ISO/IEC 17025 Accredited Torque Calibration
Accurate torque measurement is essential for the safety, reliability, and quality of mechanical assemblies. Our national network of local calibration providers delivers the precision you rely on—supporting product integrity, preventing failures, and reducing costly liability risks.
Our Torque Calibration Services
Torque instruments play a critical role in aerospace, automotive, pipelines, precision manufacturing, and other industries where fastener and component reliability is vital.
When instruments drift out of specification, the consequences can be severe—fastener failures, compromised structural integrity, product recalls, safety hazards, and expensive liability claims. The Accredited Labs network offers comprehensive torque calibration services to keep your instruments performing within their required accuracy ranges.
Our Process
Torque calibration involves verifying and adjusting instruments that measure rotational force across defined measurement ranges. Each device is compared to certified reference torque standards with known, traceable values to identify deviations from intended performance.
Experienced technicians apply precisely controlled torque loads across the instrument’s full range, document all variations, and may make adjustments needed to restore accuracy. If an instrument cannot be restored to the required accuracy range, you receive detailed reporting with the data necessary for corrective action, maintenance planning, or replacement decisions.
All torque calibrations follow internationally recognized standards and industry specifications to promote consistency, reliability, and complete measurement traceability. Each instrument is returned with documentation linking its accuracy to national torque standards—supporting quality management systems, safety requirements, and assembly specifications.
Types of Torque Measuring Instruments We Calibrate
Our comprehensive torque calibration services cover the complete spectrum of torque measuring technologies used across industries:
- Torque Wrenches: Manual and pneumatic torque wrenches including click-type, beam-type, and dial-indicating wrenches used for precise fastener installation. Calibration ensures accurate torque application across the wrench's range and verifies proper operation of torque indication or limiting mechanisms.
- Digital Torque Meters: Electronic instruments that provide precise digital torque readings with data logging and analysis capabilities. These instruments require calibration of torque sensors, signal processing electronics, and display systems to ensure accurate measurements across their full range.
- Torque Transducers and Sensors: Industrial torque measurement devices used in automated assembly equipment, testing machines, and process monitoring applications. Calibration verifies sensor accuracy, signal output characteristics, and long-term stability under various operating conditions.
- Torque Multipliers: Mechanical devices that amplify input torque for high-torque applications such as large fasteners and heavy equipment assembly. Calibration ensures accurate torque multiplication ratios and verifies that output torque corresponds correctly to input torque and multiplication factors.
- Torque Screwdrivers: Precision tools used for small fasteners in electronics, medical devices, and precision assembly applications. These tools require calibration to ensure accurate torque application for delicate components and precision assembly requirements.
- Pneumatic and Electric Torque Tools: Powered torque application tools used in production assembly operations. Calibration verifies torque output accuracy, repeatability, and consistency across various operating conditions and tool settings.
- Torque Analyzers and Testers: Instruments used to measure and verify the torque output of other torque tools and equipment. These calibration standards require regular calibration themselves to maintain their accuracy as reference instruments.
- Impact Wrenches with Torque Control: High-speed assembly tools with torque limiting or measurement capabilities used in automotive, construction, and industrial assembly operations. Calibration ensures accurate torque control and consistent assembly quality.
- Rotary Torque Sensors: Continuous measurement devices used in rotating machinery, motor testing, and power transmission applications. Calibration verifies measurement accuracy under dynamic conditions and various rotational speeds.
- Manual Torque Measurement Devices: Including torque gauges, torque meters, and portable torque measurement instruments used for field verification and quality control applications.
Find Torque Calibration Services
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Accutek Lab
Accutek Lab has been providing reliable and cost-effective pipette calibration services across the United States since 1996.
Calibration ServicesPipette Calibration -
Aldinger
Since 1972, Aldinger has been providing top-quality calibration services for test and measurement equipment in Texas and beyond.
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Cal-Cert
Cal-Cert is committed to providing the highest level of calibrations and certification service to our customers.
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Cal-Labs
Cal-Labs has provided quality calibration in Southern California since 1977. We are A2LA accredited to ISO 17025.
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Calibration Services Inc.
Calibration Services, Inc. (CSI) is an on-site and in-house calibration firm specializing in calibration and service of mechanical testing devices.
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Cal Tec Process Management
The calibration specialists at CTPM have been providing precision calibration and quality assurance since 1987.
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Calser Calibrations
Since 1979, Calser Calibrations has delivered trusted, precision calibration services backed by a commitment to quality and reliability.
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CMG Sales, Inc.
CMG Sales, Inc. is a leading manufacturer sales representative and ISO 17025 accredited calibration laboratory providing services to manufacturers nationwide.
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Color Calibration Group
Color Calibration Group has been providing professional calibration services for all your color, light, and viscosity calibration needs for over 25 years.
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ETI Precision
ETI has been a leader in the calibration, repair, and sale of test and measurement equipment since 1994, and covers all 50 states.
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Holts Precision, Inc.
For over 60 years Holts Precision, Inc. has performed calibrations & repairs on all major brands of gaging equipment.
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Huston-DePue
Established in 1960, HDCL is staffed by experienced professionals who understand the critical role accurate measurement plays in quality control and regulatory compliance.
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Instrument Technologies, Inc.
For over three decades, Instrument Technologies, Inc. (ITI) has been a trusted partner for regulated industries seeking precision, compliance, and operational reliability.
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IPM, Inc.
Industrial Process Measurement, Inc. has been in the instrument supply, service and calibration business for over 30 years.
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J & J Calibration Service
J&J Calibration Service, an ISO-17025 accredited company, offers unmatched mobile calibration capabilities and laboratory calibration services.
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OCS Technologies
Founded in 1930, OCS Technologies is a trusted multi-discipline calibration service provider as well as leading product distributor.
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OnCal
With over 23 years of experience in pipette calibration in the Pacific Northwest, the OnCal Corporation guarantees seamless and dependable metrology services.
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Polymer Testing Instruments
Since 1996 Polymer Testing Instruments Inc. has provided high quality service and calibration of equipment for the rubber, plastics, and energy industries.
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Precision Calibration Systems
PCS is a full-service ISO 17025 Accredited calibration laboratory, founded with the goal of providing reliable and accurate instrument calibration service.
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Quality Control Services
Quality Control Services is an established, accredited calibration services and laboratory equipment company with over 40 years of experience.
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Quality Surveillance, Inc.
QSI has been providing Los Angeles, Ventura, Santa Barbara and Santa Clarita Counties with reliable and cost effective metrology services since 1992.
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Scale Service & Supply
From laboratory balances to truck scales, Scale Service & Supply has been providing precision calibration for weighing systems since 1987.
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Servo Innovations
Servo Innovations, founded in 2005, has earned industry-wide trust for its accredited calibration, repair, and technical services.
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Tescom Calibration Services
Tescom Calibration Services has provided sales, repair, and calibration of telecom test equipment since 1982.
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Trident Calibration Labs
Serving the greater Phoenix area, Trident Calibration Labs has more than 100 years of combined calibration experience.
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Tru Cal International
Serving as an asset to countless businesses in a variety of industries, Tru Cal International has specialized in test equipment calibration since 1992.
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Utah Scale Center
Utah Scale Center offers servicing and calibrating of industrial scales across the Rocky Mountain Region, with 70+ years of experience.
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Washington Calibration
Washington Calibration has been providing customers with quality gage repair services for all their inspection measuring instruments for more than 34 years.
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Audit-Ready Calibration in 3 Simple Steps
Submit Your Equipment List
Send us a list of the equipment you need calibrated, and we’ll provide a tailored quote with clear pricing—no hidden fees.
Schedule Your Calibration
Choose a convenient time for a mobile or on-site equipment calibration. Our certified technicians ensure precision and compliance with ISO/IEC 17025 standards.
Stay Compliant & Audit-Ready
Receive detailed calibration reports and certification, giving you peace of mind for audits and operational excellence.
Frequently Asked Questions
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What types of torque tools and instruments can be calibrated?
Torque calibration services cover a wide range of tools and instruments, including click-type and beam torque wrenches, electronic torque wrenches, torque screwdrivers, torque multipliers, torque analyzers, and rotary torque transducers. Both hand tools and automated assembly tools — including DC electric and pneumatic nutrunners — can typically be calibrated.
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How does torque calibration affect assembly quality and fastener reliability?
Proper torque application is essential to joint integrity — too little torque can result in loose fasteners that fail under load, while too much torque can stretch or shear fasteners or damage mating components. Calibrated torque tools ensure that fasteners are tightened to specification consistently, which is especially critical in applications where joint failure could have safety consequences, such as in automotive, aerospace, or structural assemblies.
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Is torque wrench calibration required for ISO 9001 or industry-specific quality certifications?
Yes, most quality management standards — including ISO 9001 — require that measurement and monitoring equipment be calibrated at defined intervals, and torque tools used in critical assembly processes fall under this requirement. Industry-specific standards such as AS9100 for aerospace and IATF 16949 for automotive impose similar or more stringent calibration requirements, often with additional traceability and documentation expectations.
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How often should torque wrenches and torque tools be calibrated?
Calibration frequency should be determined based on usage patterns, the criticality of the torque application, and the tool history of staying in tolerance. High-use tools in production environments typically require more frequent calibration than those used occasionally for maintenance. Industry guidelines and quality standards often recommend annual calibration as a baseline, with more frequent intervals for heavily used tools.
