--- title: "Heavy-Duty U Bolts for Maximum Structural Integrity and Support" description: "Heavy-Duty U Bolts for Maximum Structural Integrity and Support — U-Bolts & J-Bolts. MOQ 1,000 pieces, US$0.072 – 0.12." url: https://engineeringhardware.com/product/heavy-duty-u-bolts-for-maximum-structural-integrity-and-support/ source: Engineering Hardware & Fasteners --- # Heavy-Duty U Bolts for Maximum Structural Integrity and Support [![Heavy-Duty U Bolts for Maximum Structural Integrity and Support](https://img.engineeringhardware.com/Heavy-Duty-U-Bolts-for-Maximum-Structural-Integrity-and-Support.webp)](https://img.engineeringhardware.com/Heavy-Duty-U-Bolts-for-Maximum-Structural-Integrity-and-Support.webp) - Standard & made-to-drawing parts - Checked before shipping - Air, sea & express delivery [Bolts › U-Bolts & J-Bolts](https://engineeringhardware.com/fastener-products/bolts/u-bolts-j-bolts/) Updated 2026-11-04 · [Markdown version](https://engineeringhardware.com/product/heavy-duty-u-bolts-for-maximum-structural-integrity-and-support.md) | **US$0.12**1,000–4,999 pieces | **US$0.11**5,000–9,999 pieces | **US$0.096**10,000–49,999 pieces | **US$0.072**50,000+ pieces | | --- | --- | --- | --- | MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel, Steel - **Head Style:** / - **Standard:** DIN, ANSI, GB, JIS, BSW, GOST - **Grade:** 4.8/6.8/8.8/10.9 - **Finish:** Zinc, Plain - **Standards:** DIN3570, Ifi-136 - **Finished:** Black/Zinc Plated/Hot DIP Galvanized - **Length:** 10mm-600mm Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Heavy-Duty%20U%20Bolts%20for%20Maximum%20Structural%20Integrity%20and%20Support%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fheavy-duty-u-bolts-for-maximum-structural-integrity-and-support%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, Steel | | Type | U-Bolts | | Connection | Common Bolt | | Head Style | / | | Standard | DIN, ANSI, GB, JIS, BSW, GOST | | Grade | 4.8/6.8/8.8/10.9 | | Finish | Zinc, Plain | | Standards | DIN3570, Ifi-136 | | Finished | Black/Zinc Plated/Hot DIP Galvanized | | Length | 10mm-600mm | | Selling Units | Building, Industry, Machinery | | Package | Cartons&Pallets or According to Customer's Require | | Size | M4-M36 | | Transport Package | Cartons & Pallets or According to Customer''s Requ | | Specification | M4-M36 | | Origin | Zhejiang | | HS Code | 7318150000 | | Production Capacity | 100000000 | | Product Name | U Bolts | | Delivery time | Normally in 30-40 days. | | Main Products | Non-standard parts, fasteners, stamping parts, and machined parts. | | We implement a rigorous two-stage quality assurance protocol | Pre-production sampling with dimensional verification | | Acceptable payment instruments | SWIFT transfer, LC at sight (negotiable for bulk orders) | | Category | [U-Bolts & J-Bolts](https://engineeringhardware.com/fastener-products/bolts/u-bolts-j-bolts/) | ## Technical parameters | Product Name: | U Bolts | | --- | --- | | Standard: | DIN 3570 | | Material: | Low carbon steel/medium carbon steel/alloy steel | | Size: | M3-M24 | | Finished: | black/zinc plated/hot dip galvanized | | Delivery time: | Normally in 30-40 days. | | Q1. Corporate Profile & Manufacturing Capabilities | | --- | | A1: Established in 2009, we are an ISO-certified fastener manufacturer and solar mounting system solutions provider headquartered in Ningbo, China. With comprehensive R&D capabilities and vertically integrated production facilities, we serve global markets including North America, Oceania, China Domestic Market, Eastern Europe, Southeast Asia, South America, Africa, and the Middle East. Our expert | | Q2. Quality Assurance System | | A2: We implement a rigorous two-stage quality assurance protocol: Pre-production sampling with dimensional verification Full batch inspection including torque testing, salt spray analysis, and material certification prior to container loading This dual-check system ensures consistent compliance with ASTM/ISO standards. | | Q3. Core Product Portfolio | | A3: Our manufacturing expertise covers: • Industrial Fastening Solutions: Hex bolts, machine screws, locking nuts, flat washers, threaded rods, blind rivets, retaining clips, and precision-engineered CNC-machined components • Solar Energy Installation Systems: Ground-mounted & rooftop solar racking systems, PV module mounting accessories, UL-certified cable management solutions, and corrosion-resi | | A4: ✓ Free samples available (1-3 pcs standard specification) ✓ Express options: DHL/UPS/FedEx (customer's account) ✓ Prototyping service: Customized samples within 15 working days ✓ Note: Sample cost refundable upon bulk order confirmation | | Q5. Payment Terms & Trade Services | | A5: Standard commercial terms: 30% T/T deposit with 70% balance payable against Bill of Lading copy For orders under $1,000 USD, we recommend full advance payment to minimize international transaction fees Acceptable payment instruments: SWIFT transfer, LC at sight (negotiable for bulk orders) | ## Description Heavy-Duty U Bolts for Maximum Structural Integrity and Support is part of our u-bolts & j-bolts range (Bolts). ### Key details - **Type:** U-Bolts - **Standard:** DIN, ANSI, GB, JIS, BSW, GOST - **Material:** Stainless Steel, Steel - **Grade:** 4.8/6.8/8.8/10.9 - **Size:** M4-M36 - **Length:** 10mm-600mm - **Head Style:** / - **Finish:** Zinc, Plain Available configurations include material, head style, standard, grade and finish. 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$0.072 – 0.12 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 Heavy-Duty U Bolts for Maximum Structural Integrity and Support? The listed minimum order is 1,000 pieces, at US$0.072 – 0.12 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$0.12 for 1,000–4,999 pieces; US$0.11 for 5,000–9,999 pieces; US$0.096 for 10,000–49,999 pieces; US$0.072 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 Heavy-Duty U Bolts for Maximum Structural Integrity and Support? Type: U-Bolts; Standard: DIN, ANSI, GB, JIS, BSW, GOST; Material: Stainless Steel, Steel; Grade: 4.8/6.8/8.8/10.9; Size: M4-M36; Length: 10mm-600mm. 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, grade and finish. 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 u-bolts & j-bolts are available? The U-Bolts & J-Bolts category lists 2,391 products in different sizes, materials and finishes: [https://engineeringhardware.com/fastener-products/bolts/u-bolts-j-bolts/](https://engineeringhardware.com/fastener-products/bolts/u-bolts-j-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 U-Bolts & J-Bolts →](https://engineeringhardware.com/fastener-products/bolts/u-bolts-j-bolts/) [![304/316 Stainless Steel U Bolt with Backing Plate for Bolt Marine Hardware](https://img.engineeringhardware.com/304-316-Stainless-Steel-U-Bolt-with-Backing-Plate-for-Bolt-Marine-Hardware.webp)](https://engineeringhardware.com/product/304-316-stainless-steel-u-bolt-with-backing-plate-for-bolt-marine-hardware/) U-Bolts & J-Bolts ### [304/316 Stainless Steel U Bolt with Backing Plate for Bolt Marine Hardware](https://engineeringhardware.com/product/304-316-stainless-steel-u-bolt-with-backing-plate-for-bolt-marine-hardware/) U Bolt · ASTM, GB, DIN, ANSI, JIS, ISO **US$5.88 – 7.08**MOQ 1 piece [![Stainless Steel Pipe Clamp Round Square Hook Clamp Bending U Bolt 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U Bolt Heavy Duty Pipe Clamping Fastener](https://engineeringhardware.com/product/304-stainless-steel-u-bolt-heavy-duty-pipe-clamping-fastener/) U-Bolt · DIN, ANSI, GB, JIS, BSW, GOST **US$1.08 – 1.20**MOQ 5,000 pieces **US$0.072 – 0.12**MOQ 1,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Heavy-Duty%20U%20Bolts%20for%20Maximum%20Structural%20Integrity%20and%20Support%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fheavy-duty-u-bolts-for-maximum-structural-integrity-and-support%2F)