---
title: "Lock 4 Icon | Free Download PNG & SVG | Ultimate Duotone"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/lock-4--15799
canonical_url: "https://www.streamlinehq.com/icons/download/lock-4--15799"
summary: "Clean duotone icon of a padlock with a split-color circular body and keyhole. Used for security, privacy, and access controls."
---

# Lock 4 icon

The Lock 4 icon shows a rounded padlock with an arched shackle, a split-color circular lock body, and a central keyhole. Drawn in the duotone style on a 24px grid with a 1px stroke so its layered color contrast stays clear at small sizes. Use it for security interfaces, privacy settings, login screens, access controls, and protected content. It belongs to Ultimate Duotone set in the Ultimate family.

## Preview

![Clean duotone icon of a padlock with a split-color circular body and keyhole. Used for security, privacy, and access controls.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/streamline-duotone/interface-essential/lock-unlock/lock-4-hfq6mcn5rsc3ok81x2eg0g.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Lock 4
- **Type**: Icon
- **Set**: [Ultimate Duotone](/icons/streamline-duotone.md) — Ultimate is the world’s largest icon family, designed by 8 expert designers. The Duotone style enhances visual depth by combining colored lines and filled shapes, perfect for matching brand or project colors. Key advantages: 1—Customizable colors. Apply up to four different colors to icon elements. 2— Adjustable stroke thickness. Create looks ranging from thin to bold for varied aesthetics.
- **Family**: [Ultimate](/icons/ultimate-sets.md) — The encyclopedia of icons
- **Style**: Duo, Stroke, Filled
- **Category**: Interface Essential › Lock Unlock
- **Default size**: 24px
- **Stroke width**: 1px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: lock, locked, unlock, keyhole, secure, security, padlock, protection, safety, privacy, guard, safeguard, encrypted, password, combo, key, lock unlock, combination, circle, round

## Download

- [Download Lock 4 on Streamline](https://www.streamlinehq.com/icons/download/lock-4--15799)

## Also available in other styles

- [Lock 4 — Ultimate Colors](/icons/download/lock-4--19594.md) (Pro)
- [Lock 4 — Ultimate Regular](/icons/download/lock-4--8995.md) (Pro)
- [Lock 4 — Ultimate Bold](/icons/download/lock-4--7533.md) (Pro)
- [Lock 4 — Ultimate Light](/icons/download/lock-4--8264.md) (Pro)

---

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