--- title: "Boat Trailer Square Galvanized U-Bolts" description: "Boat Trailer Square Galvanized U-Bolts — U-Bolts & J-Bolts. Material: Stainless Steel, Standard: DIN, ANSI, ASME, Ifi, ISO. MOQ 1,000 pieces, US$0.03 – 0.06." url: https://engineeringhardware.com/product/boat-trailer-square-galvanized-u-bolts/ source: Engineering Hardware & Fasteners --- # Boat Trailer Square Galvanized U-Bolts [![Boat Trailer Square Galvanized U-Bolts](https://img.engineeringhardware.com/Boat-Trailer-Square-Galvanized-U-Bolts.webp)](https://img.engineeringhardware.com/Boat-Trailer-Square-Galvanized-U-Bolts.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/boat-trailer-square-galvanized-u-bolts.md) US$0.03 – 0.06 / piece MOQ 1,000 pieces · Final price confirmed in your quote - **Material:** Stainless Steel - **Head Style:** U-Bent - **Standard:** DIN, ANSI, ASME, Ifi, ISO - **Grade:** Grade 307A, 2, 5, 8 - **Finish:** SS304 - **Length:** 3/4"-50" - **Steel Grade:** DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449, Get a quote [WhatsApp](https://wa.me/8615999653684?text=Hi%20Engineering%20Hardware%20%26amp%3B%20Fasteners%2C%20I%20would%20like%20a%20quote%20for%3A%20Boat%20Trailer%20Square%20Galvanized%20U-Bolts%20%E2%80%94%20https%3A%2F%2Fengineeringhardware.com%2Fproduct%2Fboat-trailer-square-galvanized-u-bolts%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 | U-Bent | | Connection | Common Bolt | | Head Style | U-Bent | | Standard | DIN, ANSI, ASME, Ifi, ISO | | Grade | Grade 307A, 2, 5, 8 | | Application | Machinery, Chemical Industry, Building | | Finish | SS304 | | MOQ | 1000PCS | | Length | 3/4"-50" | | Certificate | ISO;SGS; RoHS;TUV;ISO9001 | | Sampling Time | 3~5 Workdays | | Transport Package | Bulk in Carton. Then in Pallet | | Specification | M5 - M42 | | Origin | China | | HS Code | 731815 | | Production Capacity | 100tons/Month | | Stainless Steel | SS201, SS303, SS304, SS316,SS316L,SS904L,F593 | | Steel Grade | DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449, | | M2-M24 | Cold Froging,M24-M100 Hot Forging, | | Busy season | 15-30days,Slack seaon:10-15days | | Steel | 4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782 | | Category | [U-Bolts & J-Bolts](https://engineeringhardware.com/fastener-products/bolts/u-bolts-j-bolts/) | ## Technical parameters | Products name | Stainless Steel SS304 ss316 A2 A4 Square U-Bolt Boat Trailer Ubolts DIN3570 Square U Bolts | | --- | --- | | Standard: | DIN,ASTM/ANSI JIS EN ISO,AS,GB | | Material | Stainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593 | | Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9; SAE: Gr.2,5,8; ASTM: 307A,307B,A325,A394,A490,A449, | | | Finishing | Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide, Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated | | Production Process | M2-M24:Cold Froging,M24-M100 Hot Forging, Machining and CNC for Customized fastener | | Customized Products Lead time | Busy season:15-30days,Slack seaon:10-15days | | Stock Products | Steel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782 Stainless steel: All DIN Standard stainless steel Bolt | | Free Samples for standard fastener | | ## Description Boat Trailer Square Galvanized U-Bolts is part of our u-bolts & j-bolts range (Bolts). ### Key details - **Type:** U-Bent - **Standard:** DIN, ANSI, ASME, Ifi, ISO - **Material:** Stainless Steel - **Grade:** Grade 307A, 2, 5, 8 - **Length:** 3/4"-50" - **Head Style:** U-Bent - **Finish:** SS304 - **Connection:** Common Bolt 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$0.03 – 0.06 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 Boat Trailer Square Galvanized U-Bolts? The listed minimum order is 1,000 pieces, at US$0.03 – 0.06 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 Boat Trailer Square Galvanized U-Bolts? Type: U-Bent; Standard: DIN, ANSI, ASME, Ifi, ISO; Material: Stainless Steel; Grade: Grade 307A, 2, 5, 8; Length: 3/4"-50"; Head Style: U-Bent. 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/) [![Minin Truck Rear Double Axle Leaf Spring U-Bolt High Strength Grade 12.9 U-Bolt](https://img.engineeringhardware.com/Minin-Truck-Rear-Double-Axle-Leaf-Spring-U-Bolt-High-Strength-Grade-12-9-U-Bolt.webp)](https://engineeringhardware.com/product/minin-truck-rear-double-axle-leaf-spring-u-bolt-high-strength-grade-12-9-u-bolt/) U-Bolts & J-Bolts ### [Minin Truck Rear Double Axle Leaf Spring U-Bolt High Strength Grade 12.9 U-Bolt](https://engineeringhardware.com/product/minin-truck-rear-double-axle-leaf-spring-u-bolt-high-strength-grade-12-9-u-bolt/) 10.9 · Color-Zinc Plated **US$0.72 – 1.20**MOQ 100 pieces [![U-Bolt DIN3570 304 Stainless Steel U Bolts with Nut and Bolt Custom 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