GO and NO-GO Thread Ring Gauges are precision-engineered tools used to check the external threads of screws, bolts, and studs. They ensure that threaded components meet design specifications for pitch, diameter, and form, guaranteeing proper fit and performance in assembly.

Key Features:

• Supplied as a pair: GO gauge checks the minimum material condition, and NO-GO gauge verifies the maximum material limit

• Manufactured from high-grade, oil-hardened tool steel

• Precision ground and hand-lapped for exceptional accuracy

• Conforms to ISO 1502, BS 919, ANSI, and DIN standards

• Available in Metric, Unified, BSP, BSW, and customized thread forms

Technical Details:

• Hardness: 58–62 HRC

• Accuracy: ±0.002 mm

• Sizes available from M2 to M200 (or custom sizes)

• Supplied with NABL-traceable calibration certificate

Applications:

• Thread inspection of bolts, shafts, studs, and fasteners

• Automotive, aerospace, and general engineering industries

• Suitable for production and quality control departments

Benefits:Ensures precise thread fit, eliminates assembly errors, reduces rejection rates, and maintains consistent quality across large-scale manufacturing. These gauges offer long-lasting reliability and easy verification for both standard and custom thread profiles.