolt](https://img.engineeringhardware.com/Hot-Dipped-Galvanized-1-1-8-ASTM-F1554-Gr-55-L-Anchor-Bolt.webp)](https://engineeringhardware.com/product/hot-dipped-galvanized-1-1-8-astm-f1554-gr-55-l-anchor-bolt/) Foundation & Anchor Bolts ### [Hot Dipped Galvanized 1-1/8″ ASTM F1554 Gr. 55 L Anchor Bolt](https://engineeringhardware.com/product/hot-dipped-galvanized-1-1-8-astm-f1554-gr-55-l-anchor-bolt/) Foundation Bolt · DIN, ANSI, GB, JIS, BSW, GOST **US$0.06 – 0.13**MOQ 1,000 pieces [![Hot DIP Galvanized Zinc Plated Foundation Anchor Bolt 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