--- product_id: 20019111 title: "Prime-Line U 9592 Stainless Steel Lock and Door Reinforcer, 1-3/4 In. x 4-1/2 In., 2-1/8 In. Single Bore, 2-3/4 In. Backset, Silver (Single Pack)" brand: "defender security" price: "¥6725" currency: JPY in_stock: true reviews_count: 13 category: "Defender Security" url: https://www.desertcart.jp/products/20019111-prime-line-u-9592-stainless-steel-lock-and-door-reinforcer store_origin: JP region: Japan --- # Fits 1-3/4" thick doors precisely Solid stainless steel strength Pre-punched for easy install Prime-Line U 9592 Stainless Steel Lock and Door Reinforcer, 1-3/4 In. x 4-1/2 In., 2-1/8 In. Single Bore, 2-3/4 In. Backset, Silver (Single Pack) **Brand:** defender security **Price:** ¥6725 **Availability:** ✅ In Stock ## Summary > 🔐 Lock in peace of mind with steel-strong security! ## Quick Answers - **What is this?** Prime-Line U 9592 Stainless Steel Lock and Door Reinforcer, 1-3/4 In. x 4-1/2 In., 2-1/8 In. Single Bore, 2-3/4 In. Backset, Silver (Single Pack) by defender security - **How much does it cost?** ¥6725 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/20019111-prime-line-u-9592-stainless-steel-lock-and-door-reinforcer) ## Best For - defender security enthusiasts ## Why This Product - Trusted defender security brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek Silver Finish:** Modern stainless steel look that blends with any door style while boosting security. - • **Unmatched Door Defense:** Reinforces the vulnerable lock area to prevent forced entry and door damage. - • **Effortless Installation:** Comes with all mounting hardware and pre-punched holes for a seamless setup. - • **Premium Stainless Steel Build:** Crafted from durable, corrosion-resistant stainless steel for long-lasting security. - • **Precision Fit for Standard Doors:** Designed specifically for 1-3/4 inch thick doors with 2-1/8 inch bore and 2-3/4 inch backset. ## Overview The Prime-Line U 9592 Stainless Steel Lock and Door Reinforcer is a robust security upgrade designed to fortify the weak points around your door lock. Made from solid stainless steel, it fits standard 1-3/4 inch thick doors with a 2-1/8 inch bore and 2-3/4 inch backset. Easy to install with included hardware and pre-punched holes, this reinforcer enhances door durability against forced entry while maintaining a sleek, modern finish. ## Description Help prevent forced entry by reinforcing the weak spot of your door with the Defender Security U 9592 Stainless Steel Lock and Door Reinforcer. Use this lock plate to reinforce and repair both metal, fiberglass, and wood doors. Made of solid stainless steel, the reinforcement lock comes finished in stainless steel to fit over a single bore hole on your door. All the necessary mounting hardware is included with the metal reinforcement plate for a complete installation. It is pre-punched for mounting. Remove the protective film after installation. The reinforced door lock is designed for 1-3/4 inch thick doors that have a 2-1/8 inch bore hole with a 2-3/4 inch backset. The lock reinforcement is 4-5/16 inch wide by 4-1/2 inch tall with a 0.03 inch thickness. Make sure to dry fit the metal reinforced door lock reinforcer before permanently installing. Please refer to the line art drawing and compare with your needs before purchasing (not universal). Review: Used to repair door with bent knob hole - This was much thicker metal than I thought it would be. Very nice. Review: Good fit - Worked well to strengthen my door after someone tried to kick it in. ## Features - ADDED SECURITY – Prevent forced entry by reinforcing the weak spot of your door with the non-recessed door lock reinforcer; use to reinforce and repair both metal, fiberglass and wood doors - BUILT TO LAST – Made of solid stainless steel, the door lock reinforcement plate comes finished in stainless steel to fit over a single bore hole on your door - EASY INSTALLATION – All the necessary mounting hardware is included with the door reinforcement plate for a complete installation; it is pre-punched for mounting. Remove the protective film after installation - DIMENSIONS – The door reinforcement plate is designed for 1-3/4 inch thick doors that have a 2-1/8 inch bore hole with a 2-3/4 inch backset; the steel lock is 4-5/16 inch wide by 4-1/2 inch tall with a 0.03 inch thickness - NOTE – Make sure to dry fit the Defender Decurity door lock reinforcer before permanently installing; refer to the line art drawing and compare with your needs before purchasing (Not Universal) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00D2K3JIA | | Best Sellers Rank | #288,238 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,110 in Door Lock Replacement Parts | | Brand | Defender Security | | Brand Name | Defender Security | | Color | Stainless Steel | | Customer Reviews | 4.4 out of 5 stars 231 Reviews | | Exterior Finish | Stainless Steel | | Global Trade Identification Number | 00049793095923 | | Included Components | Lock and Door Reinforcer | | Installation Type | Screw-In | | Item Dimensions L x W x H | 4.5"L x 1.75"W x 4.5"H | | Item Type Name | Lock and Door Reinforcer | | Item Weight | 6.72 ounces | | Manufacturer | Prime-Line Products | | Manufacturer Part Number | U 9592 | | Manufacturer Warranty Description | Goods are warranted against manufacturing defects for 1 year. | | Material | Stainless Steel | | Material Type | Stainless Steel | | Model Number | U 9592 | | Product Dimensions | 4.5"L x 1.75"W x 4.5"H | | Recommended Uses For Product | Enhancing security and durability of doors in various settings | | Size | 1-3/4 " | | UPC | 049793095923 | | Unit Count | 1 Count | ## Images ![Prime-Line U 9592 Stainless Steel Lock and Door Reinforcer, 1-3/4 In. x 4-1/2 In., 2-1/8 In. Single Bore, 2-3/4 In. Backset, Silver (Single Pack) - Image 1](https://m.media-amazon.com/images/I/61N0kvUTzIL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Used to repair door with bent knob hole *by S***R on December 6, 2023* This was much thicker metal than I thought it would be. Very nice. ### ⭐⭐⭐⭐⭐ Good fit *by K***H on July 11, 2024* Worked well to strengthen my door after someone tried to kick it in. ### ⭐⭐⭐⭐ Sizing is off *by T***R on July 12, 2023* Sizing wasn’t perfect had to vent it to fit other then then great piece good quality --- ## 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.jp/products/20019111-prime-line-u-9592-stainless-steel-lock-and-door-reinforcer](https://www.desertcart.jp/products/20019111-prime-line-u-9592-stainless-steel-lock-and-door-reinforcer) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-30*