B8 Thread Rolling Attachment Parts PN 200U551, Complete Attachment PN 8174050, Head Body PN 8179260A, #1 Solid Arm (incl. bearing) PN 8179270A, #2 Solid Arm (incl. bearing) PN 8199960A, #1 Geared Arm (incl. spacer & bearing) PN 8199970A, #2 Geared Arm (incl. spacer & bearing) PN 8168640, Arm Clamping Nut PN 81X8XX0, Roll Pin – carbide / bronze PN 8174450, Cover Plate PN 8168550, Matching Adj. Screw PN 8168560, Compensator Spring PN 8168540, Compensator Block PN 8172030, Drive Gear PN 8168520, Intermediate Gear PN 8168530, Gear Stud PN 8172040, Arm Pivot Shaft PN 8168510, Large Idler Gear PN 8168580, Idler Gear Bearing PN 8174030, #1 Chip Guard PN 8174040, #2 Chip Guard PN 8168520, Compensator Gear PN 8168520, Thrust Bearing (anti-friction) / (carbide)–optional PN 8180470, Spanner Wrench PN item-1561, Hex Wrenches (each) PN 8416030, Arm Adjusting Screw PN 9544670, Arm Locking Screw PN 8179230, Bronze Thrust Bushing PN 8199981, #1 Roll Gap Spacer — 1 notch PN 8199982, #2 Roll Gap Spacer — 2 notches PN 001U107, Micrometer Setting Gage PN 8197340, Max. Modified Solid Arm #1 PN 8197350, Max. Modified Solid Arm #2 PN item-1570, Thread Rolling Attach. Handbook PN item-1571, Adapters PN 8414800, Locking Screw