Two new press-in inserts for ABS and polycarbonates have been added to Spirol Industries' portfolio of fastener products. Capable of being installed either manually or automatically, the Series 50 (through-hole) and Series 51 (headed, through-hole) brass inserts have a helical knurl that ensures maximum migration of plastic to provide good pullout and torque resistance. A generous pilot ensures proper alignment and perpedicularity after insertion.