The OSG Threading Tap Metric Fine A-Spiral Flute with FORM E geometry is engineered for precision blind-hole threading in compact assemblies. Designed for professionals who demand accurate, durable taps, it delivers clean threads on M4 x 0.35 metric fine pitches with reliable repeatability.

• Size and pitch: M4 x 0.35 metric fine thread designed for tight blind-hole applications
• Flute design: A-Spiral flute for efficient chip evacuation and smooth cutting in hard-to-reach holes
• Geometry: FORM E geometry optimized for high-precision threading and superior thread quality
• Material: Powder metal core offering enhanced wear resistance and durability under demanding use
• Coating: TiCN coating increases surface hardness and reduces friction for longer tool life
• Direction: Right-hand threading for standard machining setups
• Standards: DIN371-compliant configuration tailored for blind-hole tapping

This tap excels in demanding, high-speed tapping of blind holes, delivering consistent thread forms with reduced tool wear and fewer reworks. The TiCN-coated powder-metal construction stands up to repeated cycles in challenging materials, while the FORM E geometry and spiral flute collaborate to maintain tight tolerances and efficient chip removal. Ideal for precision housings, fixtures, and compact machinery, it helps you achieve reliable, repeatable results across production runs.