Thread Gauges
Thread Plug & Ring Gauges for Metric, UN, BSP, NPT, ACME, Trapezoidal, BS Conduit & More
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Our Product Range
A complete range of high-precision gauges for accurate thread and dimensional measurement.
Plain Plug & Ring Gauge
High precision plain plug and ring gauges for accurate dimensional control.
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Measuring Pins
Sub zero treated hardened and ground measuring pins, individual & in sets.
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About AKU Tools & Gauges
We are manufacturers of precision gauges and gauging solutions for industrial inspection and dimensional control. Our gauges are manufactured to international standards as well as customer specifications, ensuring accuracy, repeatability and long service life.
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Industry Applications
Our gauges are used across a wide range of industries worldwide.
Automotive
Components
Components
General
Engineering
Engineering
Aerospace
Pumps & Valves
Oil & Gas
Turned
Components
Components
Technical Resources
Useful information to help you select and use the right gauges for your application.
Thread Standards
Metric, Unified (UN), BSP, NPT, ACME and Trapezoidal thread information.
Learn More →GO / NO GO Gauging
Principles of limit gauging, fit classes and inspection methods.
Learn More →Gauge Selection Guide
Selecting the correct gauge for your application.
Learn More →Technical Downloads
Product catalogues, technical data and reference charts.
Learn More →What Our Customers Say
Trusted by leading companies across diverse industries.
TATA“Aku Tools has been our trusted partner for high precision thread gauges. Their quality and service are exceptional.”
Tata Motors
BOSCH“Consistent quality & delivery within agreed lead time. They are our preferred vendor.”
Bosch
LARSEN & TOUBRO“Their gauges are accurate, durable and meet our stringent quality standards. Their knowledge on various threads and applications is extremely helpful.”
Larsen & Toubro
“They have shortest manufacturing lead times, competitive pricing, ISO-compliant documentation, and high quality of metric, UN, ACME, and BSPP thread gauges.”
Conex Metals
alfanar“AKU demonstrates strong knowledge of thread forms, standards and gauge selection, supporting our varied inspection requirements.”
Mohsin KhanAlfanar Electrical Systems
FIERA S.R.L.“High precision gauges with excellent support. A dependable partner.”
Marco VaccaroneFiera S.R.L., Italy
“High quality gauges and responsive technical support.”
Mr. Amit GuptaGenus Power Infrastructures Ltd.
General Hydraulics“Reliable gauging products and professional service.”
Mr. QaziGeneral Hydraulics, Kuwait