---
product_id: 551472572
title: "Sterling Int Ext BS1 ETN3535 Thumbturn Door Cylinder, Satin Nickel, Internal 35mm External 45mm (80mm Total)"
brand: "sterling"
price: "A$50"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/551472572-sterling-int-ext-bs1-etn3535-thumbturn-door-cylinder-satin-nickel
store_origin: AU
region: Australia
---

# 3 Keys Included Secured by Design Anti-Pick & Anti-Drill Sterling Int Ext BS1 ETN3535 Thumbturn Door Cylinder, Satin Nickel, Internal 35mm External 45mm (80mm Total)

**Brand:** sterling
**Price:** A$50
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in peace of mind with style!

## Quick Answers

- **What is this?** Sterling Int Ext BS1 ETN3535 Thumbturn Door Cylinder, Satin Nickel, Internal 35mm External 45mm (80mm Total) by sterling
- **How much does it cost?** A$50 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/551472572-sterling-int-ext-bs1-etn3535-thumbturn-door-cylinder-satin-nickel)

## Best For

- sterling enthusiasts

## Why This Product

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

## Key Features

- • **🏠 Versatile Fit:** Compatible with timber, composite, UPVC, and aluminum doors
- • **🔑 Keyed Convenience:** Includes 3 keys for easy access and management
- • **🔒 Ultimate Security:** Secured By Design Approved - Trusted by Police & Insurers
- • **🔧 Quality Assurance:** TS007 1* Kitemark - Tested to the highest British Standards
- • **🛡️ Advanced Protection:** Anti-Pick, Anti-Screw, Anti-Pull, Anti-Bump, and Anti-Drill features

## Overview

The SterlingInt Ext BS1 ETN3535 Thumbturn Door Cylinder is a high-security locking solution designed for various door types. With a satin nickel finish and robust anti-theft features, it meets the stringent Secured By Design standards, ensuring your property is well-protected. This cylinder includes three keys and is crafted from durable aluminum, making it both stylish and functional.

## Description

Sterling Int Ext BS1 ETN3535 Thumbturn Door Cylinder, Satin Nickel, Internal 35mm External 45mm (80mm Total)

## Features

- Secured By Design Approved Product - The Official UK Police Security Initiative. Recommended By The Police & Insurance Companies.
- TS007 1* Kitemark - Tested To The Very Highest Standards By BSi - British Standards Institution
- Anti-Pick, Anti-Screw, Anti-Pull, Anti-Bump and Anti-Drill components designed to resist to known attack methods on door lock cylinders
- Anti-Snap - sacrificial section leaves cylinder intact stopping thieves entering the property
- Suitable for use with a wide range of doors including timber, composite, UPVC, aluminium or patio doors with a Euro profile

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Sterling |
| Part number | 35mm Int 45mm Ext |
| Item Weight | 370 g |
| Product Dimensions | 9 x 1.5 x 2 cm; 370 g |
| Item model number | 35mm Int 45mm Ext |
| Size | Internal 35mm External 45mm (80mm Total) |
| Color | Satin Nickel |
| Style | Internal 35mm External 45mm (80mm Total) |
| Finish | Polished |
| Material | Aluminum |
| Shape | Round |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Special Features | Key Unlock |
| Included components | 3 Keys, Lock Cylinder |
| Batteries Required? | No |

## Images

![Sterling Int Ext BS1 ETN3535 Thumbturn Door Cylinder, Satin Nickel, Internal 35mm External 45mm (80mm Total) - Image 1](https://m.media-amazon.com/images/I/71ThDmr8TWL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- Sterling Int Ext BS1 ETN3535 Thumbturn Door Cylinder, Satin Nickel, Internal 35mm External 45mm (80mm Total)
- UPVC Door Handles Set - Black - Lever/Lever - 92mm PZ (Centres) - 122mm Screw to Screw - Backplate 212mm X 34mm- Black Replacement- PVC Door Handle

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**Shop now:** [https://www.desertcart.com.au/products/551472572-sterling-int-ext-bs1-etn3535-thumbturn-door-cylinder-satin-nickel](https://www.desertcart.com.au/products/551472572-sterling-int-ext-bs1-etn3535-thumbturn-door-cylinder-satin-nickel)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-10*