Left Hand Thread Ring Gauges are designed to inspect external left-hand screw threads used in components where reverse motion or rotation is required. These gauges ensure the thread dimensions, pitch, and angles conform to specifications.

Key Features:

• Specially designed for left-hand thread profiles

• Available in GO and NO-GO configurations

• Manufactured from hardened and stabilized tool steel

• Conforms to ISO, BS, and DIN standards

• Available for Metric, Unified, and BSP thread forms

Technical Details:

• Hardness: 58–62 HRC

• Thread range: M2 to M100

• Accuracy: ±0.002 mm

• Supplied with traceable calibration certificate

Applications:

• Automotive, hydraulic, and rotating machinery

• Reverse-motion threaded assemblies

• Aerospace and industrial fasteners

Benefits:Ensures left-hand threads are precisely machined, prevents fitting errors, and maintains consistent quality across production batches.