The OSG Threading Tap NPT A-Spiral Flute is a high-performance tapping tool engineered for precision National Pipe Taper (NPT) threads in blind-hole work. Designed for machinists and manufacturing shops, it pairs reliability with durability to deliver consistent, leak-tight threads in a variety of materials.

• Thread Type: NPT (National Pipe Taper) threads optimized for blind holes to ensure accurate, seal-ready taps
• A-Spiral Flute: Special spiral flute geometry enhances chip evacuation and reduces risk of clogging during deep blind-hole threading
• Material: Powder metal construction provides superior toughness, wear resistance, and durability under challenging cutting conditions
• Coating: TiCN coating delivers excellent heat resistance and lower friction for faster cutting and prolonged tool life
• Cutting Direction: Right-hand threads designed for standard machining setups and compatibility with common turning centers
• Size: 1 x 11.5, a precise specification suited for precise NPT threading in constrained blind-hole applications
• Standards: DIN 5156 compliant, aligning with established dimensional and performance expectations for pipe-tipe threads
• Application: Ideal for precision threading in a range of metals where blind-hole NPT threads are required, from fixture work to hydraulic components

This tap integrates advanced materials and coatings to optimize performance in demanding environments. The TiCN coating minimizes heat buildup and friction, allowing for smoother cuts and reduced tool wear, while the powder metal body resists deformation under high cutting loads. The A-Spiral flute design ensures steady chip removal, helping maintain thread quality and reduce the chance of rework in blind-hole projects. Whether upgrading a workshop toolkit or replacing worn taps, this OSG tap is built to deliver reliable, repeatable NPT threads with long tool life.