---
product_id: 555748380
title: "Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish"
brand: "sumnacon"
price: "¥20360"
currency: JPY
in_stock: false
reviews_count: 5
category: "Sumnacon"
url: https://www.desertcart.jp/products/555748380-sumnacon-2pcs-door-flush-bolts-8-inch-concealed-security-door
store_origin: JP
region: Japan
---

# 8-inch solid stainless steel automatic holding spring tension rustproof screws included Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish

**Brand:** sumnacon
**Price:** ¥20360
**Availability:** ❌ Out of Stock

## Summary

> 🔐 Elevate your door security with sleek, silent strength!

## Quick Answers

- **What is this?** Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish by sumnacon
- **How much does it cost?** ¥20360 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/555748380-sumnacon-2pcs-door-flush-bolts-8-inch-concealed-security-door)

## Best For

- sumnacon enthusiasts

## Why This Product

- Trusted sumnacon brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual-Point Security:** Recommended installation at both top and bottom of inactive door leaf for maximum stability and peace of mind.
- • **Effortless Lever Control:** Innovative lever switch offers smooth, comfortable operation—no more fumbling with push-slide bolts.
- • **Complete Installation Kit:** Includes rustproof screws and strikes for quick, hassle-free setup that locks in safety instantly.
- • **Seamless Concealed Design:** Flush-mounted for a sleek, modern look that blends perfectly with French, composite, or wood doors.
- • **Solid Stainless Steel Durability:** Engineered from heavy-duty stainless steel for unmatched rust resistance and long-lasting security.

## Overview

The Sumnacon 2Pcs Door Flush Bolts are precision-machined 8-inch stainless steel locks designed for French, composite, wood, and double doors. Featuring an automatic holding spring and a smooth lever mechanism, these rustproof bolts provide concealed, dual-point security for inactive door leaves. Complete with screws and strikes, they offer an easy installation process and a modern aesthetic that enhances both safety and style.

## Description

Flush bolt is great especially to jamb on French, patio, wood, double or other composite doors, offers concealed locking for dummy doors and inactive doors.Constructed from solid material, it's sturdy and reliable enough for residential daily using.This mechanism comes with reasonable interior design, do not worry about felling apart suddenly when using.With comfortable touching and concealed style, it will surely offer you enjoyable usage and perfectly finished to complement your decor. Recommend to purchase two for top and bottom of the door.Specification: Material: Stainless Steel Color: Silver Size: Length=8"(20cm), Width=0.79"(2cm), Depth = 0.67"(1.7cm) Available for: Composite ,French, Dummy DoorsPackage Included: 2 x 8 Inch Door Flush Bolts8 x Screws 2 x Strikes Installation Instruction: 1. Figure out where to install the flush bolt(usually on inactive leaf of double door opening) and drill grooves. 2. Install the flush bolt on the door leaf and tighten each screw. 3. Line up strikes on the door frame or on the floor and drill holes, then tighten each screw. 4. Close the door, put the pin into the hole, done.

Review: these were to replace an old set that broke after many years of use. Very happy to find the exact replacement.
Review: Bon produit!

## Features

- Flush bolt can be used to secure the opening for composite door, French, patio, wood, double or other doors. This great small device features automatic holding spring to provide tension for both retracted and projected positions. It often be installed on inactive leaf of double door opening (top and bottom) to offer safety function.
- Our flush bolts are all machined from solid stainless steel for anti corrosive and rustproof, heavy duty and sturdy. Installing a flush bolt to make a nice addition to security of your home.
- Size : Length=8"(20cm), Width=0.79"(2cm), Depth = 0.67"(1.7cm). The interior part of the flush bolt is reinforced by screws to enhance stability and fluency of the structure. Install on inactive leaf of double door opening.
- Integrated design of the switch is easy for daily use, Say goodbye to the one with "push just ride and slide" type, this lever type with comfortable touching and concealed style will surely offer you enjoyable usage and match your modern decoration.
- Easy to install,comes with rust-proof screws and surface strikes for installation. Constructed from stainless steel, screws will provide extra strength to engage and interlock firmly so as to be immobile.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0773JN2H2 |
| Best Sellers Rank | #121,030 in Home Improvement ( See Top 100 in Home Improvement ) #952 in Latches & Bolts |
| Brand | SUMNACON |
| Colour | Silver |
| Control Method | Touch |
| Controller Type | key control |
| Finish Type | stainless steel finish |
| Included Components | Screws, User Manual |
| Item Weight | 272 g |
| Item model number | ULSMC01024 |
| Lock Type | Deadbolt |
| Manufacturer | Sumnacon |
| Material | Stainless Steel |
| Net Quantity | 2 Count |
| Number of Pieces | 2 |
| Package Dimensions | 20.7 x 3.99 x 2.39 cm; 272.16 g |
| Recommended Uses For Product | Securing French doors, patio doors, wood doors, and double doors; concealed locking for dummy doors and inactive doors |
| Shape | Rectangular |
| Special Feature | Rustproof |
| Style | French |
| UPC | 736140224319 |

## Product Details

- **Brand:** SUMNACON
- **Lock Type:** Deadbolt
- **Material:** Stainless Steel
- **Special Feature:** Rustproof

## Images

![Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish - Image 1](https://m.media-amazon.com/images/I/410vgkZCf0L.jpg)
![Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish - Image 2](https://m.media-amazon.com/images/I/4168ZRla4pL.jpg)
![Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish - Image 3](https://m.media-amazon.com/images/I/41PeWafRDaL.jpg)
![Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish - Image 4](https://m.media-amazon.com/images/I/41hRJoMM0rL.jpg)
![Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish - Image 5](https://m.media-amazon.com/images/I/41hXH+xZBFL.jpg)

## Questions & Answers

**Q: Can this be installed in the active door of a steel french door?**
A: Yes, that's how I installed mine.

**Q: How does one even install these?**
A: I made a jig with plywood, then pin-nailed it to the doors edge. Set the depth and go at it. Last, clean up the corners with a chisel. Now you’re ready to install the locking mechanism.

**Q: Is the bolt stainless steel as well? screws? are all components stainless and suitable for outdoor use?**
A: Appears to be stainless steel.

**Q: Is this marine grade stainless steel for use on the coast?**
A: Cheap Chinese stainless steel. But for the price it should work

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by V***K on 17 February 2021*

these were to replace an old set that broke after many years of use. Very happy to find the exact replacement.

### ⭐⭐⭐⭐⭐ Review
*by C***. on 9 December 2025*

Bon produit!

### ⭐⭐⭐⭐⭐ Review
*by R***S on 29 June 2025*

item as described did the job well

## Frequently Bought Together

- Sumnacon 2Pcs Door Flush Bolts - 8 Inch Concealed Security Door Locks for French Doors,Composite Doors,Wood Doors,Double Doors,Dummy Doors,Brush Stainless Steel Finish
- Ceoighe 2 Pack Flush Bolt for Double Door, 7 Inch Heavy Duty Chrome Plating Flush Latch Bolts, French Door Lock for Inactive Leaf, Double Door Opening and Composite Wood Double Dummy Door

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-02*