--- title: Hex Key Wrench Heads for TBIH & TBX-12 – FAQ & User Guide description: Learn about Mountz Hex Key Wrench Heads for TBIH and TBX-12 break-over torque wrenches, including compatibility, imperial and metric sizes, selection, and custom options. --- - Chat - [Contact Us](https://go.mountztorque.com/contact-us?_gl=1*1t1uhd0*_gcl_au*MjMwOTIyMTI2LjE2ODU1OTU4Mjc.&_ga=2.126080644.843342068.1685595827-2758410.1685595827&hsLang=en-us) - [Sign in](https://www.mountztorque.com/secure/checkout.ssp?is=login&login=T&fragment=login-register&hsLang=en-us) - [![mountztorque](https://mountztorque.com/hubfs/MO18001_Logo_H_Color_Tag_RGB.svg)](https://www.mountztorque.com/?hsLang=en) - North America:[(408) 850-9978](tel:4088509978) - International:[+44 1428 741756](tel:441428741756) - [Shop Products](https://www.mountztorque.com/Product-Type) - [Learning Center](https://www.mountztorque.com/Learning-Center) - [About Us](https://www.mountztorque.com/about-us) - [Service and Calibration](https://go.mountztorque.com/usa-service?_gl=1*1itcg2n*_gcl_au*MjMwOTIyMTI2LjE2ODU1OTU4Mjc.&_ga=2.172874026.843342068.1685595827-2758410.1685595827) [![Mountz\_Assets\_ConversionCalculator\_white](https://mountztorque.com/hubfs/Mountz_Assets_ConversionCalculator_white.svg) Conversion Calculator](https://www.mountztorque.com/torque-conversion-calculator?hsLang=en) [![Mountz\_Assets\_TorqueToolFinder\_white](https://mountztorque.com/hubfs/Mountz_Assets_TorqueToolFinder_white.svg) Torque Tool Finder](https://www.mountztorque.com/torque-conversion-calculator?hsLang=en) [Skip to content](https://mountztorque.com/en-us/knowledge-base/hex-key-wrench-heads-tbih-tbx-12#main-content) English - United States Show submenu for translations ![vast.png](https://mountztorque.com/hs-fs/hubfs/Mountz%20Logo%20-%20HS.png?width=413&height=135&name=Mountz%20Logo%20-%20HS.png) - [Sample Contact Page](https://5139817.hs-sites.com/sample-contact) - [Sample About Page](https://5139817.hs-sites.com/sample-about) - [Default HubSpot Blog](https://mountztorque-5139817.hs-sites.com/blog) Open main navigation Close main navigation - [Sample Contact Page](https://5139817.hs-sites.com/sample-contact) - [Sample About Page](https://5139817.hs-sites.com/sample-about) - [Default HubSpot Blog](https://mountztorque-5139817.hs-sites.com/blog) - English - United States Show submenu for translations - Contact us Contact us How can we help you? - There are no suggestions because the search field is empty. 1. [Mountz Torque Knowledge Base](https://mountztorque.com/en-us/knowledge-base?hsLang=en-us) 2. [Product Overviews](https://mountztorque.com/en-us/knowledge-base/product-overviews?hsLang=en-us) 3. [Torque Wrenches](https://mountztorque.com/en-us/knowledge-base/product-overviews?hsLang=en-us#torque-wrenches) # Hex Key Wrench Heads for TBIH & TBX-12 – FAQ & User Guide ## Mountz Hex Key Wrench Heads are interchangeable heads designed for compatible TBIH and TBX-12 break-over torque wrenches. Available in imperial and metric sizes, these heads provide firm engagement with hex-type fasteners for controlled fastening applications. ### Quick Answer Mountz Hex Key Wrench Heads attach to compatible TBIH and TBX-12 break-over torque wrenches and are used with hex-type fasteners. TBIH Hex Key Wrench Heads are available in imperial and metric sizes from **0.050" to 3/4" and 1.5 mm to 5 mm**, while TBX-12 Hex Key Wrench Heads are available from **1/16" to 1/4" and 1.5 mm to 5 mm**. --- ### What Are Hex Key Wrench Heads Used For? Hex Key Wrench Heads are designed to engage **hex-type fasteners**. These interchangeable heads provide firm engagement with hex fasteners and are available in multiple imperial and metric sizes to meet different fastening requirements. --- ### TBIH Hex Key Wrench Heads Mountz offers interchangeable Hex Key Wrench Heads for **TBIH break-over torque wrenches**. Available sizes include: - Imperial sizes from **0.050" to 3/4"** - Metric sizes from **1.5 mm to 5 mm** **View Hex Key Wrench Heads:** - [Hex Key Wrench Heads for TBIH](https://www.mountztorque.com/Product-Type/Torque-Wrenches/Torque-Wrenches-Wrench-Heads/Torque-Wrenches-Wrench-Heads-TBIH-Heads/Wrenches-Heads-Hex-Key-Heads-for-TBIH?hsLang=en-us) --- ### TBX-12 Hex Key Wrench Heads Mountz also offers interchangeable Hex Key Wrench Heads for **TBX-12 break-over torque wrenches**. **Available sizes include:** - Imperial sizes from **1/16" to 1/4"** - Metric sizes from **1.5 mm to 5 mm** Individual TBX-12 product pages confirm that these heads attach directly to the TBX-12 wrench. For example, the 3 mm model is listed as item **068652** and is specifically identified for attachment to the TBX-12. **View Hex Key Wrench Heads:** - [Hex Key Wrench Heads for TBX-12](https://www.mountztorque.com/Product-Type/Torque-Wrenches/Torque-Wrenches-Wrench-Heads/Torque-Wrenches-Wrench-Heads-TBX-Heads-Type-A/Torque-Wrenches-Wrench-Heads-TBX-Heads-Type-A-HK?hsLang=en-us) --- ### TBIH vs. TBX-12 Hex Key Wrench Heads Hex Key Wrench Heads are offered for both TBIH and TBX-12, but they should be selected based on the wrench platform they are designed to fit. | Wrench Platform | Hex Key Head Size Range | | --- | --- | | **TBIH** | 0.050" to 3/4"; 1.5 mm to 5 mm | | **TBX-12** | 1/16" to 1/4"; 1.5 mm to 5 mm | Do not assume that a head listed for one wrench platform is interchangeable with the other unless Mountz specifically identifies it as compatible. --- ### Selecting a Hex Key Wrench Head **When selecting a Hex Key Wrench Head, consider:** - Compatible torque wrench - Hex fastener size - Imperial or metric sizing - Published product specifications for the individual head Select a head that matches both the fastener and the wrench platform being used. For torque range requirements, refer to the published product specifications for each individual head or consult the [Torque Wrench Head Selection Guide](https://online.flippingbook.com/view/461496461/). --- ### Can Custom Wrench Heads Be Requested? Mountz states that it accommodates **custom wrench head requests** for specialized requirements. If a standard Hex Key Wrench Head does not meet your application requirements, [contact Mountz](https://mountztorque.com/en-us/contact-us?hsLang=en-us) to discuss a custom solution. --- ### Media & Supporting Content ![Mountz Hex Key Wrench Head – Front View](https://mountztorque.com/hs-fs/hubfs/hexkeyxmedium_01.mainview.jpg?width=500&height=500&name=hexkeyxmedium_01.mainview.jpg) ![Mountz Hex Key Wrench Head – Side View](https://mountztorque.com/hs-fs/hubfs/tbx-hx-hd-lg%20_02.sideview.jpg?width=500&height=500&name=tbx-hx-hd-lg%20_02.sideview.jpg)                       - [Wrench Heads](https://www.mountztorque.com/Product-Type/Torque-Wrenches/Torque-Wrenches-Wrench-Heads?hsLang=en-us) - [Torque Wrench Head Selection Guide](https://online.flippingbook.com/view/461496461/) --- ### Related Content - [Open, Box & Flare Wrench Heads for TBIH & TBX-12 FAQ](https://online.flippingbook.com/view/461681113/) - [TBIH Break-Over Torque Wrenches](https://www.mountztorque.com/Product-Type/Torque-Wrenches/Torque-Wrenches-Break-Over-Wrenches/Torque-Wrenches-Break-Over-Wrenches-TBIH?hsLang=en-us) - 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