Somta Series 531 1/4" BSF HSS Second Hand Tap AZ-7110 With a 29° thread angle

With a 29° thread angle and a pitch of 4 TPI

Constructed from high-strength materials

M4 - 35mm - 20 PCS

#6 (9/16-18) JIC plugs x 8 PCS

Application: Drilling through hardened steels

Somta Series 531 1/4" BSF HSS Second Hand Tap AZ-7110 With a 29° thread angleThe Somta Series 531 1 4" BSF Second Hand Tap is manufactured from premium High Speed Steel (HSS) and is designed for producing accurate British Standard Fine (BSF) internal threads. Manufactured to ISO 529 standards, this precision tool is ideal for general hand tapping operations, offering excellent cutting performance, durability, and long service life. The second tap is the intermediate tap used after the taper tap and before the bottoming tap,