--- product_id: 589809435 title: "4 Pack 9/16\"-18 x 3\" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles" brand: "johntruck" price: "520 zł" currency: PLN in_stock: true url: https://www.desertcart.pl/products/589809435-4-pack-9-16-18-x-3-long-trailer-leaf store_origin: PL region: Poland --- # Lock nuts for secure, vibration-proof hold Grade 5 heat-treated steel strength Fits 1-3/4” wide & double eye leaf springs 4 Pack 9/16"-18 x 3" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles **Brand:** johntruck **Price:** 520 zł **Availability:** ✅ In Stock ## Summary > 🔩 Lock in strength, unlock peace of mind. ## Quick Answers - **What is this?** 4 Pack 9/16"-18 x 3" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles by johntruck - **How much does it cost?** 520 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/589809435-4-pack-9-16-18-x-3-long-trailer-leaf) ## Best For - johntruck enthusiasts ## Why This Product - Trusted johntruck brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Set:** Four bolts and four lock nuts included for a full, hassle-free replacement or upgrade. - • **Precision Fit:** Specifically designed for 1-3/4” wide and double eye leaf springs, ensuring seamless installation on 2,000lb and 3,500lb axles. - • **Secure Locking:** Includes lock nuts that prevent loosening under heavy loads and rough terrain—no more mid-trip worries. - • **Built to Endure:** Grade 5 alloy steel bolts engineered for maximum durability and corrosion resistance—your trailer’s toughest ally. - • **Trusted Quality & Support:** Backed by a 12-month warranty and 30-day return policy, with dedicated customer service ready to assist. ## Overview This 4-pack of 9/16"-18 x 3" trailer leaf spring shackle bolts with lock nuts is crafted from Grade 5 heat-treated alloy steel for superior strength and corrosion resistance. Designed to fit 1-3/4" wide and double eye leaf springs, they are ideal for trailers with 2,000lb and 3,500lb axles. The set includes four bolts and four lock nuts, ensuring secure, vibration-resistant fastening. Manufactured in the USA and backed by a 12-month warranty, these bolts deliver reliable performance and peace of mind for professional-grade trailer maintenance. ## Description 4 Pack 9/16"-18 x 3" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles ## Features - 【Fitment】Fits for installing 1-3/4” wide leaf spring and double eye leaf springs onto hanger bracket or equalizers. It is common on trailers that have a 2,000lb and 3,500lb axles. - 【Function】These 9/16"-18 x 3" trailer leaf spring shackle bolts with lock nuts are used to fix your leaf springs to the leaf spring hangers and also to the center equalizer bar of the trailer. - 【High Quality】Grade 5. Made of heat-treated steel, sturdy, high strength and durable. Threads per inch: 18. The threads are deep and clear, with even force and good tightening strength when used. Good rust and corrosion resistant. - 【What You Will Get】Comes with 4 bolts and 4 lock nuts. Easy installation. - 【100% Satisfaction Guarantee】The johntruck Team aims to provide you the best products and services. We support 30 days returns and 12 months warranty. Please feel free to contact us if you have any question. ## Technical Specifications | Specification | Value | |---------------|-------| | Material | Alloy Steel | | Grade Rating | Grade 5 | | Thread Size | 3/4"-18 UNC | | Exterior Finish | NO | | Manufacturer Grade | Grade 5 | | Head Style | Round | | Fastener Type | Eye Bolt | | Brand | johntruck | | Thread Type | UNC | | Thread Style | Right Hand | | Item Hardness | Grade 5 | | Size | 9/16"-18 | | Metal Type | Alloy Steel | | Head Type | Eye | | Compatible groove diameter | 1.75 Inches | | Thread Class | 3A | | Maximum Shear Strength | [Estimated value: Typical range for Grade 5 steel] | | Number of Pieces | 8 | | Manufacturer | johntruck | | Model | NO | | Package Dimensions | 14.6 x 13.21 x 3 cm; 572 g | | Item model number | FL-23030-054 | | Manufacturer Part Number | FL-23030-054 | | Assembly Required | No | | Manufacturer | johntruck | | Country of Origin | USA | | Item Weight | 572 g | ## Product Details - **Material:** Alloy Steel - **Grade Rating:** Grade 5 - **Thread Size:** 3/4"-18 UNC - **Exterior Finish:** NO - **Manufacturer Grade:** Grade 5 ## Images ![4 Pack 9/16"-18 x 3" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles - Image 1](https://m.media-amazon.com/images/I/71yeCnOK0KL.jpg) ![4 Pack 9/16"-18 x 3" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles - Image 2](https://m.media-amazon.com/images/I/71CS7S1sIgL.jpg) ![4 Pack 9/16"-18 x 3" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles - Image 3](https://m.media-amazon.com/images/I/710WveQSJAL.jpg) ![4 Pack 9/16"-18 x 3" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles - Image 4](https://m.media-amazon.com/images/I/71Q0MvCyYUL.jpg) ![4 Pack 9/16"-18 x 3" Long Trailer Leaf Spring Shackle Bolts w/Lock Nuts, fit for 1-3/4” Wide Leaf Spring & Double Eye Leaf Springs, for 2,000lb and 3,500lb Axles - Image 5](https://m.media-amazon.com/images/I/71+iVrd5fuL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/589809435-4-pack-9-16-18-x-3-long-trailer-leaf](https://www.desertcart.pl/products/589809435-4-pack-9-16-18-x-3-long-trailer-leaf) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-22*