Acme Thread Gauges

Screw threads come in a wide variety of shapes, sizes, and load-bearing capacities to suit many applications. It’s important to verify that the threaded components being specified and installed are within tolerance, so that they provide the necessary strength and stability.

Thread gauges are a specialized product for verifying screw tolerance. Gage Assembly is a leading manufacturer of precision thread gauges for a variety of thread types, including Acme thread components. Learn more about Acme threads and the advantages of using our Acme thread gauge products.

What Are Acme Threads?

Acme threads are a specific type of a thread configuration with a thread form and distinct profile features:

29° thread angle
Thread height that is half the pitch
Flat apex and valley

This thread profile was developed in 1894 as a stronger, more easily manufactured alternative to square screws. The wide base of the thread imparts additional strength for many load-bearing applications, such as leadscrews in lathes, vises, or linear actuators. Acme thread components are widely used in the automotive, aerospace, defense, energy, and oil and gas industries.

Benefits of Acme Thread Gauges

Thread gauges are a simple yet highly effective way for checking that a component screw thread is within tolerance. They are available in both plug configurations for checking internally threaded components and ring configurations for checking externally threaded components.

Choosing an Acme thread gauge from Gage Assembly offers several advantages, such as:

Increased Precision. Our thread gages are machined with CNC equipment and hand-lapped for high precision and accuracy.
Simplicity. Positive easy checking for threaded components by the Go/ Nogo method.
Improved Durability. Thread gauges are made from oil hardened graphitic tool steel, with inherent lubricant properties for reduced friction. The high carbon content contributes to long-lasting, hard wearing performance. Gages are heat- and cold-hardened for extra durability.
Broad industry application. Acme thread gauges are widely used in many industries including defense, automotive, medical, aerospace, and oil and gas. Gage Assembly can also customize Acme gauges for industry or application requirements.
Cost Effectiveness. Our high-quality gauges are made of durable materials that resist wear over time. This means they remain accurate and do not need to be replaced frequently.

Acme Thread Types

There are several types of Acme threads for different applications. Gage Assembly makes gauges for multiple Acme thread types, including:

General Purpose Acme Threads (2G, 3G, 4G Classes)

These durable threads are widely used across industries. They are available in a wide range of diameters and generally are not used to support radial loads.

Centralizing Acme Threads (ACME-C)

These are used in applications where threads have no radial support and the flat apex and valley areas meet the opposing threads before the flanks do during radial loading. These often require tight tolerances for optimal performance.

Stub Acme Threads

Stub threads have a thread height that is 0.3 of the pitch, rather than the standard 0.5 of the pitch. These may be used in applications that require high torque or where there are tight space restrictions.

Acme Thread Standards and Quality Assurance

Gage Assembly’s products comply with Acme thread standards to ensure the accuracy of our gauge products. Several standards apply to Acme thread components:

ANSI Standards. ANSI B1.5 for general purpose Acme threads, and ANSI B1.8 for stub Acme threads
Global Thread Standards. ISO, JIS, DIN, and British Standards
Quality Assurance. We use the finest tool steel available for superior quality and longer wear.

Acme Thread Pitch Gauges and More by Gage Assembly

For over 72 years, Gage Assembly has been one of the top manufacturers of reliable, accurate fixed limit thread gages, including gages for Acme threads. We supply both standard gage products and custom gages to meet our customers’ needs.