Sowant precision gage is a lead stub acme thread gauges manufacture in China

China made ASME B1.8 Stub Acme Thread Ring & Plug Gauges 

Introduction

The ASME B1.8 standard defines the specifications for Stub Acme threads, a variant of the Acme thread form with a shallower depth. These threads are commonly used in applications requiring high strength with limited wall thickness, such as in oilfield equipment, heavy machinery, and aerospace components.

To ensure proper thread fit and interchangeability, Stub Acme Thread Ring & Plug Gauges are essential for verification. These gauges comply with ASME B1.8 and are used to inspect both internal (plug gauges) and external (ring gauges) threads.

Key Features of ASME B1.8 Stub Acme Gauges

• Thread Angle: 29° (same as standard Acme threads)

• Reduced Thread Depth: Approximately 40% shallower than standard Acme threads

• Pitch Diameter Tolerance: Strictly controlled per ASME B1.8

• Material: Typically high-grade alloy steel, hardened & ground for durability

• Applications: Used in couplings, jacks, lead screws, and heavy-duty mechanical systems

30 Standard ASME B1.8 Stub Acme Thread Ring & Plug Gauge Sizes

Below is a list of 30 common Stub Acme thread gauge sizes as per ASME B1.8, covering major diameter (D), pitch (P), and threads per inch (TPI).

class:2G/3G/4G

Conclusion

ASME B1.8 Stub Acme Thread Gauges are critical for maintaining precision in industrial applications where shallow yet strong threads are required. The 30 standard sizes listed above cover a wide range of common requirements, ensuring compatibility with various machinery and equipment.

For custom Stub Acme thread gauges or specialized tolerances, manufacturers can produce gauges based on specific engineering drawings while adhering to ASME B1.8 guidelines.

Sowant Precision Gage co.,ltd can offer your the best Acme thread ring and thread plug gage to worldwide.