1-32 UN [2A] - No-Go Ring Thread Gauge (JBO Johs Boss) - DAkkS Calibration Description

The 1-32 UN [2A] - No-Go Ring Thread Gauge (JBO Johs Boss) - DAkkS Calibration has the following features:

• 2A Tolerance Class
• Right Hand Hand
• 32 TPI Thread Pitch
• Imperial Metric or Imperial?
• 1-32 UN Thread Size
• No-Go Gauge Type
• JBO Johs Boss Brand/Series
• Yes - Enquire Suitable for UKAS Calibration
• Manufacturing Certification Certification Provided
• DAkkS Calibrated Provided Calibration

Discover more about the Imperial UN Ring Thread Gauges range.

Imperial UN (Unified National) Ring Thread Gauges are precision tools designed to verify the accuracy of external threads that conform to Unified Thread Standards (UTS). These gauges feature internal threads crafted to match specific Unified National profiles, including UNC (Unified Coarse), UNF (Unified Fine), and UNEF (Unified Extra Fine). They ensure screws, bolts, and other threaded components meet exact tolerances for compatibility and reliable performance in assemblies.

How Imperial UN Ring Thread Gauges Work

Imperial UN Ring Thread Gauges assess external threads by allowing the threaded component to engage with the gauge. A "Go" gauge checks that the external thread meets minimum size requirements by fitting smoothly. A "No-Go" gauge ensures that the thread does not exceed the maximum tolerance by failing to engage fully. This dual-check system is crucial for quality control in industries like aerospace, automotive and manufacturing, where thread accuracy is critical. For instance, these gauges can be used to inspect bolts in high-stress applications, ensuring they meet exact standards to prevent mechanical failure.

What Material Imperial UN Ring Thread Gauges are Made From

These gauges are typically made from hardened tool steel or high-grade alloy steel. Tool steel offers excellent durability, wear resistance and precision, even after repeated use. The hardened surface prevents deformation, ensuring the gauges maintain their accuracy over time. Protective finishes such as black oxide are often applied to enhance corrosion resistance, making the gauges suitable for use in industrial or workshop environments.

What Size and Type Imperial UN Ring Thread Gauges are Available

Imperial UN Ring Thread Gauges are available in a range of sizes corresponding to Unified National thread standards. They accommodate different thread profiles, including UNC for general applications, UNF for tighter fits, and UNEF for highly precise threads. Both "Go" and "No-Go" gauges are required for comprehensive inspection, ensuring external threads meet both minimum and maximum tolerance standards. Each gauge is meticulously manufactured to provide consistent and repeatable results.

FAQs

Q: What is the purpose of Imperial UN Ring Thread Gauges?

A: These gauges verify the accuracy of external threads, ensuring they meet Unified National standards for reliable and compatible assemblies.

Q: How do UNC, UNF and UNEF threads differ?

A: UNC threads are coarse and used for general applications requiring strength, UNF threads are finer for precise fits, and UNEF threads are extra fine for high-precision assemblies.

Q: How often should Imperial UN Ring Thread Gauges be calibrated?

A: Regular calibration is recommended to maintain accuracy, particularly when the gauges are used frequently or in critical applications.

Q: Can these gauges be used for existing threaded components?

A: Yes, they can verify the accuracy of both new and existing external threads to ensure compliance with Unified National standards.