--- title: S-Series Run-Down Adapters – FAQ & User Guide description: Learn how Mountz S-Series Run-Down Adapters simulate fastening conditions to improve torque testing, tool verification, calibration, and quality control processes. --- - 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/s-series-run-down-adapters-faq#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. [Run Down Adapters](https://mountztorque.com/en-us/knowledge-base/product-overviews?hsLang=en-us#run-down-adapters) # S-Series Run-Down Adapters – FAQ & User Guide ## The Mountz S-Series Run-Down Adapters are designed to simulate the characteristics of a threaded fastening application during torque testing and verification. Used with compatible Mountz torque analyzers and sensors, S-Series adapters help create repeatable testing conditions that more closely represent actual assembly applications. They are commonly used for power tool testing, torque verification, calibration, and quality control programs. ### Quick Answer S-Series Run-Down Adapters simulate a fastening application during torque testing by providing controlled rundown characteristics. When used with compatible Mountz torque analyzers and sensors, they help improve the consistency and repeatability of torque verification and calibration activities. --- ### Who This Is For - Quality engineers - Manufacturing engineers - Process engineers - Calibration technicians - Metrology laboratories - Production teams - Companies implementing torque verification programs - Facilities performing in-house tool testing and calibration --- ### When Should You Use This? **Use an S-Series Run-Down Adapter when:** - Testing torque-controlled power tools - Verifying fastening tool performance - Performing calibration activities - Simulating a fastening application - Conducting quality control inspections - Establishing repeatable torque testing procedures --- ### When Should You NOT Use This? **An S-Series Run-Down Adapter may not be necessary when:** - Tool testing is not being performed - A simulated fastening application is not required - Torque verification is not part of the process - The adapter is not compatible with the torque range being tested --- ### How S-Series Run-Down Adapters Work An S-Series adapter is installed between the torque tool and a compatible torque sensor during testing. The adapter provides a controlled rundown condition that simulates the resistance encountered in a fastening application before final torque is achieved. This helps create a more representative testing environment than applying torque directly into a rigid testing setup. **Result:** - More realistic torque testing - Improved repeatability - Better simulation of assembly conditions - Consistent torque verification results --- ### Core Features - Simulates fastening application conditions - Provides repeatable testing results - Compatible with Mountz torque analyzers and sensors - Supports torque verification programs - Suitable for calibration and testing applications - Designed for power tool testing - Available in multiple torque capacities --- ### Configuration Options #### Multiple Capacities Available S-Series adapters are available in multiple capacities to support different testing requirements and torque ranges. #### Sensor Compatibility S-Series adapters are designed for use with compatible Mountz torque sensors and analyzers. #### Application Flexibility **S-Series adapters can be used for:** - Power tool testing - Torque verification - Calibration activities - Quality control inspections - Production testing programs --- ### Understanding S-Series Run-Down Adapters #### What Is an S-Series Run-Down Adapter? An S-Series Run-Down Adapter is a testing accessory designed to simulate the rundown characteristics of a fastening application during torque testing. The adapter allows the tool to run down before final torque is reached, helping create a more representative test condition. #### Why Use an S-Series Adapter? Many fastening tools perform differently when tested against a hard surface than they do in an actual assembly application. An S-Series adapter helps create a more realistic testing condition by simulating the rundown portion of the fastening cycle. #### What Makes the S-Series Different? The S-Series combines the following features to support testing and calibration applications: - Simulated rundown conditions - Repeatable testing results - Compatibility with Mountz torque analyzers - Compatibility with Mountz torque sensors - Support for torque verification programs --- ### Understanding Run-Down Testing #### Why Is Run-Down Testing Important? When verifying torque-controlled tools, it is often desirable to recreate conditions that are similar to the actual assembly process. Run-down adapters help create a more representative testing environment by allowing the tool to operate through a rundown cycle before reaching final torque. #### Benefits of Simulated Run-Down Conditions **Using a run-down adapter can help:** - Improve testing consistency - Improve repeatability - Support quality control initiatives - Create more representative testing conditions --- ### Available Models The S-Series Run-Down Adapter family is designed to simulate a **soft joint** when testing power-driven torque control tools. Each model is designed for a specific torque range and is mounted inline between the tool and a compatible Mountz torque analyzer or transducer to provide consistent, repeatable torque readings. --- ### How S-Series Models Are Specified Each S-Series model is identified by its operating torque range. Select the model whose torque range best matches the output of the tool being tested. **All S-Series adapters:** - Simulate a soft-joint fastening application - Operate in the clockwise direction only - Feature a non-rotating body for improved safety - Mount inline between the tool and transducer - Must be completely backed up (rotated counter-clockwise to its original starting position) after each run-down before the next test --- ### Model Selection Guide #### Need a run-down adapter for micro-torque electric screwdrivers? **Choose:** - RDA-S0 - RDA-S1.5 These models are intended for very low-torque fastening applications and for precision electric screwdrivers. --- #### Need an adapter for low-torque assembly tools? **Choose:** - RDA-S10 - RDA-S15 These models are commonly used for electronics assembly and low-torque production fastening. --- #### Need medium torque testing? **Choose:** - RDA-S75 - RDA-S200 These models support higher-capacity electric screwdrivers and production fastening applications. --- #### Need high torque testing? **Choose:** - RDA-S400 - RDA-S600 These models are intended for higher-torque electric fastening tools and production applications. --- ### Need compatibility with Mountz torque analyzers? Choose any S-Series model. All S-Series adapters are designed for use with compatible Mountz torque analyzers and transducers for testing power-driven torque control tools. --- ### S-Series Models | Model | Item Number | Torque Range (lbf.in) | Metric Range | Input Drive | Output Drive | | --- | --- | --- | --- | --- | --- | | RDA-S0 | 070844 | 0.3–3 | 3.4–33.9 cN·m | 1.5 mm Hex | 1/4" Female Square | | RDA-S1.5 | 070845 | 0.5–5 | 5.6–56.5 cN·m | 2.5 mm Hex | 1/4" Female Square | | RDA-S10 | 070835 | 1–6.1 | 11.3–68.6 cN·m | 4 mm Hex | 17 mm Hex | | RDA-S15 | 070833 | 2.1–11.5 | 25.5–129.5 cN·m | 6 mm Hex | 17 mm Hex | | RDA-S75 | 070834 | 6.9–52.1 | 78.5–588.4 cN·m | 6 mm Hex | 17 mm Hex | | RDA-S200 | 070840 | 15.6–121.5 | 1.8–13.7 N·m | 6 mm Hex | 17 mm Hex | | RDA-S400 | 070839 | 48.6–286.4 | 5.5–32.4 N·m | 10 mm Hex | 17 mm Hex | | RDA-S600 | 070841 | 48.6–434 | 5.5–49 N·m | 10 mm Hex | 17 mm Hex | --- ### Which S-Series Model Should I Select? **Start with these questions:** - What torque range will be tested? - Is the application micro-, low-, medium-, or high-torque? - What input drive size does the tool use? - Is the adapter compatible with the connected torque analyzer or transducer? - Is the tool being tested a power-driven torque control tool? - Does the application require soft-joint simulation? The answers to these questions will help determine the appropriate S-Series model for the application. --- ### Setup & Adjustment **To use an S-Series Run-Down Adapter:** 1. Confirm the correct S-Series model is selected for the tool's torque range, then connect the adapter inline between a compatible Mountz transducer and the torque tool. 2. Verify all mechanical connections before testing. 3. Select the S-Series model that matches the tool's operating torque range. 4. Operate the tool in the clockwise direction only. 5. After each run-down, completely back the adapter up (rotate counter-clockwise to its starting position) before performing the next test. 6. Review torque results using the connected torque analyzer. Following these steps helps provide consistent, repeatable torque testing while simulating a soft-joint fastening application. --- ### Applications **S-Series Run-Down Adapters are commonly used in:** - Manufacturing environments - Calibration laboratories - Quality control departments - Production testing stations - Tool verification programs --- ### Calibration & Quality Programs **S-Series adapters support:** - Torque verification - Calibration activities - Tool performance testing - Quality control initiatives - Measurement validation programs Using an S-Series adapter can help improve consistency and repeatability during testing activities. --- ### Integration & Advanced Features - Compatible with Mountz torque analyzers - Compatible with Mountz torque sensors - Supports simulated rundown testing - Suitable for calibration and verification activities - Designed for quality control and testing environments - Available in multiple capacities --- ### Media & Supporting Content  ![](https://www.mountztorque.com/core/media/media.nl?id=15916836&c=456127&h=3saUxIVFCGt-1UcFGsOvRXDzwghtdS_t5jFvS5sjUiyqb_PT&resizeid=7&resizeh=650&resizew=650) - 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