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TR Taps Spark Plug

Alpha HSS Pilot Nose STI Tap | Metric Fine Spark Plug M12.0 x 1.25mm

Product Code: STISPHI120125

Key Features
Purpose-made STI geometry: Cuts the oversized thread required for a wire thread insert
High-speed steel construction: Provides durable cutting performance
ISO 529 manufacture: Supports consistent tap quality and sizing
Pilot nose design: Suits the listed spark plug thread repair size
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Technical Specifications
Brand ALPHA
Diameter (mm) 12
Type of Measure MF
Material HSS
Pitch (mm) 1.25
Alpha HSS Pilot Nose STI Tap | Metric Fine Spark Plug M12.0 x 1.25mm is purpose-made for cutting the oversized internal thread required before fitting a matching wire thread insert. Manufactured from high-speed steel to ISO 529, the tap uses a pilot nose design for spark plug thread repairs. Precision STI thread geometry supports an accurate insert fit and reliable installation. Use it after preparing the damaged hole to the correct tapping drill size, with a suitable lubricant during cutting. This one-piece tap is matched to M12.0 x 1.25mm inserts and is intended for repair work on damaged or stripped internal threads.
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