--- title: "Passivation Stainless Steel U Bolt Customized High Quality M3-M64 Full & Half Thread U Shaped for Marine Solar Industrial Pipeline Mounting" description: "Passivation Stainless Steel U Bolt Customized High Quality M3-M64 Full & Half Thread… — U-Bolts & J-Bolts. MOQ 10,000 pieces, US$0.012 – 0.12." url: https://engineeringhardware.com/product/passivation-stainless-steel-u-bolt-customized-high-quality-m3-m64-full-half-thread-u/ source: Engineering Hardware & Fasteners --- # Passivation Stainless Steel U Bolt Customized High Quality M3-M64 Full & Half Thread U Shaped for Marine Solar Industrial Pipeline Mounting [![Passivation Stainless Steel U Bolt Customized High Quality M3-M64 Full & Half Thread U Shaped for Marine Solar Industrial Pipeline Mounting](https://img.engineeringhardware.com/Passivation-Stainless-Steel-U-Bolt-Customized-High-Quality-M3-M64-Full-Half-Thread-U-Shaped-for-Marine-Solar-Industrial-Pipeline-Mounting.webp)](https://img.engineeringhardware.com/Passivation-Stainless-Steel-U-Bolt-Customized-High-Quality-M3-M64-Full-Half-Thread-U-Shaped-for-Marine-Solar-Industrial-Pipeline-Mounting.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/passivation-stainless-steel-u-bolt-customized-high-quality-m3-m64-full-half-thread-u.md) Model no. **Hys1231899** US$0.012 – 0.12 / piece MOQ 10,000 pieces · Final price confirmed in your quote - **Material:** Carbon Steel - **Head Style:** U-Shaped Integral Bent - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Grade:** Grade 4.8 / 8.8 / 10.9 / 12.9 - **Customized:** Yes - **Thread Specification:** Full Metric Thread - **Surface Treatment:** Black & Blue Zinc Plated - **Tolerance Grade:** ISO 2768 Dimension Tolerance Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Passivation%20Stainless%20Steel%20U%20Bolt%20Customized%20High%20Quality%20M3-M64%20Full%20%26amp%3B%20Half%20Thread%20U%20Shaped%20for%20Marine%20Solar%20Industrial%20Pipeline%20Mounting%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fpassivation-stainless-steel-u-bolt-customized-high-quality-m3-m64-full-half-thread-u%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 | Carbon Steel | | Type | Customized One-Piece Fastener | | Model NO. | Hys1231899 | | Groove | No Inner Drive Recess | | Connection | Full Standard Metric Thread U-Bolt | | Head Style | U-Shaped Integral Bent | | Standard | DIN, GB, ANSI, BSW, JIS, GOST | | Grade | Grade 4.8 / 8.8 / 10.9 / 12.9 | | Customized | Yes | | Drawing | Yes | | Application | Truck Chassis, Solar PV, Pipeline Fixing | | Process | High-Temperature Integral Cold Bending | | Service | OEM & ODM Customized Service | | Thread Specification | Full Metric Thread | | Surface Treatment | Black & Blue Zinc Plated | | Tolerance Grade | ISO 2768 Dimension Tolerance | | Corrosion Resistance | Good Anti-Corrosion, Anti Salt Spray | | Knurl Specification | Not Applicable, No Knurl Design | | Key Features | One-Piece Cold Bent | | Transport Package | Polybag+Export Strong Carton | | Specification | M4, M6, M8, M10, M12, M16, M20, M24, M30 | | Origin | China | | HS Code | 7318159090 | | Production Capacity | 100ton/Month | | Package Size | 30.00cm * 20.00cm * 20.00cm | | Package Gross Weight | 0.500kg | | Full customized service solution with adjustable parameters | stainless steel grade (A2/SS304, A4/SS316, A4-70), round/square U shape, full/half thread length, M3-M64 arbitrary size, EPDM rubber sleeve thickness, laser engraved private brand logo HYS and personalized export carton printing. Small trial sample orders and full-container bulk mass orders are both flexibly supported. | | Non-standard parts | 15-25days | | Category | [U-Bolts & J-Bolts](https://engineeringhardware.com/fastener-products/bolts/u-bolts-j-bolts/) | ## Technical parameters | Item | Details | | --- | --- | | Full Official Product Name | High Quality Custom Integral Cold Bent U-Shaped Bolt, Passivation Finished Stainless Steel Fastener, Wide Size Range M3-M64, Optional Full / Half Metric Thread Pipe Clamp Hardware With Outstanding Anti-Corrosion Performance for Marine, Solar PV, Chemical, Municipal & Heavy Industrial Pipeline Projects | | Stainless Steel Material & Performance Grades | Multiple premium stainless steel grades optional for different working conditions: A2(SS304), A4(SS316), A4-70 high tensile strength grade. Raw steel rods strictly screened with chemical composition and tensile hardness testing before cold bending. A2 grade fits general outdoor scenarios; A4/A4-70 with molybdenum element provides superior salt fog, acid and alkali resistance for coastal, offshore | | Global Applicable Manufacturing Standards | Produced complying with DIN standard, fully compatible with GB, ANSI, BSW, JIS, GOST international unified metric fastener specifications. U arc radian, thread pitch, thread length and dimensional deviation all follow ISO 2768 mechanical tolerance standards, realizing cross-border interchangeable installation for global engineering and wholesale buyers. | | Ultra-Wide Custom Size Range & Two Thread Types | Complete customizable metric sizes covering M3, M4, M6, M8, M10, M12, M16, M20, M24, M30 up to large size M64. Two thread styles for selection: full metric thread or half metric thread. Customization supports tailor-made round U / square U profiles, inner U width, total thread length and rod thickness. Customer technical drawings, sample-based customization and non-standard special sizes are fully | | Passivation Surface Treatment & Anti-Corrosion Advantages | Adopts professional pickling and passivation surface finish without electroplating. The passivation layer forms a dense protective film on stainless steel surface, greatly improving oxidation resistance, salt spray resistance and service life. Smooth matte silver surface without burrs on curved arcs and threaded ends. Optional black EPDM anti-vibration rubber sleeve can be wrapped on U bending sec | | Integrated Cold Bending Production Craft | Adopts one-piece high-temperature integral cold bending forming process without welding seams, eliminating structural weak points and lifting overall tensile breaking load limit. Two ends processed by precision thread rolling equipment to form uniform smooth metric threads, perfectly matched with supporting stainless steel hex nuts and flat washers to achieve reliable anti-loosening effect under c | | Dimensional Tolerance Execution Standard | All finished customized passivation stainless steel U bolts are manufactured under ISO 2768 general mechanical dimensional tolerance rules. Comprehensive pre-delivery full inspection covers U arc roundness/squareness, thread length consistency, overall dimension and thread matching tightness, effectively eliminating dimensional deviation generated during mass continuous production. | | Dual Round & Square U Structural Design Features | Two mainstream bent profiles for matching different pipes: round U shape for circular tubes, square U shape for square/rectangular metal profiles. No inner drive recess, smooth non-knurl surface without extra knurling processing. Symmetrical dual threaded ends evenly distribute clamping pressure to firmly lock pipes and profiles, preventing bolt loosening caused by vehicle bumps, outdoor wind load | | Wide Multi-Scenario Application Coverage | 1. Ground & rooftop solar photovoltaic support frame circular/rectangular pipeline fixing; 2. Marine ship fluid pipelines, cable conduits and offshore platform fixture clamping; 3. Chemical factory corrosive medium pipeline fastening; 4. Metal fence, agricultural machinery and heavy truck chassis pipeline bracket mounting; 5. Construction steel frame, municipal engineering and heavy industrial lar | | Comprehensive OEM & ODM Customization Service System | Full customized service solution with adjustable parameters: stainless steel grade (A2/SS304, A4/SS316, A4-70), round/square U shape, full/half thread length, M3-M64 arbitrary size, EPDM rubber sleeve thickness, laser engraved private brand logo HYS and personalized export carton printing. Small trial sample orders and full-container bulk mass orders are both flexibly supported. | | Environmental Adaptability Highlights | The special passivation treatment maximizes the natural anti-rust performance of stainless steel, far superior to ordinary polishing surface. Wide M3-M64 size range covers miniature light-duty installation to heavy large industrial pipeline fixing demands. Selectable half-thread design avoids direct friction between threads and pipes to reduce wear and extend product service cycle significantly. | | Export Standard Anti-Abrasion Packaging Scheme | Each single U bolt or complete bolt assembly set is individually packed with transparent scratch-proof polybag to avoid surface abrasion and dust contamination during cross-border transit; outer packaging adopts thickened compression-resistant reinforced export corrugated cartons. Wooden pallet stacking service is available for large-volume bulk orders to prevent product extrusion deformation duri | | Factory Origin & Complete Export Customs Document Support | Direct factory supply manufactured in China without intermediate distributors, brand logo HYS can be laser marked on bolt surface as customer required. A full set of customs clearance documents can be provided, including commercial invoice, packing list, raw material test report and factory finished product inspection certificate for smooth worldwide customs clearance. | | Rigorous 100% Pre-Shipment Quality Inspection Flow | Every batch of finished goods undergoes full inspection before delivery, including dimensional measurement test covering M3-M64 full size range, thread matching tightness test, passivation protective layer integrity check and rubber wrapping tightness test. All defective unqualified finished products will be strictly reworked or eliminated to maintain stable consistent high batch quality for overs | | Applicable HS Customs Code | 7318160000 - Custom passivation stainless steel round & square U-shaped pipe clamp bolts, metric size M3-M64 with full/half thread, high anti-corrosion fixing hardware for marine, solar, chemical and heavy industrial pipeline engineering projects. | ## Description Passivation Stainless Steel U Bolt Customized High Quality M3-M64 Full & Half Thread U Shaped for Marine Solar Industrial Pipeline Mounting is part of our u-bolts & j-bolts range (Bolts). ### Key details - **Type:** Customized One-Piece Fastener - **Standard:** DIN, GB, ANSI, BSW, JIS, GOST - **Material:** Carbon Steel - **Grade:** Grade 4.8 / 8.8 / 10.9 / 12.9 - **Head Style:** U-Shaped Integral Bent - **Groove:** No Inner Drive Recess - **Surface Treatment:** Black & Blue Zinc Plated - **Connection:** Full Standard Metric Thread U-Bolt Available configurations include material, head style, standard, grade and customized. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request. ### Ordering through Engineering Hardware & Fasteners Minimum order is 10,000 pieces at US$0.012 – 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 Passivation Stainless Steel U Bolt Customized High Quality M3-M64 Full & Half Thread U Shaped for Marine Solar Industrial Pipeline Mounting? The listed minimum order is 10,000 pieces, at US$0.012 – 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. ### What are the main specifications of Passivation Stainless Steel U Bolt Customized High Quality M3-M64 Full & Half Thread U Shaped for Marine Solar Industrial Pipeline Mounting? Type: Customized One-Piece Fastener; Standard: DIN, GB, ANSI, BSW, JIS, GOST; Material: Carbon Steel; Grade: Grade 4.8 / 8.8 / 10.9 / 12.9; Head Style: U-Shaped Integral Bent; Groove: No Inner Drive Recess. 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 customized. 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/) [![Carbon Steel U Bolt High Strength Grade 8.8 Alloy Steel U Bolt Clamp](https://img.engineeringhardware.com/Carbon-Steel-U-Bolt-High-Strength-Grade-8-8-Alloy-Steel-U-Bolt-Clamp.webp)](https://engineeringhardware.com/product/carbon-steel-u-bolt-high-strength-grade-8-8-alloy-steel-u-bolt-clamp/) U-Bolts & J-Bolts ### [Carbon Steel U Bolt High Strength Grade 8.8 Alloy Steel U Bolt Clamp](https://engineeringhardware.com/product/carbon-steel-u-bolt-high-strength-grade-8-8-alloy-steel-u-bolt-clamp/) Pan Head · DIN, ANSI, GB, JIS, BSW, GOST **US$2.40**MOQ 100 pieces [![Six Wheel Truck Leaf Spring U Bolt High Strength Bolt for Mercedes-Benz Bolts and Nut](https://img.engineeringhardware.com/Six-Wheel-Truck-Leaf-Spring-U-Bolt-High-Strength-Bolt-for-Mercedes-Benz-Bolts-and-Nut.webp)](https://engineeringhardware.com/product/six-wheel-truck-leaf-spring-u-bolt-high-strength-bolt-for-mercedes-benz-bolts-and-nut/) U-Bolts & J-Bolts ### [Six Wheel Truck Leaf Spring U Bolt High Strength Bolt for Mercedes-Benz Bolts and Nut](https://engineeringhardware.com/product/six-wheel-truck-leaf-spring-u-bolt-high-strength-bolt-for-mercedes-benz-bolts-and-nut/) 10.9 · Color-Zinc Plated **US$0.72 – 1.20**MOQ 100 pieces [![Hot DIP Galvanized Stainless Steel SS316 U Type Lock M24 Bolts U-Bolt Fasteners Hardware](https://img.engineeringhardware.com/Hot-DIP-Galvanized-Stainless-Steel-SS316-U-Type-Lock-M24-Bolts-U-Bolt-Fasteners-Hardware.webp)](https://engineeringhardware.com/product/hot-dip-galvanized-stainless-steel-ss316-u-type-lock-m24-bolts-u-bolt-fasteners/) U-Bolts & J-Bolts ### [Hot DIP Galvanized Stainless Steel SS316 U Type Lock M24 Bolts U-Bolt Fasteners Hardware](https://engineeringhardware.com/product/hot-dip-galvanized-stainless-steel-ss316-u-type-lock-m24-bolts-u-bolt-fasteners/) Hexagon Head · DIN, ANSI, GB **US$0.12 – 0.18**MOQ 1,000 pieces [![Fastener Heavy Duty Carbon Steel Yellow Zinc Plated U-Bolt with Threaded Ends for Pipe Fastening](https://img.engineeringhardware.com/Fastener-Heavy-Duty-Carbon-Steel-Yellow-Zinc-Plated-U-Bolt-with-Threaded-Ends-for-Pipe-Fastening.webp)](https://engineeringhardware.com/product/fastener-heavy-duty-carbon-steel-yellow-zinc-plated-u-bolt-with-threaded-ends-for/) U-Bolts & J-Bolts ### [Fastener Heavy Duty Carbon Steel Yellow Zinc Plated U-Bolt with Threaded Ends for Pipe Fastening](https://engineeringhardware.com/product/fastener-heavy-duty-carbon-steel-yellow-zinc-plated-u-bolt-with-threaded-ends-for/) No Head · Customized **US$0.96 – 1.20**MOQ 1,000 pieces [![U Bolt for Benz Truck with High Quality 10.9 Garde Four Wheel Strength Grade Clamp U-Bolt Square Bend Lug Nut](https://img.engineeringhardware.com/U-Bolt-for-Benz-Truck-with-High-Quality-10-9-Garde-Four-Wheel-Strength-Grade-Clamp-U-Bolt-Square-Bend-Lug-Nut.webp)](https://engineeringhardware.com/product/u-bolt-for-benz-truck-with-high-quality-10-9-garde-four-wheel-strength-grade-clamp-u/) U-Bolts & J-Bolts ### [U Bolt for Benz Truck with High Quality 10.9 Garde Four Wheel Strength Grade Clamp U-Bolt Square Bend Lug Nut](https://engineeringhardware.com/product/u-bolt-for-benz-truck-with-high-quality-10-9-garde-four-wheel-strength-grade-clamp-u/) Square Head · DIN, ANSI, GB, JIS, BSW, GOST **US$0.12 – 0.36**MOQ 50 pieces [![Zinc-Plated Steel DIN Standards Steel U-Bolt with Nuts Bent Bolt Zinc](https://img.engineeringhardware.com/Zinc-Plated-Steel-DIN-Standards-Steel-U-Bolt-with-Nuts-Bent-Bolt-Zinc.webp)](https://engineeringhardware.com/product/zinc-plated-steel-din-standards-steel-u-bolt-with-nuts-bent-bolt-zinc/) U-Bolts & J-Bolts ### [Zinc-Plated Steel DIN Standards Steel U-Bolt with Nuts Bent Bolt Zinc](https://engineeringhardware.com/product/zinc-plated-steel-din-standards-steel-u-bolt-with-nuts-bent-bolt-zinc/) Round Head · DIN, ANSI, GB, JIS, BSW, GOST **US$0.14**MOQ 10,000 pieces [![Dalian Beston Brass Threaded Rod M6 M8 M10 M12 M14 M16 M18 M20 M26 Hollow Threaded Rod China Hot Sale Threaded Rod Manufacturing High-Quality Threaded Rod](https://img.engineeringhardware.com/Dalian-Beston-Brass-Threaded-Rod-M6-M8-M10-M12-M14-M16-M18-M20-M26-Hollow-Threaded-Rod-China-Hot-Sale-Threaded-Rod-Manufacturing-High-Quality-Threaded-Rod.webp)](https://engineeringhardware.com/product/dalian-beston-brass-threaded-rod-m6-m8-m10-m12-m14-m16-m18-m20-m26-hollow-threaded/) U-Bolts & J-Bolts ### [Dalian Beston Brass Threaded Rod M6 M8 M10 M12 M14 M16 M18 M20 M26 Hollow Threaded Rod China Hot Sale Threaded Rod Manufacturing High-Quality Threaded Rod](https://engineeringhardware.com/product/dalian-beston-brass-threaded-rod-m6-m8-m10-m12-m14-m16-m18-m20-m26-hollow-threaded/) Cap Head Bolts/U-Bolts/Rod Ends/Hangers Bolts · Stainless Steel **US$0.096 – 1.20**MOQ 100 pieces [![High Strength H. D. G. Alloy Steel U Bolts with Nuts](https://img.engineeringhardware.com/High-Strength-H-D-G-Alloy-Steel-U-Bolts-with-Nuts.webp)](https://engineeringhardware.com/product/high-strength-h-d-g-alloy-steel-u-bolts-with-nuts/) U-Bolts & J-Bolts ### [High Strength H. D. G. Alloy Steel U Bolts with Nuts](https://engineeringhardware.com/product/high-strength-h-d-g-alloy-steel-u-bolts-with-nuts/) U Head · DIN, GB, JIS, General Industry **US$0.23 – 0.83**MOQ 1,000 pieces **US$0.012 – 0.12**MOQ 10,000 piecesGet a quote[WA](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Passivation%20Stainless%20Steel%20U%20Bolt%20Customized%20High%20Quality%20M3-M64%20Full%20%26amp%3B%20Half%20Thread%20U%20Shaped%20for%20Marine%20Solar%20Industrial%20Pipeline%20Mounting%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fpassivation-stainless-steel-u-bolt-customized-high-quality-m3-m64-full-half-thread-u%2F)