--- product_id: 77280081 title: "Prime-Line U 10307 Surface Bolt, 4 in., Solid Brass, Classic Bronze Finish, Single Pack | Single Pack" brand: "defender security" price: "¥1717" currency: JPY in_stock: true reviews_count: 13 category: "Defender Security" url: https://www.desertcart.jp/products/77280081-prime-line-u-10307-surface-bolt-4-in-solid-brass store_origin: JP region: Japan --- # 4-inch solid brass bolt dual mounting options easy DIY install Prime-Line U 10307 Surface Bolt, 4 in., Solid Brass, Classic Bronze Finish, Single Pack | Single Pack **Brand:** defender security **Price:** ¥1717 **Availability:** ✅ In Stock ## Summary > 🔐 Secure your space with style and simplicity! ## Quick Answers - **What is this?** Prime-Line U 10307 Surface Bolt, 4 in., Solid Brass, Classic Bronze Finish, Single Pack | Single Pack by defender security - **How much does it cost?** ¥1717 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/77280081-prime-line-u-10307-surface-bolt-4-in-solid-brass) ## 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 - • **Compact Yet Powerful:** 4-inch length fits discreetly while delivering reliable locking strength. - • **Effortless Installation:** Includes both surface mount and mortise-style keepers for a foolproof, quick setup. - • **Versatile Security, Your Way:** Mount vertically or horizontally to secure doors, cabinets, or closets with ease. - • **Child & Pet Proofing Made Stylish:** Keep curious toddlers and pets safe with a lock that blends seamlessly into your home décor. - • **Built to Last, Designed to Impress:** Solid brass construction with a classic bronze finish ensures durability and timeless appeal. ## Overview The Prime-Line U 10307 Surface Bolt is a 4-inch solid brass slide bolt featuring a classic bronze finish. Designed for versatile mounting—vertical or horizontal—it includes both surface mount and mortise-style keepers for flexible installation. Ideal for child and pet proofing, it combines durable construction with an attractive look, making it a reliable and stylish security solution for doors, cabinets, and closets. ## Description Whether you are trying to keep your toddler from opening the basement door, adding an attractive and functional enhancement to your closet doors or securing cabinets in your RV, the Prime-Line surface bolt is the versatile locking solution. Easy to install and constructed of durable solid brass, the 4 inch long surface bolt can be mounted horizontally or vertically and includes a surface mount keeper and a mortise-style keeper to accommodate a variety of applications. With a bronze finish, the surface bolt is not only effective, it’s attractive too. It’s a great alternative to traditional child (and pet) proofing products that can be hard to install and not complementary to your home décor. You can install the surface bolt out of the reach of curious little hands, so babies, toddlers and young kids cannot enter or exit into dangerous areas or go through cabinets and closets without supervision. Review: strong and reliable - great build quality, easy install, perfect fit Review: Works well, looks good, easy to install - I got a set of these to use as bedroom door locks (didn't need anything secure). The metal looks and feels nice, they slide easily, and I was able to install it into a very solid old wood door frame without issue. As long as you read the instructions and mark your holes it is pretty much foolproof. I read other reviews with issues with the screws and with the latch not sliding over the screws all the way. My order did not have either problem. I like how they include both mounting options as well! ## Features - VERSATILE SURFACE LOCK – The U 10307 Surface Bolt can be mounted vertically or horizontally and is effective for keeping doors, cabinets and closets closed, deterring kids and pets from getting in or out from certain areas of your home, and so much more. - GREAT FOR CHILD PROOFING – The surface bolt lock is a great alternative to traditional products to baby and child proof your home. It can be installed out of the reach of inquisitive toddlers and adds a level of security to many areas of your home. Great for pet-proofing too! - EASY INSTALLATION – Installation is quick and easy! The surface bolt includes a surface mount keeper and a mortise-style keeper to accommodate a variety of applications. - DURABLE CONSTRUCTION – The surface bolt lock is constructed from solid brass with an attractive classic bronze finish. It is built to last. - PRODUCT INFO – The U 10307 Surface Bolt is 4” in length and includes two different keepers for surface or mortise installations. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00404K476 | | Best Sellers Rank | #57,622 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #137 in Door Latches & Bolts | | Brand | Defender Security | | Color | Bronze | | Customer Reviews | 4.5 out of 5 stars 588 Reviews | | Drive System | Manual | | Exterior Finish | Bronze | | Fastener Type | Hexagon Bolt | | Finish Types | Classic Bronze | | Global Trade Identification Number | 00049793103079 | | Head Style | Round | | Head Type | Hex | | Included Components | Slide Bolt | | Item Dimensions | 0.75 x 4 x 1.62 inches | | Item Hardness | Rockwell B70 | | Item Type Name | Slide-bolt | | Item Weight | 0.2 Pounds | | Manufacturer | Prime-Line Products (Home Improvement) | | Manufacturer Grade | standard | | Material | Brass | | Material Type | Brass | | Metal Type | Brass | | Model | U 10307 | | Number Of Items | 1 | | Number of Pieces | 1 | | Part Number | U 10307 | | Screw Head Style | Round | | Set Screw Thread Type | Unified National Coarse (UNC) | | Size Name | 1 Count (Pack of 1) | | Thread Coverage | Double End Threaded | | Thread Style | Right Hand | | Thread Type | Unc | | UPC | 049793103079 | | Unit Count | 1.0 Count | | Warranty Description | Goods are warranted against manufacturing defects for 1 year. | ## Images ![Prime-Line U 10307 Surface Bolt, 4 in., Solid Brass, Classic Bronze Finish, Single Pack | Single Pack - Image 1](https://m.media-amazon.com/images/I/51e58HyWZdL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Can this work for double pantry doors? French doors?** A: I don’t think it would be the best for double doors. The sliding part of the latch goes in to the lock at a perpendicular angle, like a T, so it would best be mounted on a doorframe or wall rather than a second door. **Q: Can the bolt be slid out of the slide when moving it into the unlocked position? Or does it have a positive stop that prevent this?** A: Yes, it has a stop. It will not slide out in the unlocked position. ## Customer Reviews ### ⭐⭐⭐⭐⭐ strong and reliable *by B***Y on September 22, 2024* great build quality, easy install, perfect fit ### ⭐⭐⭐⭐⭐ Works well, looks good, easy to install *by J***E on January 15, 2019* I got a set of these to use as bedroom door locks (didn't need anything secure). The metal looks and feels nice, they slide easily, and I was able to install it into a very solid old wood door frame without issue. As long as you read the instructions and mark your holes it is pretty much foolproof. I read other reviews with issues with the screws and with the latch not sliding over the screws all the way. My order did not have either problem. I like how they include both mounting options as well! ### ⭐⭐⭐⭐⭐ Solid Brass Security *by P***S on November 17, 2025* Beautiful polished brass finish on all the parts included for an easy installation. Solidly built for added front door security at very reasonable price.. ## Frequently Bought Together - Prime-Line U 10307 4 In. Surface Bolt, Classic Bronze Finish (Single Pack) - Amazon Basics Sturdy Rounded 5/8 Radius Interior Door Hinges, 3.5" x 3.5", 18 Pack, Matte Black - HOMOTEK 12 Pack Spring Door Stopper with Rubber Bumper Satin Nickel 3-1/8" Flexible Spring Heavy Duty Wall Door Stop Low Mounted Door Bumper for Home (Oil Rubbed Bronze) --- ## 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/77280081-prime-line-u-10307-surface-bolt-4-in-solid-brass](https://www.desertcart.jp/products/77280081-prime-line-u-10307-surface-bolt-4-in-solid-brass) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-20*