---
product_id: 47934634
title: "ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Deadlock - Chrome Effect, Grey"
brand: "era"
price: "A$86"
currency: AUD
in_stock: true
reviews_count: 8
category: "Era"
url: https://www.desertcart.com.au/products/47934634-era-fortress-bs-3621-2-5-inch-64mm-5-lever
store_origin: AU
region: Australia
---

# 5-lever max security 20mm anti-saw deadbolt Hardened steel drill-resistant plates ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Deadlock - Chrome Effect, Grey

**Brand:** era
**Price:** A$86
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in your safety, unlock your peace of mind.

## Quick Answers

- **What is this?** ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Deadlock - Chrome Effect, Grey by era
- **How much does it cost?** A$86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/47934634-era-fortress-bs-3621-2-5-inch-64mm-5-lever)

## Best For

- era enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Upgrade:** Fits seamlessly into existing doors with no handles required—easy install for instant fortress-level security.
- • **Pick-Proof Precision:** Advanced 5-lever mechanism engineered to foil lock picking and unauthorized access.
- • **Unbreakable Deadbolt:** 20mm laminated hardened steel bolt resists hacksaws and forced entry attempts.
- • **Drill-Resistant Armor:** Hardened steel case plates designed to withstand drill attacks and tampering.
- • **Insurance-Approved Security:** Certified BS3621 standard trusted by insurers & police for ultimate peace of mind.

## Overview

The ERA Fortress BS 3621 Mortice Deadlock delivers maximum security with a 5-lever mechanism certified to British Standard 3621, featuring a 20mm laminated hardened steel deadbolt and drill-resistant steel plates. Designed for external timber and composite doors, it’s insurance-approved and pick-resistant, offering a robust upgrade from standard locks without requiring door handles. Trusted for over 150 years, ERA ensures your property stays secure with a smooth, reliable locking action.

## Description

ERA Fortress British Standard 3621 5 Lever Maximum Security Deadlocks are recommended for External timber and composite doors. The BS 3621 standard is recognised as giving the maximum protection for home and commercial use, approved by Insurance companies and the Police. The laminated steel Deadbolt helps to prevent hacksaw attacks. The Deadbolt has a 20mm throw for greater security. Hardened steel plates on the casing prevent drill attacks. The 5 Lever mechanism is designed to prevent lock picking. ERA Fortress locks are ideal for use in new doors or upgrading security from 2 and 3 lever door locks. Deadlocks do not require door handles. ERA Locks have been providing high quality home and business security products for over 150 years. ERA is one of the UK's most recognised Lock brands providing you with the peace of mind that your property and possesions are locked up safe and sound. ERA Locks are approved by Insurance companies. The extensive range of products includes, Nightlatches, Mortice Locks, Window Locks, Cylinders, UPVC and Composite door locks, Digital Door Locks & Wordlock Padlocks.

Review: A solid must have 5 lever mortice lock - Good lock for the money. Replaced an old lock with this new one. The lock fitted in the door without any modification to the wood. The other metal part the lock turns into was bigger than the old one so the door frame needed chisling out a little bigger. Basically just a few mm along the top and down one side so the plate would sit in flush as it is slightly taller and wider than the old plate it replaced. It came with 2 keyhole covers and some screws. The big screws I replaced with some bigger ones with stronger heads as the supplied screws rounded out on me as I didn't have a drill. I used bigger and longer screws for better strength. You really should have a mortice lock on a door if you only have a Yale type lock then I suggest you should get a mortice lock if you don't have one. Yale locks can be broken into far too easily in a few ways. A mortice lock is a lot more secure and stronger. For the money it's a really solid lock. You'd have to break the whole door down to get in now. I would also advise to have half decent chisel and a hammer so you can do a neat job of fitting it. It's not hard to do. Easy with a sharp chisel say about a 1" width will do just so you can fit the side plate on. If it's the same size as the old plate then you can do a straight swap or just leave the old plate fitted. The lock fitted solidly and my door is very solid and secure now. If fitting from scratch you'll obviously need all the proper tools or a lock smith or carpenter to do it for you. It arrived quickly in only a few days time. I ordered from Richards Builders Merchants based in the UK here on desertcart UK. I choose these as it was the best price and I did not use Prime. The item was new, boxed, complete and it came supplied with 2 keys.
Review: A beast of a lock for high security applications - These are very substantial locks, with a good key action and they're very easy to install. I used a 22mm wood drill (Bosch Pro range, as for sale on desertcart) and got the frame and door apertures cut quickly. The lock itself comes with a front cover plate so you don't actually see the red body paint when installed, just a bright chrome plate which matches the one you fit to the door frame. A very smooth key-turn action, and the bolt has a LONG travel that means it goes into the door frame a long way. The lock comes with a keyhole plate for the inside of the door, and a covered key plate for the outer door face to keep the rain out. The lock has an extra quarter-turn at each end to retain the keys in the lock in either direction. The screws supplied for the lock and frame plate are also substantial. Nice and long, with a large diameter but they didn't split the wood in the frame or door when I installed them. They seem to go in really tight, adding to the impression that you've purchased a very high security lock. It's got to be 5 stars for how substantial this unit is, how easy it is to fit, how smooth the lock action is and the overall impression of added security you're getting.

## Features

- Certified to BS3621 - Approved by all insurance companies
- Laminated hardended steel, 20mm, anti saw deadbolt.
- Hardened steel case plates - Resists drill attacks.
- Pick resistant mechanism
- No handles required

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0074JFWQM |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 76,885 in DIY & Tools ( See Top 100 in DIY & Tools ) 70 in Mortise Locks 98 in Lock Cylinders 1,490 in Home Security Systems |
| Colour | Grey |
| Customer Reviews | 4.4 4.4 out of 5 stars (298) |
| Date First Available | 2 Feb. 2012 |
| Finish | Laminated,Chrome |
| Included Components | ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Deadlock - Chrome Effect |
| Item Package Quantity | 1 |
| Item Weight | 690 g |
| Item model number | 261-61 |
| Manufacturer | ERA |
| Material | Chrome |
| Measurement System | CM |
| Number of Pieces | 1 |
| Part Number | 261-61 |
| Product Dimensions | 19.4 x 11.4 x 3.4 cm; 690 g |
| Shape | Rectangular |
| Size | 19.4 x 11.4 x 3.4 cm |
| Special Features | Key Unlock |
| Style | Orignal Packaging |

## Product Details

- **Brand:** ERA
- **Item dimensions L x W x H:** 19.4 x 11.4 x 3.4 centimetres
- **Lock type:** Key Lock
- **Material:** Chrome
- **Special feature:** Key Unlock

## Images

![ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Deadlock - Chrome Effect, Grey - Image 1](https://m.media-amazon.com/images/I/41lsw0ympkL.jpg)
![ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Deadlock - Chrome Effect, Grey - Image 2](https://m.media-amazon.com/images/I/61HSZbkU2eL.jpg)

## Available Options

This product comes in different **Item Package Quantity, Style** options.

## Questions & Answers

**Q: Can these be keyed alike for multi lock purchase**
A: Amazon is a fulfilment house -- if you want matching key sets you will have to go to a specialist locksmith or lock supplier and pay the premium prices.

**Q: What is the minimum door thickness this can be installed in please?**
A: It's for front door

**Q: is this lock suitable for a timber door?**
A: I fitted this lock on a timber fire door, works perfectly, easy to fit

**Q: Is  this product Kitemarked to BS 3621**
A: Yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ A solid must have 5 lever mortice lock
*by M***K on 20 September 2018*

Good lock for the money. Replaced an old lock with this new one. The lock fitted in the door without any modification to the wood. The other metal part the lock turns into was bigger than the old one so the door frame needed chisling out a little bigger. Basically just a few mm along the top and down one side so the plate would sit in flush as it is slightly taller and wider than the old plate it replaced. It came with 2 keyhole covers and some screws. The big screws I replaced with some bigger ones with stronger heads as the supplied screws rounded out on me as I didn't have a drill. I used bigger and longer screws for better strength. You really should have a mortice lock on a door if you only have a Yale type lock then I suggest you should get a mortice lock if you don't have one. Yale locks can be broken into far too easily in a few ways. A mortice lock is a lot more secure and stronger. For the money it's a really solid lock. You'd have to break the whole door down to get in now. I would also advise to have half decent chisel and a hammer so you can do a neat job of fitting it. It's not hard to do. Easy with a sharp chisel say about a 1" width will do just so you can fit the side plate on. If it's the same size as the old plate then you can do a straight swap or just leave the old plate fitted. The lock fitted solidly and my door is very solid and secure now. If fitting from scratch you'll obviously need all the proper tools or a lock smith or carpenter to do it for you. It arrived quickly in only a few days time. I ordered from Richards Builders Merchants based in the UK here on Amazon UK. I choose these as it was the best price and I did not use Prime. The item was new, boxed, complete and it came supplied with 2 keys.

### ⭐⭐⭐⭐⭐ A beast of a lock for high security applications
*by J***N on 20 January 2024*

These are very substantial locks, with a good key action and they're very easy to install. I used a 22mm wood drill (Bosch Pro range, as for sale on Amazon) and got the frame and door apertures cut quickly. The lock itself comes with a front cover plate so you don't actually see the red body paint when installed, just a bright chrome plate which matches the one you fit to the door frame. A very smooth key-turn action, and the bolt has a LONG travel that means it goes into the door frame a long way. The lock comes with a keyhole plate for the inside of the door, and a covered key plate for the outer door face to keep the rain out. The lock has an extra quarter-turn at each end to retain the keys in the lock in either direction. The screws supplied for the lock and frame plate are also substantial. Nice and long, with a large diameter but they didn't split the wood in the frame or door when I installed them. They seem to go in really tight, adding to the impression that you've purchased a very high security lock. It's got to be 5 stars for how substantial this unit is, how easy it is to fit, how smooth the lock action is and the overall impression of added security you're getting.

### ⭐⭐⭐⭐⭐ Good choice.
*by B***O on 15 September 2024*

Bought to replace exactly same item which sadly conked out after 8 years. I can't complain, as my old lock was used constantly 3\4+ times every single day. Occasional use will obviously extend lock life cycle. To change over new lock from the old was a 2 minute job. Easy. Only negative is 2 keys. I would have preferred 3 but can get one cut relatively cheap locally. The price for this item was the best I could find anywhere here on Amazon...Great deal.

## Frequently Bought Together

- ERA Fortress BS 3621 2.5-inch/ 64mm 5 Lever Maximum Security Mortice Deadlock - Chrome Effect, Grey
- ERA 1930-35-1 60mm Maximum Security BS Nightlatch with Satin Chrome Body , Grey

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-25*