Screw Plug Gauge

The Screw Plug Gauge is a precision Go / No-Go inspection gauge used for checking internal threads in components such as nuts, tapped holes, and threaded bores. It ensures accurate verification of thread size, pitch, and tolerance, helping maintain consistent thread quality during production.

Manufactured by P.S. & SONS from high-grade alloy steel, Screw Plug Gauges are hardened, stabilized, and precision ground to deliver excellent dimensional accuracy, wear resistance, and long service life. The clearly marked GO and NO GO ends allow fast pass/fail inspection without the need for measurement readings, making them ideal for shop-floor and quality control use.

These gauges help reduce thread-related defects, ensure proper mating of threaded parts, and improve overall production efficiency.

Key Features

• Go / No-Go type for internal thread inspection

• Accurate checking of thread size, pitch, and tolerance

• Hardened and precision-ground thread profiles

• Clear size and tolerance markings

• Suitable for continuous and high-volume inspection

Applications

• Automotive and engineering industries

• Fastener manufacturing units

• Machine shops and tool rooms

• Quality control and inspection departments

• Precision manufacturing units

P.S. & SONS manufactures Screw Plug Gauges in metric, inch, BSP, BSPT, NPT, ACME, and special thread forms, available in standard and customized specifications as per customer drawings and international standards, ensuring reliable inspection performance for both domestic and export markets.