Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - BSW - 5/16 x 18 ISO Insert - VN Style 8 mm for reliable deep-hole

8 mm for reliable deep-hole drilling with controlled chip evacuation

helping you spot undersize or oversize threads at a glance and keep production moving

The 686 Series construction delivers consistent

repeatable cuts on narrow rib features with confidence and ease

TiN-tipped HSS‑E construction: A hard

Baer Heli Coil Tap - Wire Thread Insert - Bottoming Tap (STI) - BSW - 5/16 x 18 ISO Insert - VN Style 8 mm for reliable deep-holeBaer Heli Coil Tap is the precision tool you reach for when thread integrity matters. Designed specifically for creating strong, reusable threads with wire thread inserts, this bottoming tap (STI) tackles 5 16 x 18 BSW applications with confident efficiency. Built to withstand the demands of professional shop work, it delivers consistent, burr free threads that form a reliable foundation for helicoil reinforcements in a range of materials. Why this